Wave Ditribution (COMM 701) Content Content. Aement. Reference. Review of Maxwell Equation. Rectangular waveguide. Rectangular waveguide TM mode. COMM (701) Lecture#1 1
Content Waveguide (Metallic) Type (Rectangular and circular), Mode (TE and TM), Dominant Mode, Loe. Antenna Element: type and configuration, propertie, and Analyi. Array: type and configuration, and analyi. Aement Quizze (2-3) 20 Tutorial Aignment 5 Project 10 Mid Term Examination 20 Final Examination 45 Total 100 COMM (701) Lecture#1 2
Coure Teaching Aitant Wave Ditribution Eng. Yamine Abdala Communication Lab. Reference Waveguide David M. Pozar, Microwave Engineering, 3rd Edition, Wiley. Antenna John D. Krau and Ronald J. Marhefka, Antenna, 3rd Edition, McGraw-Hill Science. Contantine A. Balani, Antenna Theory: Analyi and Deign, 3rd Edition, 3rd Edition, Wiley-Intercience. COMM (701) Lecture#1 3
Waveguide Square Waveguide Double Ridge Rectangular Waveguide Elliptical Waveguide Waveguide COMM (701) Lecture#1 4
Antenna Definition: A mean for radiating or receiving radio wave. The tranitional tructure between free-pace and a guiding tructure. An antenna convert bound circuit field into propagating electromagnetic wave and by reciprocity remove power from paing electromagnetic wave. Antenna COMM (701) Lecture#1 5
Antenna iphone 5 Model A1533 (CDMA) * : Cellular: CDMA EV-DO Rev. A and Rev. B (800, 1700/2100, 1900, 2100 MHz); UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz); LTE* (Band 1, 2, 3, 4, 5, 8, 13, 17, 19, 20, 25) Wirele: 802.11a/b/g/n Wi-Fi (802.11n 2.4GHz and 5GHz) Bluetooth 4.0 wirele technology Location: Aited GPS and GLONASS * * LTE = Long Term Evolution ** Global Navigation Satellite Sytem, i a pace-baed atellite navigation ytem operated by the Ruian Aeropace Defence Force. It provide an alternative to Global Poitioning Sytem (GPS) and i the only alternative navigational ytem in operation with global coverage and of comparable preciion. COMM (701) Lecture#1 6
Adaptable Reconfigurable Antenna Array Sytem with Multi-Angle and Tri-Polarization Diverity GUC RF TEAM Ehab Muhammad Norhan Mahmoud Karim http://www.youtube.com/watch?v=zvmkiff_8c COMM (701) Lecture#1 7
Static & Dynamic Field Stationary Charge Steady Current Electrotatic Field Magnetotatic Field Static EM Field: Static, or time invariant. The electric and magnetic field are independent. Time-varying Current Electromagnetic Field (Wave) Time-varying EM field: Dynamic, or time varying. The electric and magnetic field are interdependent. Maxwell Equation Differential (or point form) D ρ v B 0 B E t D H J t Remark Gau Law Nonexitence of iolated Magnetic charge Faraday Law Ampere Circuit Law D.dS S S L L Integral Form ρ dv v B.dS 0 E.dl BdS t S D H.dl J.dS t S v electric field intenity (V/m) electric flux denity (C/m 2 ) magnetic field intenity (H/m) magnetic flux denity (Wb/m 2 ) COMM (701) Lecture#1 8
Auxiliary & Current Equation The auxiliary Equation D E Permittivity (F/m) B H o r Permeability (H/m) o r Permittivity of free pace (F/m) Relative Permittivity (Dimenionle) o 8.85410 12 F/m Permeability of free pace (H/m) Relative Permeability (Dimenionle) o 4 10 7 H/m The current denity (J [A/m 2 ]) Conduction Current J E Convection Current J v v Conductivity (S/m) Volume Charge Denity (C/m 3 ) Velocity (m/) Boundary Condition E1 t E2 t Tangential component or E1 t E2t Normal component D 1 n D 2 n ρ Special Cae if ρ 0 D1 n D2 n Surface charge Denity (C/m 2 ) Unit vector normal to the interface between medium 1 & 2 pointing from 1 to 2 H H a K ˆ 1 2 n12 Special Cae if 0 H 1t H2t Surface current Denity (A/m) B1 n B2 n K COMM (701) Lecture#1 9
Metallic waveguide Rectangular waveguide tranvere magnetic wave. Maxwell Equation E jb jh H jd J je E If lole 0 v E j H H D If 0 E 0 E 0 B 0 H 0 Curl of both ide of (1) E v (4) E (1) j H H 2 E E E 2 E 2 E From (3) 0 2 2 E E 0 j je (3) E 2 2 0 E (2) COMM (701) Lecture#1 10
Maxwell Equation Let 2 2 2 2 0 Similarly 0 E 2 2 2 2 k k E 0 By olving thi equation, then E E x x, y, zaˆ x E y x, y, zaˆ y E z x, y, zaˆ z H H x, y, z aˆ H x, y, z aˆ H x, y, z aˆ x x y y z z We have three poibilitie for olution TEM: Tranvere electromagnetic wave H Helmholtz Or Wave-equation No field component (E or H) in the direction of propagation. TE: Tranvere electric. No E field component in the direction of propagation. TM: Tranvere magnetic No H field component in the direction of propagation. COMM (701) Lecture#1 11