Antennas & wave Propagation ASSIGNMENT-I

Size: px
Start display at page:

Download "Antennas & wave Propagation ASSIGNMENT-I"

Transcription

1 Shri Vishnu Engineering College for Women :: Bhimavaram Department of Electronics & Communication Engineering Antennas & wave Propagation 1. Define the terms: i. Antenna Aperture ii. Beam Width iii. Aperture Efficiency iv. Bandwidth. ASSIGNMENT-I 2. a) Define the terms Radiation intensity, Gain, Resolution and Beam efficiency b) The field pattern of an antenna is given by i) Plot the normalized power pattern. ii) Estimate the main beam efficiency of the antenna. 3. As related to antennas, define and explain the following terms: i ) Radiation Resistance ii) Effective Area iii) Effective Length iv) Efficiency 4. Find the effective aperture of an isotropic antenna operating at a wavelength of 10-2 m, deriving its directivity. 5. An antenna has a field pattern given Find the following: i) HPBW ii) Beam Width between first nulls (FNBW) 6. Find the effective length of a λ/2 dipole and λ/4 monopole. Hence calculate their directivities, using the appropriate radiation resistances. 7. Establish the relations between directivity and effective area, directivity and effective length. 8. An antenna has a radiation resistance of 63 ohms and a lossy resistance of 6Ω. If the power gain is 30, calculate the directivity and the efficiency of the antenna

2 ASSIGNMENT-II 1. a) State the Reciprocity Theorem for antennas? Prove that the Self Impedance of an antenna in transmitting and receiving mode is same. b) Define directivity, obtain the directivity of an isotropic antenna, short dipole and Half-wave Dipole 2. a) Give the expression for electric field due to current element. Find the distance from a radiating element such that Radiation and Induction fields are equal with necessary assumptions. b) What is short magnetic Di-pole? How is it realized? 3. a) Define the terms electrostatic field, induction field, and radiation field of an antenna and bring out their significance. b) Sketch and compare radiation patterns of horizontal half wave dipole with those of vertical half wave dipole c) What are short antennas 4. Explain how loop aerial is used for direction finding? Derive the relevant expression for electric field intensity for loop aerial. 5. Derive an expression for radiation resistance of half wave length slot aerial using babinet s principle. Sketch the field pattern 6.. (a) Explain the terms Isotropic, Directional and Omni directional patterns. (b) Show that the radiation resistance of a λ/4 monopole is 36.5ohms. (c) Plot the radiation pattern of dipole antenna for 4 different dimensions in terms of wavelengths 7.. (a)what is radiation resistance of an antenna. (b)show that the radiation resistance of half wave dipole is 73ohm 8. Distinguish between Dipole and Monopole

3 ASSIGNMENT-III 1. What is Array Factor? Find the array factor of 2 element array. 2. For an array of 2 identical infinitesimal dipoles oriented with a separation of D and phase excitation difference β between the elements. Find the angles of observation where the nulls of the array occur. The magnitude of excitation of the elements is same 3. A linear broadside array consist of 4 identical equal in phase point source with λ/3 spacing. Calculate and plot the field pattern. Also find the directivityand beam width. 4. What is optimum spacing used in parasitic array? Why. 5. Compare the performance of Broadside and End fire array. 6. Show that the width of principle lobe of an end fine array is greater than that of broadside array of the same length. 7 (a) Compare the radiation characteristics of uniform linear arrays, fed with i. uniform amplitudes. ii. Triangular taper amplitudes. iii. Binomially tapered amplitudes. (b) Mention the advantages and disadvantages of Binomial array. 8. a) How a unidirectional pattern is obtained in an end fire array. Explain? b) What are the advantages and disadvantages of binomial array? ASSIGNMENT-IV 1. a) Sketch and explain the constructional features of Helical Antenna. b) Sketch and explain the basic set up for V-antenna and plot the pattern 2. a) Explain the need and the configuration of a Folded Dipole Antenna. Sketch its radiation pattern and compare its characteristics with those of simple λ/2 dipole. b) List out the design relations associated with a Rhombic Antenna. What are its applications? 3. a) List out the relations associated with a rhombic antenna. What are its applications? b) Discuss the merits and demerits of travelling wave antenna

4 4. (a) State the advantages and disadvantages of Rhombic Antenna. (b) Draw the radiation pattern for traveling wave antenna for L=_λ/2, λ, 2 λ, 4λ. 5. If a Helical antenna has spacing between turns 0.05m, diameter 0.1m, no. of turns equal to 20 and operates at 1000MHz. Find the null to null beam width of the main beam and also half power beam width and directivity. 6. Discuss the basic properties of Helical Antennas 7. Describe the construction and properties of Rhombic Antenna. 8. Describe the characteristics of long wire traveling wave antenna. Sketch their Pattern for lengths of i. λ/2 ii. 5λ iii. 20λ ASSIGNMENT-V 1. (a) What is a parabolic element. How does a parasitic element act when length is greater than and smaller than λ/2. (b) Distinguish between Spherical and Cylindrical paraboloids. Comment on their aperture efficiency and applications 2. a) Explain all the structural requirements of a 5 element yagi antenna at 475MHz accounting for typical spacing, length to diameter ratios and input impedance Zn. (b) Explain the geometry, requirements and properties of parabolic reflectors. 3 A paraboloids operating at 5GHz, has a radiation pattern with null to null beam width of Find the mouth diameter of the paraboloid, HPBW and power gain. 4. Draw the Yadi-Uda antenna and sketch its radiation, Write down the design equations of yagi-uda antenna. 5. (a) Describe the following reflectors : i. Truncated Paraboloids ii. Offset Paraboloids. (b) Find the gain, BWFN, HPBW of a paraboloids of 2m diameter operating at 5GHz when half wave dipole is used. 6. Derive an expression for the gain of a 90 0 corner reflector. 7. Explain the principle and working of Yagi Antenna

5 8. a) Design Yagi Uda antenna of six elements to provide a gain of 12dB if the operating frequency is 200MHz b) Explain with suitable sketches perpendicular mode of radiation in helical antenna. ASSIGNMENT-VI 1. What is the principle of equality of path length? How is it applicable to horn antenna? 2. Obtain an expression for the directivity of pyramidal horn in terms of its aperture Dimensions. 3 Briefly explain the impedance measurement of a horn antenna by using slotted Line Method. 4. (a)distinguish between sectoral, pyramidal and conical horns, with neat sketches. List out their utility and applications. b) With neat set up, explain the absolute method of measuring the gain of an antenna. 5 Describe the methods for measuring the below parameters for an antenna a) Gain b) Directivity with a neat block diagram [8+8] 6. a) What is Zoning? What are its advantages? b) Discuss the applications of Horn Antenna. Sketch the sectoral horns. 7. (a) Derive an expression for directivity of pyramidal horn in terms of aperture Dimensions (b) Explain the 3 antenna method of measurement of the gain of a horn antenna with necessary relations. 8. (a) Given that radiation pattern of an antenna are measured, explain how the directivity and power gain can be evaluated. (b) Distinguish between different types of lens antennas, explaining their curvature profiles. 9 (a) Explain why the beam widths in the two perpendicular planes of radiation of a square pyramidal horn will be different. Derive gain formula. (b) What is an antenna test range? What is minimum distance at which test should be taken for an antenna 5m in diameter and working at 6GHz? Derive the necessary expression.

6 ASSIGNMENT-VII 1. a) Explain the effects of D-layer in sky wave propagation. b) Distinguish between the terms MUF, LUHF and Optimum frequency. 2. a) Write short notes on i) Ionosphere abnormalities ii) Optimum working frequency and LUHF 3. Describe the fading of short wave broadcast signals 4. a) Write short notes on Ground wave propagation and effective of earth b) In case of ionosphere, explain D, E&F layers. 5. a) Explain the following: i) Ground Wave ii) Space Wave iii) Surface Wave b) Discuss the characteristics of ionospheric layer 6. (a) What is Virtual Height? Derive the expression for the same. (b) What is Skip Distance? Explain briefly 7. (a) Discus the salient features of Sky wave propagation (b) Bring out the various problems associated with this mode of propagation. How are these problems overcome? 8 (a) Show that MUF of ionized layer is given by fcp1+(d/2h)2 for flat earth. (b) Discuss the following: i. Ionospheric Storms. ii. Sudden Ionospheric Disturbances ASSIGNMENT-VIII 1 a) Establish the relations for the received field strength of LOS propagated wave at i) Small distance ii) Large distance b) Describe the salient features of multi hop propagation 2. a) What is LOS propagation? Under what conditions it can exist? b) Explain the formation of inversion layer in the troposphere in the phenomenon of duct propagation

7 3 a) Discuss Duct Propagation dwell on causes and effects. b) Explain the bending of signals due to earths curvature. How is it useful for propagation 4. A communication link is to be established between two stations using half wave-length antenna for maximum directive gain. Transmitter power is 1 KW, frequency of operation is 100 MHz and distance between transmitter and receiver is 100 Km. what is the maximum power received by receiver? Explain and derive the formulas used 5. (a) Describe the troposphere and explain how tropospheric ducts can be used for microwave propagation. (b) Derive the expression for space wave electric field produced by an antenna at a distance point, assuming a flat earth 6.(a) Space wave propagates between transmitting and receiving stations of heights h1 and h2 respectively. Derive the expression for field strength. (b) What are the different paths used for propagating radio waves from 300KHz and 300MHz 7. (a) Derive the field strength of tropo spheric wave (b) Give an account of effect of earths imperfections and roughness. 8. Discuss the effects of hills, building and other obstacles an space wave propagation

EC ANTENNA AND WAVE PROPAGATION

EC ANTENNA AND WAVE PROPAGATION EC6602 - ANTENNA AND WAVE PROPAGATION FUNDAMENTALS PART-B QUESTION BANK UNIT 1 1. Define the following parameters w.r.t antenna: i. Radiation resistance. ii. Beam area. iii. Radiation intensity. iv. Directivity.

More information

BHARATHIDASAN ENGINEERING COLLEGE NATTARAMPALLI Frequently Asked Questions (FAQ) Unit 1

BHARATHIDASAN ENGINEERING COLLEGE NATTARAMPALLI Frequently Asked Questions (FAQ) Unit 1 BHARATHIDASAN ENGINEERING COLLEGE NATTARAMPALLI 635854 Frequently Asked Questions (FAQ) Unit 1 Degree / Branch : B.E / ECE Sem / Year : 3 rd / 6 th Sub Name : Antennas & Wave Propagation Sub Code : EC6602

More information

S.R.M. Institute of Science & Technology Deemed University School of Electronics & Communication Engineering

S.R.M. Institute of Science & Technology Deemed University School of Electronics & Communication Engineering S.R.M. Institute of Science & Technology Deemed University School of Electronics & Communication Engineering Question Bank Subject Code : EC401 Subject Name : Antennas and Wave Propagation Year & Sem :

More information

INSTITUTE OF AERONAUTICAL ENGINEERING Dundigal, Hyderabad ELECTRONICS AND COMMUNIACTION ENGINEERING QUESTION BANK

INSTITUTE OF AERONAUTICAL ENGINEERING Dundigal, Hyderabad ELECTRONICS AND COMMUNIACTION ENGINEERING QUESTION BANK INSTITUTE OF AERONAUTICAL ENGINEERING Dundigal, Hyderabad - 500 04 ELECTRONICS AND COMMUNIACTION ENGINEERING QUESTION BANK Course Name : Antennas and Wave Propagation (AWP) Course Code : A50418 Class :

More information

KINGS COLLEGE OF ENGINEERING. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING Academic Year (Even Sem) QUESTION BANK (AUTT-R2008)

KINGS COLLEGE OF ENGINEERING. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING Academic Year (Even Sem) QUESTION BANK (AUTT-R2008) KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING Academic Year 2012-2013(Even Sem) QUESTION BANK (AUTT-R2008) SUBJECT CODE /NAME: EC 1352 / ANTENNEA AND WAVE PROPAGATION

More information

1. What are the applications of loop antenna? (May2011) 2. Define Pattern Multiplication (May2011)

1. What are the applications of loop antenna? (May2011) 2. Define Pattern Multiplication (May2011) UNIT-II WIRE ANTENNAS AND ANTENNA ARRAYS 1. What are the applications of loop antenna? (May2011) 2. Define Pattern Multiplication (May2011) 3. A uniform linear array contains 50 isotropic radiation with

More information

KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK

KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK KINGS COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING QUESTION BANK SUB.NAME : ANTENNAS & WAVE PROPAGATION SUB CODE : EC 1352 YEAR : III SEMESTER : VI UNIT I: ANTENNA FUNDAMENTALS

More information

DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING SUBJECT NAME:

DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING SUBJECT NAME: Chendu College of Engineering & Technology (Approved by AICTE, New Delhi and Affiliated to Anna University) Zamin Endathur, Madurantakam, Kancheepuram, District 603311. DEPARTMENT OF ELECTRONICS & COMMUNICATION

More information

VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur 603 203. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING QUESTION BANK SUBJECT : EC6602 ANTENNA AND WAVE PROPOGATION SEM / YEAR : VI / III

More information

ANTENNA THEORY. Analysis and Design. CONSTANTINE A. BALANIS Arizona State University. JOHN WILEY & SONS New York Chichester Brisbane Toronto Singapore

ANTENNA THEORY. Analysis and Design. CONSTANTINE A. BALANIS Arizona State University. JOHN WILEY & SONS New York Chichester Brisbane Toronto Singapore ANTENNA THEORY Analysis and Design CONSTANTINE A. BALANIS Arizona State University JOHN WILEY & SONS New York Chichester Brisbane Toronto Singapore Contents Preface xv Chapter 1 Antennas 1 1.1 Introduction

More information

DMI COLLEGE OF ENGINEERING, CHENNAI EC ANTENNAS AND WAVE PROPAGATION PART A (2 MARKS)

DMI COLLEGE OF ENGINEERING, CHENNAI EC ANTENNAS AND WAVE PROPAGATION PART A (2 MARKS) 1. Define an antenna. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING EC6602 - ANTENNAS AND WAVE PROPAGATION UNIT I : FUNDAMENTALS OF RADIATION PART A (2 MARKS) Antenna is a transition device or

More information

HHTEHHH THEORY ANALYSIS AND DESIGN. CONSTANTINE A. BALANIS Arizona State University

HHTEHHH THEORY ANALYSIS AND DESIGN. CONSTANTINE A. BALANIS Arizona State University HHTEHHH THEORY ANALYSIS AND DESIGN CONSTANTINE A. BALANIS Arizona State University JOHN WILEY & SONS, INC. New York Chichester Brisbane Toronto Singapore Contents Preface V CHAPTER 1 ANTENNAS 1.1 Introduction

More information

EEM.Ant. Antennas and Propagation

EEM.Ant. Antennas and Propagation EEM.ant/0304/08pg/Req: None 1/8 UNIVERSITY OF SURREY Department of Electronic Engineering MSc EXAMINATION EEM.Ant Antennas and Propagation Duration: 2 Hours Spring 2003/04 READ THESE INSTRUCTIONS Answer

More information

UNIT Write short notes on travelling wave antenna? Ans: Travelling Wave Antenna

UNIT Write short notes on travelling wave antenna? Ans:   Travelling Wave Antenna UNIT 4 1. Write short notes on travelling wave antenna? Travelling Wave Antenna Travelling wave or non-resonant or aperiodic antennas are those antennas in which there is no reflected wave i.e., standing

More information

Half-Wave Dipole. Radiation Resistance. Antenna Efficiency

Half-Wave Dipole. Radiation Resistance. Antenna Efficiency Antennas Simple Antennas Isotropic radiator is the simplest antenna mathematically Radiates all the power supplied to it, equally in all directions Theoretical only, can t be built Useful as a reference:

More information

MARIA COLLEGE OF ENGINEERING AND TECHNOLOGY, ATTOOR

MARIA COLLEGE OF ENGINEERING AND TECHNOLOGY, ATTOOR MARIA COLLEGE OF ENGINEERING AND TECHNOLOGY, ATTOOR DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING ANTENNAS AND WAVE PROPOGATION 2 MARKS QUESTIONS & ANSWERS 1. Define an antenna. Unit.1 Antenna

More information

Resonant Antennas: Wires and Patches

Resonant Antennas: Wires and Patches Resonant Antennas: Wires and Patches Dipole Antennas Antenna 48 Current distribution approximation Un-normalized pattern: and Antenna 49 Radiating power: For half-wave dipole and,, or at exact resonance.

More information

1. Explain the basic geometry and elements of Yagi-Uda antenna.

1. Explain the basic geometry and elements of Yagi-Uda antenna. Benha University Faculty of Engineering- Shoubra Electrical Engineering Department Fourth Year (Communications & Electronics) Final-Term Exam Date: Tuesday 10/5/2016 ECE 424: Lab (4) Duration : 2 Hrs Answer

More information

CHAPTER 5 THEORY AND TYPES OF ANTENNAS. 5.1 Introduction

CHAPTER 5 THEORY AND TYPES OF ANTENNAS. 5.1 Introduction CHAPTER 5 THEORY AND TYPES OF ANTENNAS 5.1 Introduction Antenna is an integral part of wireless communication systems, considered as an interface between transmission line and free space [16]. Antenna

More information

UNIT I RADIATION FROM WIRE ANTENNAS PART A

UNIT I RADIATION FROM WIRE ANTENNAS PART A 1.What is a Short Dipole? UNIT I RADIATION FROM WIRE ANTENNAS PART A A short dipole is one in which the field is oscillating because of the oscillating voltage and current. It is called so, because the

More information

ANTENNAS AND WAVE PROPAGATION OBJECTIVE QUESTIONS

ANTENNAS AND WAVE PROPAGATION OBJECTIVE QUESTIONS ANTENNAS AND WAVE PROPAGATION OBJECTIVE QUESTIONS UNIT I 1. An antenna is (a) (a) Inductive (b) Capacitive (c) resistive above its resonance frequency (d) none 2. The input impedance of a λ/2 Dipole antenna

More information

Traveling Wave Antennas

Traveling Wave Antennas Traveling Wave Antennas Antennas with open-ended wires where the current must go to zero (dipoles, monopoles, etc.) can be characterized as standing wave antennas or resonant antennas. The current on these

More information

PANDIAN SARASWATHI YADAV ENGINEERING COLLEGE. Department of Electronics and Communication Engineering FUNDAMENTALS OF RADIATION. Unit-I.

PANDIAN SARASWATHI YADAV ENGINEERING COLLEGE. Department of Electronics and Communication Engineering FUNDAMENTALS OF RADIATION. Unit-I. PANDIAN SARASWATHI YADAV ENGINEERING COLLEGE Department of Electronics and Communication Engineering Subject Code/Subject: EC6602 ANTENNA AND WAVE PROPAGATION Branch/Year/Semester: ECE / III / 06 Regulation

More information

CHAPTER 8 ANTENNAS 1

CHAPTER 8 ANTENNAS 1 CHAPTER 8 ANTENNAS 1 2 Antennas A good antenna works A bad antenna is a waste of time & money Antenna systems can be very inexpensive and simple They can also be very expensive 3 Antenna Considerations

More information

MICROWAVE ENGINEERING MCQs

MICROWAVE ENGINEERING MCQs MICROWAVE ENGINEERING MCQs 1) If an antenna draws 12 A current and radiates 4 kw, then what will be its radiation resistance? a. 22.22 ohm b. 27.77 ohm c. 33.33 ohm d. 39.77 ohm 2) Which mode of radiation

More information

ANTENNA THEORY ANALYSIS AND DESIGN

ANTENNA THEORY ANALYSIS AND DESIGN ANTENNA THEORY ANALYSIS AND DESIGN THIRD EDITION Constantine A. Balanis WILEY- INTERSCIENCE A JOHN WILEY & SONS. INC.. PUBLICATION ial iel pi ial ial ial IBl ial ial ial pi Sl Contents Preface Xlll 1 Antennas

More information

EMG4066:Antennas and Propagation Exp 1:ANTENNAS MMU:FOE. To study the radiation pattern characteristics of various types of antennas.

EMG4066:Antennas and Propagation Exp 1:ANTENNAS MMU:FOE. To study the radiation pattern characteristics of various types of antennas. OBJECTIVES To study the radiation pattern characteristics of various types of antennas. APPARATUS Microwave Source Rotating Antenna Platform Measurement Interface Transmitting Horn Antenna Dipole and Yagi

More information

Travelling Wave, Broadband, and Frequency Independent Antennas. EE-4382/ Antenna Engineering

Travelling Wave, Broadband, and Frequency Independent Antennas. EE-4382/ Antenna Engineering Travelling Wave, Broadband, and Frequency Independent Antennas EE-4382/5306 - Antenna Engineering Outline Traveling Wave Antennas Introduction Traveling Wave Antennas: Long Wire, V Antenna, Rhombic Antenna

More information

Antennas Prof. Girish Kumar Department of Electrical Engineering India Institute of Technology, Bombay. Module - 1 Lecture - 1 Antennas Introduction-I

Antennas Prof. Girish Kumar Department of Electrical Engineering India Institute of Technology, Bombay. Module - 1 Lecture - 1 Antennas Introduction-I Antennas Prof. Girish Kumar Department of Electrical Engineering India Institute of Technology, Bombay Module - 1 Lecture - 1 Antennas Introduction-I Hello everyone. Welcome to the exciting world of antennas.

More information

UNIT-3. Ans: Arrays of two point sources with equal amplitude and opposite phase:

UNIT-3. Ans: Arrays of two point sources with equal amplitude and opposite phase: `` UNIT-3 1. Derive the field components and draw the field pattern for two point source with spacing of λ/2 and fed with current of equal n magnitude but out of phase by 180 0? Ans: Arrays of two point

More information

SI TECHNICAL 2018 UNIT IV QUESTION BANK

SI TECHNICAL 2018 UNIT IV QUESTION BANK SI TECHNICAL 2018 UNIT IV QUESTION BANK 1. In what range of frequencies are most omnidirectional horizontally polarized antennas used? A. VHF, UHF B. VLF, LF C. SH, EHF D. MF, HF 2. If the current ratios

More information

Aperture Antennas. Reflectors, horns. High Gain Nearly real input impedance. Huygens Principle

Aperture Antennas. Reflectors, horns. High Gain Nearly real input impedance. Huygens Principle Antennas 97 Aperture Antennas Reflectors, horns. High Gain Nearly real input impedance Huygens Principle Each point of a wave front is a secondary source of spherical waves. 97 Antennas 98 Equivalence

More information

An Introduction to Antennas

An Introduction to Antennas May 11, 010 An Introduction to Antennas 1 Outline Antenna definition Main parameters of an antenna Types of antennas Antenna radiation (oynting vector) Radiation pattern Far-field distance, directivity,

More information

UNIT Derive the fundamental equation for free space propagation?

UNIT Derive the fundamental equation for free space propagation? UNIT 8 1. Derive the fundamental equation for free space propagation? Fundamental Equation for Free Space Propagation Consider the transmitter power (P t ) radiated uniformly in all the directions (isotropic),

More information

( ) 2 ( ) 3 ( ) + 1. cos! t " R / v p 1 ) H =! ˆ" I #l ' $ 2 ' 2 (18.20) * + ! ˆ& "I #l ' $ 2 ' , ( βr << 1. "l ' E! ˆR I 0"l ' cos& + ˆ& 0

( ) 2 ( ) 3 ( ) + 1. cos! t  R / v p 1 ) H =! ˆ I #l ' $ 2 ' 2 (18.20) * + ! ˆ& I #l ' $ 2 ' , ( βr << 1. l ' E! ˆR I 0l ' cos& + ˆ& 0 Summary Chapter 8. This last chapter treats the problem of antennas and radiation from antennas. We start with the elemental electric dipole and introduce the idea of retardation of potentials and fields

More information

Antennas 101 Don t Be a 0.97 db Weakling! Ward Silver NØAX

Antennas 101 Don t Be a 0.97 db Weakling! Ward Silver NØAX Antennas 101 Don t Be a 0.97 db Weakling! Ward Silver NØAX Overview Antennas 101 2 Overview Basic Antennas: Ground Plane / Dipole How Gain and Nulls are Formed How Phased Arrays Work How Yagis Work (simplified)

More information

The magnetic surface current density is defined in terms of the electric field at an aperture as follows: 2E n (6.1)

The magnetic surface current density is defined in terms of the electric field at an aperture as follows: 2E n (6.1) Chapter 6. Aperture antennas Antennas where radiation occurs from an open aperture are called aperture antennas. xamples include slot antennas, open-ended waveguides, rectangular and circular horn antennas,

More information

Antenna Fundamentals Basics antenna theory and concepts

Antenna Fundamentals Basics antenna theory and concepts Antenna Fundamentals Basics antenna theory and concepts M. Haridim Brno University of Technology, Brno February 2017 1 Topics What is antenna Antenna types Antenna parameters: radiation pattern, directivity,

More information

Wave Propagation and Antenna Engineering

Wave Propagation and Antenna Engineering Wave Propagation and Antenna Engineering Wave Propagation and Antenna Engineering SANJAY KUMAR Air Commodore (Retd.) Former AOC, 9 BRD, IAF Pune and Former Principal Adviser Defence Avionics Research

More information

Chapter 6 Antenna Basics. Dipoles, Ground-planes, and Wires Directional Antennas Feed Lines

Chapter 6 Antenna Basics. Dipoles, Ground-planes, and Wires Directional Antennas Feed Lines Chapter 6 Antenna Basics Dipoles, Ground-planes, and Wires Directional Antennas Feed Lines Some General Rules Bigger is better. (Most of the time) Higher is better. (Most of the time) Lower SWR is better.

More information

Antennas 1. Antennas

Antennas 1. Antennas Antennas Antennas 1! Grading policy. " Weekly Homework 40%. " Midterm Exam 30%. " Project 30%.! Office hour: 3:10 ~ 4:00 pm, Monday.! Textbook: Warren L. Stutzman and Gary A. Thiele, Antenna Theory and

More information

ANTENNAS AND WAVE PROPAGATION EC602

ANTENNAS AND WAVE PROPAGATION EC602 ANTENNAS AND WAVE PROPAGATION EC602 B.Tech Electronics & Communication Engineering, Semester VI INSTITUTE OF TECHNOLOGY NIRMA UNIVERSITY 1 Lesson Planning (L-3,P-2,C-4) Chapter No. Name Hours 1. Basic

More information

Characteristics of HF Coastal Radars

Characteristics of HF Coastal Radars Function Characteristics System 1 Maximum operational (measurement) range** Characteristics of HF Coastal Radars 5 MHz Long-range oceanographic 160-220 km average during (daytime)* System 2 System 3 System

More information

UNIT Explain the radiation from two-wire. Ans: Radiation from Two wire

UNIT Explain the radiation from two-wire. Ans:   Radiation from Two wire UNIT 1 1. Explain the radiation from two-wire. Radiation from Two wire Figure1.1.1 shows a voltage source connected two-wire transmission line which is further connected to an antenna. An electric field

More information

ANTENNAS FROM THEORY TO PRACTICE WILEY. Yi Huang University of Liverpool, UK. Kevin Boyle NXP Semiconductors, UK

ANTENNAS FROM THEORY TO PRACTICE WILEY. Yi Huang University of Liverpool, UK. Kevin Boyle NXP Semiconductors, UK ANTENNAS FROM THEORY TO PRACTICE Yi Huang University of Liverpool, UK Kevin Boyle NXP Semiconductors, UK WILEY A John Wiley and Sons, Ltd, Publication Contents Preface Acronyms and Constants xi xiii 1

More information

Rec. ITU-R F RECOMMENDATION ITU-R F *

Rec. ITU-R F RECOMMENDATION ITU-R F * Rec. ITU-R F.162-3 1 RECOMMENDATION ITU-R F.162-3 * Rec. ITU-R F.162-3 USE OF DIRECTIONAL TRANSMITTING ANTENNAS IN THE FIXED SERVICE OPERATING IN BANDS BELOW ABOUT 30 MHz (Question 150/9) (1953-1956-1966-1970-1992)

More information

Antenna Theory. Wire Antennas

Antenna Theory. Wire Antennas Antenna Theory Wire Antennas Monopole Antenna Long Wire or Traveling wave Antennas Yagi Uda Antenna Prof. D. Kannadassan Reference: C. A. Balanis, J.D. Krauss Monopole antenna Image theory, an intro A

More information

Loop and Slot Antennas

Loop and Slot Antennas Loop and Slot Antennas Prof. Girish Kumar Electrical Engineering Department, IIT Bombay gkumar@ee.iitb.ac.in (022) 2576 7436 Loop Antenna Loop antennas can have circular, rectangular, triangular or any

More information

RADIATION PATTERNS. The half-power (-3 db) beamwidth is a measure of the directivity of the antenna.

RADIATION PATTERNS. The half-power (-3 db) beamwidth is a measure of the directivity of the antenna. RADIATION PATTERNS The radiation pattern is a graphical depiction of the relative field strength transmitted from or received by the antenna. Antenna radiation patterns are taken at one frequency, one

More information

Antenna & Wave Propagation (Subject Code: 7EC1)

Antenna & Wave Propagation (Subject Code: 7EC1) COMPUCOM INSTITUTE OF TECHNOLOGY & MANAGEMENT, JAIPUR (DEPARTMENT OF ELECTRONICS & COMMUNICATION) Notes Antenna & Wave Propagation (Subject Code: 7EC1) Prepared By: Raj Kumar Jain Class: B. Tech. IV Year,

More information

Antennas Prof. Girish Kumar Department of Electrical Engineering Indian Institute of Technology, Bombay. Module 2 Lecture - 10 Dipole Antennas-III

Antennas Prof. Girish Kumar Department of Electrical Engineering Indian Institute of Technology, Bombay. Module 2 Lecture - 10 Dipole Antennas-III Antennas Prof. Girish Kumar Department of Electrical Engineering Indian Institute of Technology, Bombay Module 2 Lecture - 10 Dipole Antennas-III Hello, and welcome to todays lecture on Dipole Antenna.

More information

Satellite Sub-systems

Satellite Sub-systems Satellite Sub-systems Although the main purpose of communication satellites is to provide communication services, meaning that the communication sub-system is the most important sub-system of a communication

More information

Fundamentals of Antennas. Prof. Ely Levine

Fundamentals of Antennas. Prof. Ely Levine Fundamentals of Antennas Prof. Ely Levine levineel@zahav.net.il 1 Chapter 3 Wire Antennas 2 Types of Antennas 3 Isotropic Antenna Isotropic radiator is the simplest antenna mathematically Radiates all

More information

Chapter 4 The RF Link

Chapter 4 The RF Link Chapter 4 The RF Link The fundamental elements of the communications satellite Radio Frequency (RF) or free space link are introduced. Basic transmission parameters, such as Antenna gain, Beamwidth, Free-space

More information

Broadband Antenna. Broadband Antenna. Chapter 4

Broadband Antenna. Broadband Antenna. Chapter 4 1 Chapter 4 Learning Outcome At the end of this chapter student should able to: To design and evaluate various antenna to meet application requirements for Loops antenna Helix antenna Yagi Uda antenna

More information

Amateur Radio License. Propagation and Antennas

Amateur Radio License. Propagation and Antennas Amateur Radio License Propagation and Antennas Todays Topics Propagation Antennas Propagation Modes Ground wave Low HF and below, ground acts as waveguide Line-of-Sight (LOS) VHF and above, radio waves

More information

UNIT V PROPAGATION The three basic types of propagation: Sky Wave Propagation: Space Wave Propagation: Ground Wave Propagation: Propagation of Waves

UNIT V PROPAGATION The three basic types of propagation: Sky Wave Propagation: Space Wave Propagation: Ground Wave Propagation: Propagation of Waves UNIT V PROPAGATION The three basic types of propagation: Ground wave, space wave and sky wave propagation. Sky Wave Propagation: Structure of the ionosphere Effective dielectric constant of ionized region

More information

Chapter 15: Radio-Wave Propagation

Chapter 15: Radio-Wave Propagation Chapter 15: Radio-Wave Propagation MULTIPLE CHOICE 1. Radio waves were first predicted mathematically by: a. Armstrong c. Maxwell b. Hertz d. Marconi 2. Radio waves were first demonstrated experimentally

More information

# DEFINITIONS TERMS. 2) Electrical energy that has escaped into free space. Electromagnetic wave

# DEFINITIONS TERMS. 2) Electrical energy that has escaped into free space. Electromagnetic wave CHAPTER 14 ELECTROMAGNETIC WAVE PROPAGATION # DEFINITIONS TERMS 1) Propagation of electromagnetic waves often called radio-frequency (RF) propagation or simply radio propagation. Free-space 2) Electrical

More information

Q.P. Code : [ TURN OVER]

Q.P. Code : [ TURN OVER] Q.P. Code : 587801 8ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC70 6308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703193679392A86308ADF85B2CAF8DDC703

More information

OBJECTIVES: PROPAGATION INTRO RADIO WAVES POLARIZATION LINE OF SIGHT, GROUND WAVE, SKY WAVE IONOSPHERE REGIONS PROPAGATION, HOPS, SKIPS ZONES THE

OBJECTIVES: PROPAGATION INTRO RADIO WAVES POLARIZATION LINE OF SIGHT, GROUND WAVE, SKY WAVE IONOSPHERE REGIONS PROPAGATION, HOPS, SKIPS ZONES THE WAVE PROPAGATION OBJECTIVES: PROPAGATION INTRO RADIO WAVES POLARIZATION LINE OF SIGHT, GROUND WAVE, SKY WAVE IONOSPHERE REGIONS PROPAGATION, HOPS, SKIPS ZONES THE IONOSPHERIC LAYERS ABSORPTION AND FADING

More information

Propagation curves and conditions of validity (homogeneous paths)

Propagation curves and conditions of validity (homogeneous paths) Rec. ITU-R P.368-7 1 RECOMMENDATION ITU-R P.368-7 * GROUND-WAVE PROPAGATION CURVES FOR FREQUENCIES BETWEEN 10 khz AND 30 MHz (1951-1959-1963-1970-1974-1978-1982-1986-1990-1992) Rec. 368-7 The ITU Radiocommunication

More information

Dr. John S. Seybold. November 9, IEEE Melbourne COM/SP AP/MTT Chapters

Dr. John S. Seybold. November 9, IEEE Melbourne COM/SP AP/MTT Chapters Antennas Dr. John S. Seybold November 9, 004 IEEE Melbourne COM/SP AP/MTT Chapters Introduction The antenna is the air interface of a communication system An antenna is an electrical conductor or system

More information

Practical Antennas and. Tuesday, March 4, 14

Practical Antennas and. Tuesday, March 4, 14 Practical Antennas and Transmission Lines Goals Antennas are the interface between guided waves (from a cable) and unguided waves (in space). To understand the various properties of antennas, so as to

More information

CONTENTS. Note Concerning the Numbering of Equations, Figures, and References; Notation, xxi. A Bridge from Mathematics to Engineering in Antenna

CONTENTS. Note Concerning the Numbering of Equations, Figures, and References; Notation, xxi. A Bridge from Mathematics to Engineering in Antenna CONTENTS Note Concerning the Numbering of Equations, Figures, and References; Notation, xxi Introduction: Theory, 1 A Bridge from Mathematics to Engineering in Antenna Isolated Antennas 1. Free Oscillations,

More information

Antenna Theory and Design

Antenna Theory and Design Antenna Theory and Design SECOND EDITION Warren L. Stutzman Gary A. Thiele WILEY Contents Chapter 1 Antenna Fundamentals and Definitions 1 1.1 Introduction 1 1.2 How Antennas Radiate 4 1.3 Overview of

More information

Notes 21 Introduction to Antennas

Notes 21 Introduction to Antennas ECE 3317 Applied Electromagnetic Waves Prof. David R. Jackson Fall 018 Notes 1 Introduction to Antennas 1 Introduction to Antennas Antennas An antenna is a device that is used to transmit and/or receive

More information

CHAPTER 5 PRINTED FLARED DIPOLE ANTENNA

CHAPTER 5 PRINTED FLARED DIPOLE ANTENNA CHAPTER 5 PRINTED FLARED DIPOLE ANTENNA 5.1 INTRODUCTION This chapter deals with the design of L-band printed dipole antenna (operating frequency of 1060 MHz). A study is carried out to obtain 40 % impedance

More information

Antennas and Propagation. Chapter 5

Antennas and Propagation. Chapter 5 Antennas and Propagation Chapter 5 Introduction An antenna is an electrical conductor or system of conductors Transmission - radiates electromagnetic energy into space Reception - collects electromagnetic

More information

Note: For. interested in. Radiation. A field pattern. H and a phase

Note: For. interested in. Radiation. A field pattern. H and a phase Lecture-3 Antenna parameters: (Continued ) 1.4.3 Radiated Power With this information, now we are in a position to calculate the total radiated power from an antenna. Mathematically it can be written as

More information

Monopole Antennas. Prof. Girish Kumar Electrical Engineering Department, IIT Bombay. (022)

Monopole Antennas. Prof. Girish Kumar Electrical Engineering Department, IIT Bombay. (022) Monopole Antennas Prof. Girish Kumar Electrical Engineering Department, IIT Bombay gkumar@ee.iitb.ac.in (022) 2576 7436 Monopole Antenna on Infinite Ground Plane Quarter-wavelength monopole Antenna on

More information

Antennas and Propagation. Chapter 5

Antennas and Propagation. Chapter 5 Antennas and Propagation Chapter 5 Introduction An antenna is an electrical conductor or system of conductors Transmission - radiates electromagnetic energy into space Reception - collects electromagnetic

More information

UNIVERSITI MALAYSIA PERLIS

UNIVERSITI MALAYSIA PERLIS UNIVERSITI MALAYSIA PERLIS SCHOOL OF COMPUTER & COMMUNICATIONS ENGINEERING EKT 341 LABORATORY MODULE LAB 2 Antenna Characteristic 1 Measurement of Radiation Pattern, Gain, VSWR, input impedance and reflection

More information

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING EC6602 ANTENNA AND WAVE PROPAGATION YEAR : III SEMESTER : VI SUBJECT: ANTENNAS AND WAVE PROPAGATION SEMESTER:VI UNIT I TWO MARK QUESTIONS 1. Define

More information

The Basics of Patch Antennas, Updated

The Basics of Patch Antennas, Updated The Basics of Patch Antennas, Updated By D. Orban and G.J.K. Moernaut, Orban Microwave Products www.orbanmicrowave.com Introduction This article introduces the basic concepts of patch antennas. We use

More information

7.3.1 Objectives and Relevance Prerequisites. i. JNTU Suggested Books Experts Details Findings and Developments

7.3.1 Objectives and Relevance Prerequisites. i. JNTU Suggested Books Experts Details Findings and Developments 7.3 ANTENNAS AND WAVE PROPAGATION 7.3.1 Objectives and Relevance 7.3.2 Scope 7.3.3 Prerequisites 7.3.4 Syllabus i. JNTU ii. iii. GATE IES 7.3.5 Suggested Books 7.3.6 Websites 7.3.7 Experts Details 7.3.8

More information

Antennas and Propagation Chapters T4, G7, G8 Antenna Fundamentals, More Antenna Types, Feed lines and Measurements, Propagation

Antennas and Propagation Chapters T4, G7, G8 Antenna Fundamentals, More Antenna Types, Feed lines and Measurements, Propagation Antennas and Propagation Chapters T4, G7, G8 Antenna Fundamentals, More Antenna Types, Feed lines and Measurements, Propagation =============================================================== Antenna Fundamentals

More information

It is clear in Figures a and b that in some very specific directions there are zeros, or nulls, in the pattern indicating no radiation.

It is clear in Figures a and b that in some very specific directions there are zeros, or nulls, in the pattern indicating no radiation. Unit 2 - Point Sources and Arrays Radiation pattern: The radiation pattern of antenna is a representation (pictorial or mathematical) of the distribution of the power out-flowing (radiated) from the antenna

More information

ANTENNAS. I will mostly be talking about transmission. Keep in mind though, whatever is said about transmission is true of reception.

ANTENNAS. I will mostly be talking about transmission. Keep in mind though, whatever is said about transmission is true of reception. Reading 37 Ron Bertrand VK2DQ http://www.radioelectronicschool.com ANTENNAS The purpose of an antenna is to receive and/or transmit electromagnetic radiation. When the antenna is not connected directly

More information

UNIVERSITY OF UTAH ELECTRICAL AND COMPUTER ENGINEERING DEPARTMENT. ECE 5324/6324 ANTENNA THEORY AND DESIGN Spring 2013

UNIVERSITY OF UTAH ELECTRICAL AND COMPUTER ENGINEERING DEPARTMENT. ECE 5324/6324 ANTENNA THEORY AND DESIGN Spring 2013 UNIVERSITY OF UTAH ELECTRICAL AND COMPUTER ENGINEERING DEPARTMENT ECE 5324/6324 ANTENNA THEORY AND DESIGN Spring 2013 Instructor: O. P. Gandhi Office: MEB 4508 1. This is an engineering course which deals

More information

4/29/2012. General Class Element 3 Course Presentation. Ant Antennas as. Subelement G9. 4 Exam Questions, 4 Groups

4/29/2012. General Class Element 3 Course Presentation. Ant Antennas as. Subelement G9. 4 Exam Questions, 4 Groups General Class Element 3 Course Presentation ti ELEMENT 3 SUB ELEMENTS General Licensing Class Subelement G9 Antennas and Feedlines 4 Exam Questions, 4 Groups G1 Commission s Rules G2 Operating Procedures

More information

Newsletter 2.3. Antenna Magus version 2.3 released! New antennas in Version 2.3. Potter horn. Circularly polarised rectangular-biquad antenna

Newsletter 2.3. Antenna Magus version 2.3 released! New antennas in Version 2.3. Potter horn. Circularly polarised rectangular-biquad antenna Newsletter 2.3 October 2010 Antenna Magus version 2.3 released! An update to Antenna Magus, version 2.3, is now available for download. This update features 10 new antennas, as opposed to the usual 6.

More information

Chapter 1 - Antennas

Chapter 1 - Antennas EE 483/583/L Antennas for Wireless Communications 1 / 8 1.1 Introduction Chapter 1 - Antennas Definition - That part of a transmitting or receiving system that is designed to radiate or to receive electromagnetic

More information

FCC Technician License Course

FCC Technician License Course FCC Technician License Course 2014-2018 FCC Element 2 Technician Class Question Pool Presented by: Tamiami Amateur Radio Club (TARC) WELCOME To the third of 4, 3-hour classes presented by TARC to prepare

More information

Antennas and Propagation

Antennas and Propagation CMPE 477 Wireless and Mobile Networks Lecture 3: Antennas and Propagation Antennas Propagation Modes Line of Sight Transmission Fading in the Mobile Environment Introduction An antenna is an electrical

More information

Yagi-Uda (Beam) Antenna

Yagi-Uda (Beam) Antenna Yagi-Uda (Beam) Antenna Gary A. Thiele KD8ZWS (Ex W8RBW) Co-author of Antenna Theory & Design John Wiley & Sons, 1981, 1998, 2013 Yagi-Uda (Beam) Antennas Outline Preliminary Remarks Part I Brief history

More information

Final Examination. 22 April 2013, 9:30 12:00. Examiner: Prof. Sean V. Hum. All non-programmable electronic calculators are allowed.

Final Examination. 22 April 2013, 9:30 12:00. Examiner: Prof. Sean V. Hum. All non-programmable electronic calculators are allowed. UNIVERSITY OF TORONTO FACULTY OF APPLIED SCIENCE AND ENGINEERING The Edward S. Rogers Sr. Department of Electrical and Computer Engineering ECE 422H1S RADIO AND MICROWAVE WIRELESS SYSTEMS Final Examination

More information

Continuous Arrays Page 1. Continuous Arrays. 1 One-dimensional Continuous Arrays. Figure 1: Continuous array N 1 AF = I m e jkz cos θ (1) m=0

Continuous Arrays Page 1. Continuous Arrays. 1 One-dimensional Continuous Arrays. Figure 1: Continuous array N 1 AF = I m e jkz cos θ (1) m=0 Continuous Arrays Page 1 Continuous Arrays 1 One-dimensional Continuous Arrays Consider the 2-element array we studied earlier where each element is driven by the same signal (a uniform excited array),

More information

HIGH GAIN KOCH FRACTAL DIPOLE YAGI-UDA ANTENNA FOR S AND X BAND APPLICATION

HIGH GAIN KOCH FRACTAL DIPOLE YAGI-UDA ANTENNA FOR S AND X BAND APPLICATION HIGH GAIN KOCH FRACTAL DIPOLE YAGI-UDA ANTENNA FOR S AND X BAND APPLICATION Rajeev Kumar 1, R Radhakrishnan 2 1,2 Department of Theoretical Physics, University of Madras, (India) ABSTRACT In this study,

More information

Antennas and Propagation

Antennas and Propagation Mobile Networks Module D-1 Antennas and Propagation 1. Introduction 2. Propagation modes 3. Line-of-sight transmission 4. Fading Slides adapted from Stallings, Wireless Communications & Networks, Second

More information

American International Journal of Research in Science, Technology, Engineering & Mathematics

American International Journal of Research in Science, Technology, Engineering & Mathematics American International Journal of Research in Science, Technology, Engineering & Mathematics Available online at http://www.iasir.net ISSN (Print): 2328-3491, ISSN (Online): 2328-3580, ISSN (CD-ROM): 2328-3629

More information

RVRUSA - DATA DE REFERENCIA PARA INGENIEROS

RVRUSA - DATA DE REFERENCIA PARA INGENIEROS Useful formulae Electrical formulae Electrical power in KW: DC power [KW]: YROW DPSHUH YROW DPSHUH AC power (single phase) [KW]: AC power (three-phase) [KW]: where: cos( j ) YROW DPSHUH 73. cos( j) Volt:

More information

KULLIYYAH OF ENGINEERING

KULLIYYAH OF ENGINEERING KULLIYYAH OF ENGINEERING DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING ANTENNA AND WAVE PROPAGATION LABORATORY (ECE 4103) EXPERIMENT NO 3 RADIATION PATTERN AND GAIN CHARACTERISTICS OF THE DISH (PARABOLIC)

More information

DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING TWO MARK QUESTION WITH ANSWER

DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING TWO MARK QUESTION WITH ANSWER Chendu College of Engineering & Technology (Approved by AICTE, New Delhi and Affiliated to Anna University) Zamin Endathur, Madurantakam, Kancheepuram, District 603311. DEPARTMENT OF ELECTRONICS & COMMUNICATION

More information

A LABORATORY COURSE ON ANTENNA MEASUREMENT

A LABORATORY COURSE ON ANTENNA MEASUREMENT A LABORATORY COURSE ON ANTENNA MEASUREMENT Samuel Parker Raytheon Systems Company, 2000 East Imperial Highway RE/R02/V509, El Segundo, CA 90245 Dean Arakaki Electrical Engineering Department, California

More information

"Natural" Antennas. Mr. Robert Marcus, PE, NCE Dr. Bruce C. Gabrielson, NCE. Security Engineering Services, Inc. PO Box 550 Chesapeake Beach, MD 20732

Natural Antennas. Mr. Robert Marcus, PE, NCE Dr. Bruce C. Gabrielson, NCE. Security Engineering Services, Inc. PO Box 550 Chesapeake Beach, MD 20732 Published and presented: AFCEA TEMPEST Training Course, Burke, VA, 1992 Introduction "Natural" Antennas Mr. Robert Marcus, PE, NCE Dr. Bruce C. Gabrielson, NCE Security Engineering Services, Inc. PO Box

More information

Antennas and Propagation. Chapter 4: Antenna Types

Antennas and Propagation. Chapter 4: Antenna Types Antennas and Propagation : Antenna Types 4.4 Aperture Antennas High microwave frequencies Thin wires and dielectrics cause loss Coaxial lines: may have 10dB per meter Waveguides often used instead Aperture

More information

RECOMMENDATION ITU-R F *

RECOMMENDATION ITU-R F * Rec. ITU-R F.699-6 1 RECOMMENATION ITU-R F.699-6 * Reference radiation patterns for fixed wireless system antennas for use in coordination studies and interference assessment in the frequency range from

More information

Antenna Theory EELE 5445

Antenna Theory EELE 5445 Antenna Theory EELE 5445 Lecture 6: Dipole Antenna Dr. Mohamed Ouda Electrical Engineering Department Islamic University of Gaza 2013 The dipole and the monopole The dipole and the monopole are arguably

More information

Antenna Fundamentals. Microwave Engineering EE 172. Dr. Ray Kwok

Antenna Fundamentals. Microwave Engineering EE 172. Dr. Ray Kwok Antenna Fundamentals Microwave Engineering EE 172 Dr. Ray Kwok Reference Antenna Theory and Design Warran Stutzman, Gary Thiele, Wiley & Sons (1981) Microstrip Antennas Bahl & Bhartia, Artech House (1980)

More information