MindStudy - MindStudy

Question:

Published on: 12 October, 2024

What is scattering Parameters? Why is it used in microwave Network?

Answer:

Any two port networks are represented by a special type of parameter by which reflection co- efficient or transmission co – efficient of any network is measured. This special type of parameter is called scattering parameter of S - parameter.

Characteristics of microwave devices can be represented by its scattering parameters (S- parameters) instead of conventional Z, Y or hybrid parameter for following reason

No equipments are readily available to measure total voltage and total currents at the ports of the network.
Over a broad band of frequencies it is difficult to achieve short and open circuits.
Active devices like tunnel diode and power transistors frequently will not have stability for a short or open circuit. The scatter parameters are the reflection co- efficient of a port and transmission co- efficient between different ports with other ports matched terminated. These are also the frequently measured quantities and can be measured readily with the help of a network analyzer.

Subjects

Basic Electrical Engineering Radio Frequency and Microwave Engineering Power Electronics Electrical Engineering Management Analog Communication

Trending

A multi hole directional coupler is fed with single power of 2.8 mW at 10 GHz. The coupling factor is 3 dB and the directivity is better than 40 dB over X-band range. Find the distribution of power at all other ports.

12 October, 2024

What is microstrip line? What are the advantages and disadvantages of microstrip line? Show the electric and magnetic field lines of microstrip line explain the working principle of a microstrip antenna.

12 October, 2024

Define microwave. What is the significance of using ‘S’ parameter in microwave engineering.

12 October, 2024

Why Schottky diodes are suitable for microwave region?

12 October, 2024

Discuss the operating principle of Faraday’s rotation isolator.

12 October, 2024