Download PTU M.Tech. ECE 1st Semester 75178 RF AND MICROWAVE CIRCUIT DESIGN Question Paper

Download PTU. I.K. Gujral Punjab Technical University (IKGPTU) M.Tech. ECE 1st Semester 75178 RF AND MICROWAVE CIRCUIT DESIGN Question Paper.

1 | M-75178 (S35)-1915

Roll No. Total No. of Pages : 01
Total No. of Questions : 08
M.Tech. (ECE) (2018 Batch) (Sem.?1)
RF AND MICROWAVE CIRCUIT DESIGN
Subject Code : MTEC-PE2B-18-2
M.Code : 75178
Time : 3 Hrs. Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :
1.Attempt any FIVE questions out of EIGHT questions.
2.Each question carries TWELVE marks.

1. a) What is Rat-race junction? [6]
b) Define matching network. [6]
2. a) What is the basic difference between IMPATT and TRAPATT diodes? [6]
b) State the two parameters that describe a directional coupler. Define them. [6]
3. a) Derive the properties of scattering matrix. [6]
b) Explain the working operation of Transferred electron devices (TED). [6]
4. a) Derive the S matrix for H plane TEE junction. [8]
b) Explain in detail noise figure in an amplifier. [4]
5. Derive an expression for cut off magnetic field for a cylindrical magnetron. [12]
6. a) Describe the losses in microwave devices. [6]
b) Explain the working principle of Tunnel diode with performance characteristics. [6]
7. A 50 ohm lossless line connects a matched signal of 100LHz to a load of 100 ohm. The
load power is 100mW. Calculate the voltage reflection coefficient and VSWR of the Load.
[12]
8. Write Short notes on (Any Two) :
a) Microwave BJTs [6]
b) PIN diode [6]
c) Broad band amplifier [6]
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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