Chapter 14. Waveguide and Antenna Fundamentals

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Presentation transcript:

Chapter 14. Waveguide and Antenna Fundamentals Basic Waveguide Operation

Transmission Line(Fig. 14.6(a)) Voltage applied between conductors( E: vertically between the conductors) Interior fields: TEM wave (wave vector indicates the direction of wave travel as well as the direction of power flow) Waveguide (Fig. 14.6(b)) Zig-zag reflection, waveguide mode, cutoff frequency

Two Types of weveguide modes TE(Transverse electric) mode E parallel to the transverse plane of the waveguide TM(Transverse magnetic) mode H is within the transverse plane of the waveguide

Plane Wave Analysis of the Parallel-Plate Waveguide Phase fronts: out of phase Phase fronts: in phase(guided mode)

Field Configuration(TE): Fig. 14.11

Parallel-Plate Guide Analysis using the Wave Eq.