Microwave EngineeringMicrowave Transmission Lines : Microwave spectrum and bands, Applications of microwaves. Rectangular Waveguides TE/TM mode analysis, Expressions for fields, Characteristic equation and cutoff frequencies, Filter characteristics, Dominant and degenerate modes, Sketches of TE and TM mode fields in the crosssection, Mode characteristics Phase and group velocities, Wavelengths and impedance relations; Power transmission and power losses in rectangular guide. Related problems.Circular Waveguides : Nature of fields, Characteristic equation, Dominant and degenerate modes. Impossibility of TEM mode. Microstrip lines Introduction, Z0 relations, Effective dielectric constant, Losses, Q factor. Cavity Resonators Introduction, Rectangular and cylindrical cavities, Dominant modes and resonant frequencies, Q factor and coupling coefficients. Related problems.Waveguide Components and Applications  I : Coupling mechanisms Probe, Loop, Aperture types. Waveguide discontinuities Waveguide irises, Tuning screws and posts, Matched Loads. Waveguide attenuators Resistive card, Rotary vane types; Waveguide phase shifters Dielectric, Rotary vane types. Waveguide multiport junctions E plane and H plane tees, Magic tee, Hybrid ring ; Directional couplers 2 Hole, Bethe hole types.Waveguide Components and Applications  II : Ferrites Composition and characteristics, Faraday rotation; Ferrite components Gyrator, Isolator, Circulator. Scattering matrix Significance, Formulation and properties. S matrix calculations for 2 port junction, E plane and H plane tees, Magic tee, Directional coupler, Circulator and isolator. Related problems.Microwave Tubes  I : Limitations and losses of conventional tubes at microwave frequencies. Microwave tubes O type and M type classifications. Otype tubes : 2 Cavity Klystrons Structure, Reentrant cavities, Velocity modulation process and applegate diagram, Bunching process and small signal theory Expressions for o/p power and efficiency. Reflex Klystrons Structure, Applegate diagram and principle of working, Mathematical theory of bunching, Power output, Efficiency, Electronic admittance; Oscillating modes and o/p characteristics, Electronic and mechanical tuning. Related problems.Helix TWTs: Significance, Types and characteristics of slow wave structures; Structure of TWT and amplification process (qualitative treatment), Suppression of oscillations, Nature of the four propagation constants, Gain considerations.Mtype Tubes : Introduction, Crossfield effects, Magnetrons Different types, 8Cavity cylindrical travelling wave Magnetron Hull cutoff and Hartree conditions, Modes of resonance and PIMode operation, Separation of PIMode, O/P characteristics.Microwave Solid State Devices : Introduction, Classification, Applications. TEDs Introduction, Gunn diode Principle, RWH theory, Characteristics, Basic modes of operation, Oscillation modes. Avalanche transit time devices Introduction, IMPATT and TRAPATT diodes Principle of operation and characteristics.Microwave Measurements : Description of microwave bench Different blocks and their features, Precautions; Microwave power measurement Bolometer method. Measurement of attenuation, Frequency, VSWR, Cavity Q. Impedance measurements. 
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Contents
Chapter 1 Microwave Transmission Lines  11 
Chapter  12 
Chapter3 Waveguide Components and Applications I  31 
Solved Examples 348  348 
Chapter5 Microwave Tubes  51 
Solved Examples 636  636 
r 7 Microwave Solid State Devices  71 
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Common terms and phrases
anode applications attenuation bandwidth bias Bolometer bunching Calculate capacitance catcher cavity cathode cavity Klystron cavity resonator coaxial cable conductor connector coupling cutoff frequency detector device dielectric directional coupler dominant mode electric field electromagnetic electron beam energy equation equivalent circuit Explain ferrite GaAs given grid Gunn diode Hplane tee helix inductance insertion loss isolator junction Klystron Klystron amplifier load magic tee magnetic field magnetron matched maximum measurement microstrip microwave frequencies microwave power microwave signal negative resistance operating frequency oscillator output power pn junction parameters parametric amplifier phase shift phase velocity PIN diode port Power loss probe propagation constant rectangular waveguide reflection coefficient reflex Klystron resonant cavity resonant frequency Smatrix Sparameters shown in Fig slotted line slow wave structure Solution standing wave strip line transmission line tube tuned Tunnel diode velocity modulation voltage VSWR Wave impedance waveguide wavemeter