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Old 28th Nov 2017, 11:35 pm   #7
Skywave
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Join Date: Jun 2006
Location: Chard, South Somerset, UK.
Posts: 7,457
Arrow Re: Attenuators - theory and the design of.

The Chemandy calculators are clearly useful. But they are not applicable to my question. My Q. clearly stated that it was not in relation to transmission lines, which the Chemandy article does exclusively.

I can readily understand and appreciate that the original use of 'attenuators' (and their appropriate design equations) were originally for use with transmission lines, which have a characteristic 'impedance' which appears as a resistance, but is not a real, physical resistance. Hence, the use of 'Z' in the equations. But my post refers to attenuators that are not used in connection with TX lines, but actual impedances of the form Z = R ± jX, where X is not zero.

Al.
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