Microwave Measurement

Microwave Bench basic blocks and measurement

What you'll learn
Undestand Microwave measurement blocks in bench that includes Source, Isolator, Attenuator, wavemeter, slotted section with probe carriage and Termination.
Measure various microwave parameter using Bench.
Creat a setup for measurement of microwave parameter using waveguide components.
Selection of waveguide components for measurement of microwave parameter.
Create log book for measured parameter to unerstand measurement.
Requirements
knowlege of communication engineering.
knowledge of measurement tools like CRO.
Description
In general microwave are considers as different from Electromagnetic spectrum. Since wave propagation takes place at microwave frequency has very small wave. Therefor the microwave measurement carried at different microwave range. At low frequency, the circuit theory is used to measure the signal frequency components in terms of voltage and current. But at high frequency parameters like frequency, attenuation, voltage standing wave ratio, phase, and impedance are not calculated using voltage and current. Therefore, microwave bench is used for measurement of microwave parameter. The instruments that measure the parameter at microwave frequency are network analyzer, Spectrum analyzer, power meter, etc. The cost of these devices are very high, therefore in laboratory parameters measurement can be done using microwave bench with the help of test signal. The test signal is used at microwave measurement is of 1 KHz square wave signal. This signal is modulated using source and calibrated at the end of bench connected with detector. The detector output is connected to the cathode ray oscilloscope to observe the behaviour of the test signal. The Slotted section with probe carriage is used to detect these test signal at cathode ray oscilloscope or voltage standing wave ratio detector. The amplitude and phase information of the test signal are used for measurement of microwave parameter.

Overview

Section 1: Microwave Measurement Basic Building Blocks

Lecture 1 Introduction to Microwave Measurement

Section 2: Microwave parameter measurement

Lecture 2 Measurement of Power and Q of Cavity

Lecture 3 Measuremnt of Attenuation and Frequency

Lecture 4 Measurement of VSWR and unknown Impedance

Lecture 5 Measurement of S Parameter

Section 3: MCQ on Microwave measurement

Lecture 6 MCQ on Measurement

Section 4: Test on Measurement

Beginners want to measure the microwave parameter without network analyzer.,How to setup the microwave bench for parameter measurement?