RF and Microwave Engineering Premium Lecture Notes, Prepared by Kavi. Specially for Electronics and Communication Engineering. Syllabus Covered based on Anna University B.E Electronics and Communication Engineering.(Regulation 2008)
CONTENT:
UNIT-1 MICROWAVE NETWORK THEORY (Pg.no:48)
UNIT-2 RF AMPLIFIER AND MATCHING NETWORK (Pg.no:35)
UNIT-3 PASSIVE AND ACTIVE MICROWAVW DEVICES (Pg.no:32)
UNIT-4 MICROWAVE GENERATION (Pg.no:14)
Attachment: click hereINTRODUCTION
Ultra high frequency (UHF)
Super high frequency (SHF)
Extremely high frequency (EHF)
Lumped element model
Distributed element model or transmission line model
Types of transmission model
1. Wires
2. Coaxial cable
3. Dielectric slab
4. Strip lines
5. Optical fiber
6. Electric power line
7. Waveguides
Microwave frequency bands
UNIT-1
MICROWAVE NETWORK THEORY
Introduction
Symmetrical Z and Y matrices for reciprocal network
Reciprocal network
Scattering matrix representation of multiport network
Properties of S-parameters
S-matrix of a two port network with mismatched load
Comparison between [s],[z],and[y] parameters
Relationship between y-z and abcd parameters with s-parameters
UNIT-2
RF AMPLIFIER AND MATCHING NETWORK
Wave guide tees
E plane tees
Zero properties of S matrix
Unity property of S matrix
TEE function
H plane tee
E plane tee
Magic tee
Directional coupler
Coupling factor
Directivity
Isolator
Operating principle
Microwave circulators
Coaxial connectors and adaptors
Types of connectors
Wave guide corner , bends and twists
Wave guide sections
Rectangular to circular waveguide transition
Matched termination
Waveguide flanges
Coaxial line to waveguide adaptor
Alternators
Classification
1. Fixed alternator
2. Variable alternator
3. Precision type alternators
Phase shifter
Precision phase shifter
Coupling loop
Coupling aperture
Problems
Directional couplers
UNIT-3
PASSIVE AND ACTIVE MICROWAVW DEVICES
Introduction
Reflex klystron oscillator
Mechanism of oscillation
Mode of oscillation
Power output and efficiency
Velocity modulation
Transit time
Power output and efficiency of reflex klystron
Problems
Two cavity klystron
Velocity modulation
Transit time for an electron to travel a distance L
Travelling wave tube
Analysis of TWTA
1. Wave propogation in helix
2. Beam and field interaction
3. Focusing
4. Reflection of waves
Gain characteristics
Distortion
1. Intermodulation distortion
2. Phase non linearity
3. Harmonic distortion
4. Current noise
Problems
UNIT-4
MICROWAVE GENERATION
1. Diodes
2. Transistor
3. IC’s
Merits
Application
Diodes
Crystal diode
Diode detector circuit
Diode mixer
Conversion loss
Design example of a harmonic mixer
Varactor diode
Application
Tunnel diode
Tunnel diode amplifier
Attachment: click here
