Note for High Frequency Engineering - HFE By Amiya Bhusana Sahoo

Limitations of conventional tubes, construction, operation

Reflex Klystron, Properties of Klystron Amplifier, TWT, Magnetron

Cross Field Amplifier, Backward Wave Oscillator

Analysis of Microwave components using s-parameters, Junctions (E, H, Hybrid)

Directional coupler; Bends and Corners; Microwave posts, S.S. tuners

Attenuators, Phase shifter, Ferrite devices (Isolator, Circulator, Gyrator); Cavity resonator.

Basic Principle-Block diagram and operation of Radar; Radar range Equation; Pulse Repetition Frequency (PRF) and Range Ambiguities

Doppler determination of velocity, Continuous Wave (CW) radar and its limitations, Frequency Modulated Continuous Wave (FMCW) radar, Basic principle and operation of Moving Target Indicator (MTI) radar, Delay line cancellers, Blind speeds and staggered PRFs.

Various scanning techniques (Horizontal, vertical, spiral, palmer, raster, nodding); Angle tracking systems (Lobe switching, conical scan, mono pulse)

Gunn diode

Limitation of conventional solid state devices at Microwaves; Transistors (Bipolar, FET)

Tunnel, Varactor, PIN,SBD, MASER

Avalanche transit time effect (IMPATT, TRAPATT);