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Half wave transformer. Quarter wave transformer

Lecture



Half wave transformer. In the vicinity of the point Half wave transformer.  Quarter wave transformer The argument of trigonometric functions can be presented as follows:

Half wave transformer.  Quarter wave transformerHalf wave transformer.  Quarter wave transformer

( For simplicity, it is assumed that the phase velocity in the transmission line does not depend on frequency. )

Putting in (3.21) Half wave transformer.  Quarter wave transformer , Half wave transformer.  Quarter wave transformer and Half wave transformer.  Quarter wave transformer , i.e., keeping the values ​​of the first order of smallness by Half wave transformer.  Quarter wave transformer get Half wave transformer.  Quarter wave transformer

(3.22) where Half wave transformer.  Quarter wave transformer —The normalized impedance of the transformer.

Quarter wave transformer. Using frequency variable representation Half wave transformer.  Quarter wave transformer where Half wave transformer.  Quarter wave transformerHalf wave transformer.  Quarter wave transformer and believing in (3.21) Half wave transformer.  Quarter wave transformer , Half wave transformer.  Quarter wave transformer and we get

, Half wave transformer.  Quarter wave transformer (3.23)

Where Half wave transformer.  Quarter wave transformer - surge wave resistance for transmission lines interconnected by means of a quarter-wave transformer.


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Microwave Devices and Antennas

Terms: Microwave Devices and Antennas