EE12: Laboratory Project (Part-2) AM Transmitter
|
|
- Phoebe Parsons
- 6 years ago
- Views:
Transcription
1 EE12: Laboratory Project (Part-2) AM Transmitter ECE Department, Tufts University Spring Objective This laboratory exercise is the second part of the EE12 project of building an AM transmitter in medium-wave band (550kHz-1700kHz). This part of the project involves in using the LC based oscillator (Colpitt Oscillator) already designed and design an Amplitude Modulator using voice-band signal from the line-out port of the PC to transmit voice. Vdd= 9V R 1 L 1 500µH C Vdd 10µF R E1 Q 1 2N K C 1 v rf C T 6-60pF C B 1nF R 2 R E2 470Ω C 2 Figure 1: Circuit Diagram of the Modified Colpitt Oscillator 1
2 2 The Modified Colpitt Oscillator The circuit shown in Figure-1 is the modified Colpitt oscillator. The only modification being the emitter resistor R E. It s divided into two resistors R E1 and R E2 and the LC tank is fed at the voltage divider instead of the emitter directly. The purpose is to give an extra degree of freedom to adjust the g m of the feedback by changing the ratio of R E1 to R E2. By adjusting the g m we can get an oscillation with reduced distortion. Also, it provides an low-impedance output to the next stage ie. the Amplitude Modulator. Parts List The parts remain same as the previous Laboratory exercise except for the following: L 1 = 500µH using two 1mH in parallel. The purpose of having R E1 is to vary it to the point where you get the oscillator to just get into oscillation and this will ensure an oscillation with less distortion. For PSpice you can use R E1 1.5kΩ and you should get it to oscillate. 2
3 R L Vdd Antenna C ant Q 1 v osc v audio I audio C E Figure 2: Architecture of Amplitude Modulator 3 Amplitude Modulator Architecture Figure-2 shows the architecture of the proposed Amplitude Modulator based on a simple multiplier circuit. The oscillator signal (v osc ) is fed to the base of Q 1 which is configured as an common-emitter amplifier with C E chosen such that it is very low-impedance at the oscillation frequency. The bias is provided by the current source I audio which is modulated by the input signal from the PC. Since the gain is directly proportional to the bias current, the amplitude is modulated with the input signal (v audio ). Finally, the antenna, which has an inherent inductance associated with it, is made to resonate with C ant so it carries only the RF signal and rest of the frequencies are filtered out. Circuit Design Figure-3 shows the reference design for the Amplitude Modulator. v osc is the signal from the Colpitt oscillator in Figure-1. C c1, R 6, R 1, R 2, Q 1 and C E for the common-emitter amplifier for the carrier signal (v osc ). C c2, R 7, C 2, R 3, R 4, Q 2 and R E form the modulator of the bias current for the RF amplifier. The collector current of Q 1 will not only contain the carrier signal with it s modulated sidebands, but also the baseband signal (ie. audio signal). 3
4 Vdd=9V C Vdd 10µF R 1 R 5 C 1 L 1 500µH L ant 400µΗ v c1 C ant v osc From the oscillator C C1 R 6 R 2 v b1 Q 1 2N3704 Vdd v e1 R 3 400Ω v in C C2 R 7 v b2 Q 2 2N3704 C E 2V PK R 4 R E v e2 C 2 Model of the PC lineout Figure 3: Reference Circuit for the Amplitude Modulator L 1, C 1, R 5 form the band-pass filter to filter out everything but the signal to be transmitted. With everything filtered out but the AM signal, L ant, C ant is made to resonate at the carrier frequency such that all the AM signal goes through L ant. Since the AM band frequency is so low that in order to have a resonating dipole antenna we need a very long wire (about 100m of wire), we instead use a ferrite core inductor which has a small radiating resistance. The audio signal is going to be provided from the line-out port of the PC which can be modeled as an Thevnin source with max 2V peak and a source resistance of 400Ω as shown in Figure-3. 4
5 Guidelines for Calculating Component values Choose R 1 and R 2 such that v b1 5V and the source impedance for the Thevnin equivalent is 10kΩ. Choose R 3 and R 4 such that v b2 2.8V and the source impedance for the Thevnin equivalent is 10kΩ. Choose R E such that the DC emitter current of Q 2 is approximately 1mA. Choose C 2 such that it forms a low-pass filter from v in to v b2 and choose the worst-case cut-off frequency to greater than 20KHz. Choose C E such that the magnitude of the AC impedance of C E is 3 10Ω at 500kHz. R 6 and R 7 can be chosen to be 100kΩ potentiometers. C c1 forms the high-pass filter to isolate the DC from the oscillator. Choose an appropriate value of C c1 such that the low-frequency 3dB point is well below 500KHz for example 100 KHz. Similarly choose a value for C c2 such that the low-frequency 3dB point less than 10Hz. R 5, C1, L 1 forms a band-pass filter. Choose C 1 for ω o = 750KHz and R 5 such that the bandwidth is approximately 300KHz. Hint: See Lecture-21 notes for relation between Q and bandwidth of a parallel R-L-C network. Choose C ant such that the series L ant, C ant resonate at ω o = 750KHz. Add a variable capacitor in parallel when building the circuit to tune it to the exact frequency. Guidelines for PSpice Simulation After you get the oscillation, choose R 6 such that the oscillation amplitude at the base of Q1 is small enough that it s in the small-signal domain. Provide a single tone of 5 khz at the input as your voice signal. When you provide the input signal, you can check if the modulating signal is too big or small by monitoring the collector current of Q 1. 5
6 Since the collector current will contain large portion of the input signal, it will be hard to see the amplitude modulation in time-domain. So, do a FFT on the I C1 and you should see two sidebands related to the input signal. Monitor the voltage at collector of Q 1 to make sure the signal amplitude is small enough not to distort your signal. Monitor the current in L ant. It should contain a healthy amplitude modulated signal and again you can use FFT to measure that. 6
EXPERIMENT #2 CARRIER OSCILLATOR
EXPERIMENT #2 CARRIER OSCILLATOR INTRODUCTION: The oscillator is usually the first stage of any transmitter. Its job is to create a radio-frequency carrier that can be amplified and modulated before being
More informationEE301 ELECTRONIC CIRCUITS CHAPTER 2 : OSCILLATORS. Lecturer : Engr. Muhammad Muizz Bin Mohd Nawawi
EE301 ELECTRONIC CIRCUITS CHAPTER 2 : OSCILLATORS Lecturer : Engr. Muhammad Muizz Bin Mohd Nawawi 2.1 INTRODUCTION An electronic circuit which is designed to generate a periodic waveform continuously at
More informationENEE 307 Electronic Circuit Design Laboratory Spring 2012
ENEE 307 Electronic Circuit Design Laboratory Spring 2012 Agis A. Iliadis Electrical Engineering Department University of Maryland College Park MD 20742 Wireless Communications-Transmitters 4.1. Wireless
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Graphical construction of transfer functions 8.3. Graphical construction of impedances and transfer
More informationSIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR (AUTONOMOUS) Siddharth Nagar, Narayanavanam Road QUESTION BANK
SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR (AUTONOMOUS) Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK Subject with Code : Electronic Circuit Analysis (16EC407) Year & Sem: II-B.Tech & II-Sem
More informationExercise 1: RF Stage, Mixer, and IF Filter
SSB Reception Analog Communications Exercise 1: RF Stage, Mixer, and IF Filter EXERCISE OBJECTIVE DISCUSSION On the circuit board, you will set up the SSB transmitter to transmit a 1000 khz SSB signal
More informationPhysics Class 12 th NCERT Solutions
Chapter.7 Alternating Current Class XII Subject Physics 7.1. A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply. a) What is the rms value of current in the circuit? b) What is the net power consumed
More informationThe Hartley Oscillator
The Hartley Oscillator One of the main disadvantages of the basic LC Oscillator circuit we looked at in the previous tutorial is that they have no means of controlling the amplitude of the oscillations
More informationUNIT 1 MULTI STAGE AMPLIFIES
UNIT 1 MULTI STAGE AMPLIFIES 1. a) Derive the equation for the overall voltage gain of a multistage amplifier in terms of the individual voltage gains. b) what are the multi-stage amplifiers? 2. Describe
More informationEE133 - Prelab 3 The Low-Noise Amplifier
Prelab 3 - EE33 - Prof. Dutton - Winter 2004 EE33 - Prelab 3 The Low-Noise Amplifier Transmitter Receiver Audio Amp XO BNC to ANT BNC to ANT XO CO (LM566) Mixer (SA602) Power Amp LNA Mixer (SA602) IF Amp
More informationThe Design of 2.4GHz Bipolar Oscillator by Using the Method of Negative Resistance Cheng Sin Hang Tony Sept. 14, 2001
The Design of 2.4GHz Bipolar Oscillator by Using the Method of Negative Resistance Cheng Sin Hang Tony Sept. 14, 2001 Introduction In this application note, the design on a 2.4GHz bipolar oscillator by
More informationLow frequency tuned amplifier. and oscillator using simulated. inductor*
CHAPTER 5 Low frequency tuned amplifier and oscillator using simulated inductor* * Partial contents of this Chapter has been published in. D.Susan, S.Jayalalitha, Low frequency amplifier and oscillator
More informationPART 20 IF_IN LO_V CC 10 TANK 11 TANK 13 LO_GND I_IN 5 Q_IN 6 Q_IN 7 Q_IN 18 V CC
19-0455; Rev 1; 9/98 EALUATION KIT AAILABLE 3, Ultra-Low-Power Quadrature General Description The combines a quadrature modulator and quadrature demodulator with a supporting oscillator and divide-by-8
More informationFigure 1: Closed Loop System
SIGNAL GENERATORS 3. Introduction Signal sources have a variety of applications including checking stage gain, frequency response, and alignment in receivers and in a wide range of other electronics equipment.
More informationCode: 9A Answer any FIVE questions All questions carry equal marks *****
II B. Tech II Semester (R09) Regular & Supplementary Examinations, April/May 2012 ELECTRONIC CIRCUIT ANALYSIS (Common to EIE, E. Con. E & ECE) Time: 3 hours Max Marks: 70 Answer any FIVE questions All
More informationVALLIAMMAI ENGINEERING COLLEGE
VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur 603 203. DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING SUBJECT QUESTION BANK : EC6401 ELECTRONICS CIRCUITS-II SEM / YEAR: IV / II year B.E.
More informationTopic Advanced Radio Receivers. Explain that an RF amplifier can be used to improve sensitivity;
Learning Objectives: At the end of this topic you will be able to; Explain that an RF amplifier can be used to improve sensitivity; Explain that a superheterodyne receiver offers improved selectivity and
More information14 MHz Single Side Band Receiver
EPFL - LEG Laboratoires à options 8 ème semestre MHz Single Side Band Receiver. Objectives. The objective of this work is to calculate and adjust the key elements of an Upper Side Band Receiver in the
More informationTDA7000 for narrowband FM reception
TDA7 for narrowband FM reception Author: Author: W.V. Dooremolen INTRODUCTION Today s cordless telephone sets make use of duplex communication with carrier frequencies of about.7mhz and 49MHz. In the base
More informationExperiment No. 9 DESIGN AND CHARACTERISTICS OF COMMON BASE AND COMMON COLLECTOR AMPLIFIERS
Experiment No. 9 DESIGN AND CHARACTERISTICS OF COMMON BASE AND COMMON COLLECTOR AMPLIFIERS 1. Objective: The objective of this experiment is to explore the basic applications of the bipolar junction transistor
More informationE4332: VLSI Design Laboratory. Columbia University Spring 2005: Lectures
E4332: VLSI Design Laboratory Nagendra Krishnapura Columbia University Spring 2005: Lectures nkrishna@vitesse.com 1 AM radio receiver AM radio signals: Audio signals on a carrier Intercept the signal Amplify
More informationChapter.8: Oscillators
Chapter.8: Oscillators Objectives: To understand The basic operation of an Oscillator the working of low frequency oscillators RC phase shift oscillator Wien bridge Oscillator the working of tuned oscillator
More informationPartIIILectures. Multistage Amplifiers
University of missan Electronic II, Second year 2015-2016 PartIIILectures Assistant Lecture: 1 Multistage and Compound Amplifiers Basic Definitions: 1- Gain of Multistage Amplifier: Fig.(1-1) A general
More informationEC202- ELECTRONIC CIRCUITS II Unit- I -FEEEDBACK AMPLIFIER
EC202- ELECTRONIC CIRCUITS II Unit- I -FEEEDBACK AMPLIFIER 1. What is feedback? What are the types of feedback? 2. Define positive feedback. What are its merits and demerits? 3. Define negative feedback.
More informationEECS 216 Winter 2008 Lab 3: AM Radio Part II: In-Lab & Post-lab Assignment
EECS 216 Winter 2008 Lab 3: Part II: In-Lab & Post-lab Assignment c Kim Winick 2008 1 Introduction In this laboratory you will assemble and test a working superheterodyne AM radio consisting of a front-end
More informationMiniproject: AM Radio
Objective UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Department of Electrical Engineering and Computer Sciences EE05 Lab Experiments Miniproject: AM Radio Until now, the labs have focused
More informationProject 6: Oscillator Circuits
: Oscillator Circuits Ariel Moss The purpose of this experiment was to design two oscillator circuits: a Wien-Bridge oscillator at 3 khz oscillation and a Hartley Oscillator using a BJT at 5 khz oscillation.
More informationUnderstanding VCO Concepts
Understanding VCO Concepts OSCILLATOR FUNDAMENTALS An oscillator circuit can be modeled as shown in Figure 1 as the combination of an amplifier with gain A (jω) and a feedback network β (jω), having frequency-dependent
More informationEE 318 Electronic Design Lab. Hi-fi Audio Transmitter from first principles
EE 318 Electronic Design Lab Hi-fi Audio Transmitter from first principles Supervised by Prof. Jayanta Mukherjee Prof. Dipankar Prof. L. Subramaniam By Group-9 Vipul Chaudhary (08d07039) Vineet Raj (08d07040)
More informationLABORATORY #3 QUARTZ CRYSTAL OSCILLATOR DESIGN
LABORATORY #3 QUARTZ CRYSTAL OSCILLATOR DESIGN OBJECTIVES 1. To design and DC bias the JFET transistor oscillator for a 9.545 MHz sinusoidal signal. 2. To simulate JFET transistor oscillator using MicroCap
More informationLBI-30398N. MAINTENANCE MANUAL MHz PHASE LOCK LOOP EXCITER 19D423249G1 & G2 DESCRIPTION TABLE OF CONTENTS. Page. DESCRIPTION...
MAINTENANCE MANUAL 138-174 MHz PHASE LOCK LOOP EXCITER 19D423249G1 & G2 LBI-30398N TABLE OF CONTENTS DESCRIPTION...Front Cover CIRCUIT ANALYSIS... 1 MODIFICATION INSTRUCTIONS... 4 PARTS LIST AND PRODUCTION
More informationCOMM 704: Communication Systems
COMM 704: Communication Lecture 1: Introduction Dr. Mohamed Abd El Ghany, Mohamed.abdel-ghany@guc.edu.eg Course Objective Give an introduction to the basic concepts of electronic communication systems
More informationUNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering
UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering EXPERIMENT 8 AMPLITUDE MODULATION AND DEMODULATION OBJECTIVES The focus of this lab is to familiarize the student
More informationERICSSONZ LBI-30398P. MAINTENANCE MANUAL MHz PHASE LOCKED LOOP EXCITER 19D423249G1 & G2 DESCRIPTION TABLE OF CONTENTS
MAINTENANCE MANUAL 138-174 MHz PHASE LOCKED LOOP EXCITER 19D423249G1 & G2 TABLE OF CONTENTS Page DESCRIPTION... Front Cover CIRCUIT ANALYSIS...1 MODIFICATION INSTRUCTIONS...4 PARTS LIST...5 PRODUCTION
More informationGOVERNMENT OF KARNATAKA KARNATAKA STATE PRE-UNIVERSITY EDUCATION EXAMINATION BOARD II YEAR PUC EXAMINATION MARCH-2012 SCHEME OF VALUATION
GOVERNMENT OF KARNATAKA KARNATAKA STATE PRE-UNIVERSITY EDUCATION EXAMINATION BOARD II YEAR PUC EXAMINATION MARCH-0 SCHEME OF VALUATION Subject Code: 0 Subject: Qn. PART - A 0. Which is the largest of three
More informationExperiment No. 2 Pre-Lab Signal Mixing and Amplitude Modulation
Experiment No. 2 Pre-Lab Signal Mixing and Amplitude Modulation Read the information presented in this pre-lab and answer the questions given. Submit the answers to your lab instructor before the experimental
More informationExperiment 8 Frequency Response
Experiment 8 Frequency Response W.T. Yeung, R.A. Cortina, and R.T. Howe UC Berkeley EE 105 Spring 2005 1.0 Objective This lab will introduce the student to frequency response of circuits. The student will
More informationOscillators. An oscillator may be described as a source of alternating voltage. It is different than amplifier.
Oscillators An oscillator may be described as a source of alternating voltage. It is different than amplifier. An amplifier delivers an output signal whose waveform corresponds to the input signal but
More informationITT Technical Institute. ET275 Electronic Communications Systems I Onsite Course SYLLABUS
ITT Technical Institute ET275 Electronic Communications Systems I Onsite Course SYLLABUS Credit hours: 4 Contact/Instructional hours: 50 (30 Theory Hours, 20 Lab Hours) Prerequisite(s) and/or Corequisite(s):
More informationChapter 6: Power Amplifiers
Chapter 6: Power Amplifiers Contents Class A Class B Class C Power Amplifiers Class A, B and C amplifiers are used in transmitters Tuned with a band width wide enough to pass all information sidebands
More informationEE 332 Design Project
EE 332 Design Project Variable Gain Audio Amplifier TA: Pohan Yang Students in the team: George Jenkins Mohamed Logman Dale Jackson Ben Alsin Instructor s Comments: Lab Grade: Introduction The goal of
More informationHF Amateur SSB Receiver
HF Amateur SSB Receiver PCB Set for radio club project http://rhelectronics.net PCB for DIY HF Amateur SSB Receiver 20M The receiver is a simple syperheterodyne type with quartz crystal filter. The circuit
More informationOPERATIONAL AMPLIFIER PREPARED BY, PROF. CHIRAG H. RAVAL ASSISTANT PROFESSOR NIRMA UNIVRSITY
OPERATIONAL AMPLIFIER PREPARED BY, PROF. CHIRAG H. RAVAL ASSISTANT PROFESSOR NIRMA UNIVRSITY INTRODUCTION Op-Amp means Operational Amplifier. Operational stands for mathematical operation like addition,
More informationChapter 6. FM Circuits
Chapter 6 FM Circuits Topics Covered 6-1: Frequency Modulators 6-2: Frequency Demodulators Objectives You should be able to: Explain the operation of an FM modulators and demodulators. Compare and contrast;
More informationQUICK START GUIDE FOR DEMONSTRATION CIRCUIT 678A 40MHZ TO 900MHZ DIRECT CONVERSION QUADRATURE DEMODULATOR
DESCRIPTION QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 678A LT5517 Demonstration circuit 678A is a 40MHz to 900MHz Direct Conversion Quadrature Demodulator featuring the LT5517. The LT 5517 is a direct
More informationPackage and Pin Assignment SSOP-6 (0.64mm pitch) OSCIN OSCOUT TXEN 3 VSS 4 TXOUT 5 VSS 6 7 MODIN 8 HiMARK SW DO RES RESB VREFP VSS Symbol
Low Power ASK Transmitter IC HiMARK Technology, Inc. reserves the right to change the product described in this datasheet. All information contained in this datasheet is subject to change without prior
More informationUNIVERSITY OF PENNSYLVANIA EE 206
UNIVERSITY OF PENNSYLVANIA EE 206 TRANSISTOR BIASING CIRCUITS Introduction: One of the most critical considerations in the design of transistor amplifier stages is the ability of the circuit to maintain
More informationLow-voltage mixer FM IF system
DESCRIPTION The is a low-voltage monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator
More informationAN-1098 APPLICATION NOTE
APPLICATION NOTE One Technology Way P.O. Box 9106 Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 www.analog.com Methodology for Narrow-Band Interface Design Between High Performance
More informationFeedback and Oscillator Circuits
Chapter 14 Chapter 14 Feedback and Oscillator Circuits Feedback Concepts The effects of negative feedback on an amplifier: Disadvantage Lower gain Advantages Higher input impedance More stable gain Improved
More informationKeywords: ISM, RF, transmitter, short-range, RFIC, switching power amplifier, ETSI
Maxim > Design Support > Technical Documents > Application Notes > Wireless and RF > APP 4929 Keywords: ISM, RF, transmitter, short-range, RFIC, switching power amplifier, ETSI APPLICATION NOTE 4929 Adapting
More informationCommunication Systems. Department of Electronics and Electrical Engineering
COMM 704: Communication Lecture 6: Oscillators (Continued) Dr Mohamed Abd El Ghany Dr. Mohamed Abd El Ghany, Mohamed.abdel-ghany@guc.edu.eg Course Outline Introduction Multipliers Filters Oscillators Power
More informationGOVERNMENT OF KARNATAKA KARNATAKA STATE PRE-UNIVERSITY EDUCATION EXAMINATION BOARD II YEAR PUC EXAMINATION MARCH-2013 SCHEME OF VALUATION
GOVERNMENT OF KARNATAKA KARNATAKA STATE PRE-UNIVERSITY EDUCATION EXAMINATION BOARD II YEAR PUC EXAMINATION MARCH-03 SCHEME OF VALUATION Subject Code: 0 Subject: PART - A 0. What does the arrow mark indicate
More informationEVALUATION KIT AVAILABLE 10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs. Typical Operating Circuit. 10nH 1000pF MAX2620 BIAS SUPPLY
19-1248; Rev 1; 5/98 EVALUATION KIT AVAILABLE 10MHz to 1050MHz Integrated General Description The combines a low-noise oscillator with two output buffers in a low-cost, plastic surface-mount, ultra-small
More informationECE 3274 Common-Emitter Amplifier Project
ECE 3274 Common-Emitter Amplifier Project 1. Objective The objective of this lab is to design and build three variations of the common- emitter amplifier. 2. Components Qty Device 1 2N2222 BJT Transistor
More informationTheory: The idea of this oscillator comes from the idea of positive feedback, which is described by Figure 6.1. Figure 6.1: Positive Feedback
Name1 Name2 12/2/10 ESE 319 Lab 6: Colpitts Oscillator Introduction: This lab introduced the concept of feedback in combination with bipolar junction transistors. The goal of this lab was to first create
More informationDesigning Information Devices and Systems II Fall 2018 Elad Alon and Miki Lustig Homework 4
EECS 16B Designing Information Devices and Systems II Fall 2018 Elad Alon and Miki Lustig Homework 4 This homework is solely for your own practice. However, everything on it is in scope for midterm 1,
More informationType Ordering Code Package TDA Q67000-A5168 P-DIP-18-5
Video Modulator for FM-Audio TDA 5666-5 Preliminary Data Bipolar IC Features FM-audio modulator Sync level clamping of video input signal Controlling of peak white value Continuous adjustment of modulation
More informationHomework Assignment 01
Homework Assignment 01 In this homework set students review some basic circuit analysis techniques, as well as review how to analyze ideal op-amp circuits. Numerical answers must be supplied using engineering
More informationET275P Electronic Communications Systems I [Onsite]
ET275P Electronic Communications Systems I [Onsite] Course Description: In this course, several methods of signal transmission and reception are covered, including such techniques as mixing, modulating
More informationList of Figures. Sr. no.
List of Figures Sr. no. Topic No. Topic 1 1.3.1 Angle Modulation Graphs 11 2 2.1 Resistor 13 3 3.1 Block Diagram of The FM Transmitter 15 4 4.2 Basic Diagram of FM Transmitter 17 5 4.3 Circuit Diagram
More informationRadio Frequency Electronics
Radio Frequency Electronics Frederick Emmons Terman Transformers Masters degree from Stanford and Ph.D. from MIT Later a professor at Stanford His students include William Hewlett and David Packard Wrote
More informationLow voltage high performance mixer FM IF system
DESCRIPTION The is a low voltage high performance monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal
More informationTuned circuits. Introduction - Tuned Circuits
Tuned circuits Introduction - Tuned Circuits Many communication applications use tuned circuits. These circuits are assembled from passive components (that is, they require no power supply) in such a way
More informationBHARATHIDASAN ENGINEERING COLLEGE
BHARATHIDASAN ENGINEERING COLLEGE DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING EC6401 - ELECTRONIC CIRCUITS - II QUESTION BANK II- YEAR IV SEM ACDEMIC YEAR: 2016-2017 EVEN SEMESTER EC6401 ELECTRONIC
More informationBaşkent University Department of Electrical and Electronics Engineering EEM 214 Electronics I Experiment 9
Başkent University Department of Electrical and Electronics Engineering EEM 214 Electronics I Experiment 9 COMMON-COLLECTOR (EMITTER FOLLOWER) AMPLIFIER Aim: 1. To measure the open-circuit voltage gain,
More informationAmplitude Modulation Methods and Circuits
Amplitude Modulation Methods and Circuits By: Mark Porubsky Milwaukee Area Technical College Electronic Technology Electronic Communications Milwaukee, WI Purpose: The various parts of this lab unit will
More informationFor the purpose of this problem sheet use the model given in the lecture notes.
Analogue Electronics Questions Todd Huffman & Tony Weidberg, MT 2018 (updated 30/10/18). For the purpose of this problem sheet use the model given in the lecture notes. The current gain is defined by a
More informationUniversity of North Carolina, Charlotte Department of Electrical and Computer Engineering ECGR 3157 EE Design II Fall 2009
University of North Carolina, Charlotte Department of Electrical and Computer Engineering ECGR 3157 EE Design II Fall 2009 Lab 1 Power Amplifier Circuits Issued August 25, 2009 Due: September 11, 2009
More informationPiezoelectric Discriminators
Introduction Piezoelectric Discriminators Ceramic discriminators are designed to be used in quadrature detection circuits to remove a FM carrier wave. These circuits receive a FM signal, like in a FM radio,
More informationTuned Radio Frequency Receiver (TRF) The most elementary receiver design, consisting of RF amplifier stages, detector and audio amplifier stages.
Figure 3-1 Simple radio receiver block diagram. Tuned Radio Frequency Receiver (TRF) The most elementary receiver design, consisting of RF amplifier stages, detector and audio amplifier stages. Jeffrey
More informationUNIVERSITY OF UTAH ELECTRICAL ENGINEERING DEPARTMENT
UNIVERSITY OF UTAH ELECTRICAL ENGINEERING DEPARTMENT ECE 3110 LAB EXPERIMENT NO. 4 CLASS AB POWER OUTPUT STAGE Objective: In this laboratory exercise you will build and characterize a class AB power output
More informationLab 4 : Transistor Oscillators
Objective: Lab 4 : Transistor Oscillators In this lab, you will learn how to design and implement a colpitts oscillator. In part II you will implement a RC phase shift oscillator Hardware Required : Pre
More informationLecture 9 RF Amplifier Design. Johan Wernehag, EIT. Johan Wernehag Electrical and Information Technology
Lecture 9 RF Amplifier Design Johan Wernehag Electrical and Information Technology Lecture 9 Oscillators Oscillators Based on Feedback Requirements for Self-Oscillation Output Power and Harmonic Distortion
More information1. What is the unit of electromotive force? (a) volt (b) ampere (c) watt (d) ohm. 2. The resonant frequency of a tuned (LRC) circuit is given by
Department of Examinations, Sri Lanka EXAMINATION FOR THE AMATEUR RADIO OPERATORS CERTIFICATE OF PROFICIENCY ISSUED BY THE DIRECTOR GENERAL OF TELECOMMUNICATIONS, SRI LANKA 2004 (NOVICE CLASS) Basic Electricity,
More informationMassachusetts Institute of Technology MIT
Massachusetts Institute of Technology MIT Real Time Wireless Electrocardiogram (ECG) Monitoring System Introductory Analog Electronics Laboratory Guilherme K. Kolotelo, Rogers G. Reichert Cambridge, MA
More informationClass XII Chapter 7 Alternating Current Physics
Question 7.1: A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply. (a) What is the rms value of current in the circuit? (b) What is the net power consumed over a full cycle? Resistance of the resistor,
More informationMGM 3000X Q67000-A5179 P-DSO-20-1 (SMD) MGM 3000X Q67006-A5179 P-DSO-20-1 Tape & Reel (SMD)
Video Modulator for FM/AM-Audio MGM 3000X Bipolar IC Features FM- and AM-audio modulator Audio carrier output for suppression of harmonics Sync level clamping of video input signal Controlling of peak
More informationDouble-balanced mixer and oscillator
NE/SA DESCRIPTION The NE/SA is a low-power VHF monolithic double-balanced mixer with input amplifier, on-board oscillator, and voltage regulator. It is intended for high performance, low power communication
More information10MHz to 1050MHz Integrated RF Oscillator with Buffered Outputs
9-24; Rev 2; 2/02 EVALUATION KIT AVAILABLE 0MHz to 050MHz Integrated General Description The combines a low-noise oscillator with two output buffers in a low-cost, plastic surface-mount, ultra-small µmax
More informationLecture 16 Date: Frequency Response (Contd.)
Lecture 16 Date: 03.10.2017 Frequency Response (Contd.) Bode Plot (contd.) Bode Plot (contd.) Bode Plot (contd.) not every transfer function has all seven factors. To sketch the Bode plots for a generic
More informationLM1868 AM FM Radio System
LM1868 AM FM Radio System General Description The combination of the LM1868 and an FM tuner will provide all the necessary functions for a 0 5 watt AM FM radio Included in the LM 1868 are the audio power
More information433MHz front-end with the SA601 or SA620
433MHz front-end with the SA60 or SA620 AN9502 Author: Rob Bouwer ABSTRACT Although designed for GHz, the SA60 and SA620 can also be used in the 433MHz ISM band. The SA60 performs amplification of the
More informationEE-4022 Experiment 2 Amplitude Modulation (AM)
EE-4022 MILWAUKEE SCHOOL OF ENGINEERING 2015 Page 2-1 Student objectives: EE-4022 Experiment 2 Amplitude Modulation (AM) In this experiment the student will use laboratory modules to implement operations
More informationANALOG ELECTRONIC CIRCUITS LABORATORY MANUAL (CODE: EEE - 228)
ANALOG ELECTRONIC CIRCUITS LABORATORY MANUAL (CODE: EEE - 228) DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING ANIL NEERUKONDA INSTITUTE OF TECHNOLOGY & SCIENCES (Affiliated to AU, Approved by AICTE
More informationApplication Note SAW-Components
Application Note SAW-Components Comparison between negative impedance oscillator (Colpitz oscillator) and feedback oscillator (Pierce structure) App.: Note #13 Author: Alexander Glas EPCOS AG Updated:
More informationMAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI
MAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI-621213. QUESTION BANK DEPARTMENT: EEE SUBJECT CODE: EE2203 SEMESTER : III SUBJECT NAME: ELECTRONIC DEVICES &CIRCUITS UNIT 4-AMPLIFIERS AND OSCILLATORS PART
More informationMAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI UNIT III TUNED AMPLIFIERS PART A (2 Marks)
MAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI-621213. UNIT III TUNED AMPLIFIERS PART A (2 Marks) 1. What is meant by tuned amplifiers? Tuned amplifiers are amplifiers that are designed to reject a certain
More informationEE133 - Prelab 1 Amplitude Modulation and Demodulation
Prelab 1 - AM Modulation - Prof. Dutton - EE133 Winter 2004 1 EE133 - Prelab 1 Amplitude Modulation and Demodulation 1 Introduction This week we will be taking a look at the amplitude modulation (AM) scheme.
More informationIn-Class Exercises for Lab 2: Input and Output Impedance
In-Class Exercises for Lab 2: Input and Output Impedance. What is the output resistance of the output device below? Suppose that you want to select an input device with which to measure the voltage produced
More informationQuadrature Upconverter for Optical Comms subcarrier generation
Quadrature Upconverter for Optical Comms subcarrier generation Andy Talbot G4JNT 2011-07-27 Basic Design Overview This source is designed for upconverting a baseband I/Q source such as from SDR transmitter
More informationLow-Voltage IF Transceiver with Limiter/RSSI and Quadrature Modulator
19-1296; Rev 2; 1/1 EVALUATION KIT MANUAL FOLLOWS DATA SHEET Low-Voltage IF Transceiver with General Description The is a highly integrated IF transceiver for digital wireless applications. It operates
More informationFilters And Waveform Shaping
Physics 3330 Experiment #3 Fall 2001 Purpose Filters And Waveform Shaping The aim of this experiment is to study the frequency filtering properties of passive (R, C, and L) circuits for sine waves, and
More informationHomework Assignment 05
Homework Assignment 05 Question (2 points each unless otherwise indicated)(20 points). Estimate the parallel parasitic capacitance of a mh inductor with an SRF of 220 khz. Answer: (2π)(220 0 3 ) = ( 0
More informationHAMTRONICS TB901 FM EXCITER INSTALLATION, OPERATION, & MAINTENANCE
HAMTRONICS TB901 FM EXCITER INSTALLATION, OPERATION, & MAINTENANCE GENERAL INFORMATION. The TB901 is a single-channel low power fm transmitter (exciter) designed to provide 300-600 milliwatts continuous
More informationEE 482 Electronics II
EE 482 Electronics II Lab #4: BJT Differential Pair with Resistive Load Overview The objectives of this lab are (1) to design and analyze the performance of a differential amplifier, and (2) to measure
More informationHigh performance low power mixer FM IF system
DESCRIPTION The is a high performance monolithic low-power FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, muting, logarithmic received
More informationAssist Lecturer: Marwa Maki. Active Filters
Active Filters In past lecture we noticed that the main disadvantage of Passive Filters is that the amplitude of the output signals is less than that of the input signals, i.e., the gain is never greater
More informationFREQUENCY RESPONSE AND PASSIVE FILTERS LABORATORY
FREQUENCY RESPONSE AND PASSIVE FILTERS LABORATORY In this experiment we will analytically determine and measure the frequency response of networks containing resistors, AC source/sources, and energy storage
More informationDesigning a 960 MHz CMOS LNA and Mixer using ADS. EE 5390 RFIC Design Michelle Montoya Alfredo Perez. April 15, 2004
Designing a 960 MHz CMOS LNA and Mixer using ADS EE 5390 RFIC Design Michelle Montoya Alfredo Perez April 15, 2004 The University of Texas at El Paso Dr Tim S. Yao ABSTRACT Two circuits satisfying the
More information