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output impedance measurement

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deepak007

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hello

i built a small fm transmitter.pls tell me how to measure the output impedance of the oscillator stage inorder to match the antenna.
 

Ideally is to use a Network Analyzer.
If you don’t have something like this try to implement a variable L matching network (a trim-capacitor and a variable core inductor) tuned around the working frequency. Using a receiver on the other side, tune the antenna match for maximum received signal.
 

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