EC8701 Antenna and MicroWave Engineering (AWE)

 

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Important questions 
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UNit 1

1.Near- and far-field regions,Antenna Pattern Characteristics, Gain and Efficiency, 2.Friis transmission equation, Link budget and link margin, Noise Characterization UNIT-2 1.Design considerations and applications. 2.Aperture antennas,Frequency independent antenna , Reflector antenna , UNIT-3 1.Phased arrays, Adaptive array 2.N element linear array 3.Pattern multiplication

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UNIT-4 1.Directional Coupler, Power Divider, Magic Tee, attenuator, resonator or 2.IMPATT diodes, Schottky Barrier diodes,Klystron, TWT, Magnetron UNIT-5 1.Impedance Matching, Microwave Filter Design, RF and Microwave Amplifier Design 2.Low Noise Amplifier Design, Microwave Mixer Design, Microwave Oscillator Design

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**Very important questions are bolded and may be asked based on this topic

PART-C

1.Compulsory Questions {a case study where the student will have to read and analyse the subject }
mostly asked from unit 2, 5(OR) a situation given and you have to answer on your own

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SYllabuS

UNIT I INTRODUCTION TO MICROWAVE SYSTEMS AND ANTENNAS
Microwave frequency bands, Physical concept of radiation, Near- and far-field regions, Fields and Power Radiated by an Antenna, Antenna Pattern Characteristics, Antenna Gain and Efficiency, Aperture Efficiency and Effective Area, Antenna Noise Temperature and G/T, Impedance matching, Friis transmission equation, Link budget and link margin, Noise Characterization of a microwave receiver.

UNIT II RADIATION MECHANISMS AND DESIGN ASPECTS
Radiation Mechanisms of Linear Wire and Loop antennas, Aperture antennas, Reflector antennas, Microstrip antennas and Frequency independent antennas, Design considerations and applications.

UNIT III ANTENNA ARRAYS AND APPLICATIONS
Two-element array, Array factor, Pattern multiplication, Uniformly spaced arrays with uniform and non-uniform excitation amplitudes, Smart antennas.
UNIT IV PASSIVE AND ACTIVE MICROWAVE DEVICES
Microwave Passive components: Directional Coupler, Power Divider, Magic Tee, attenuator, resonator, Principles of Microwave Semiconductor Devices: Gunn Diodes, IMPATT diodes, Schottky Barrier diodes, PIN diodes, Microwave tubes: Klystron, TWT, Magnetron.
UNIT V MICROWAVE DESIGN PRINCIPLES
Impedance transformation, Impedance Matching, Microwave Filter Design, RF and Microwave Amplifier Design, Microwave Power amplifier Design, Low Noise Amplifier Design, Microwave Mixer Design, Microwave Oscillator Design
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