Polar frequency discriminators (PFD) are widely used in radar and direction-finding applications to determine the unknown frequency of incoming pulses. This article explains how to design the RF ...
AM radios were easy to understand. The strength of the signal goes up and down, and the audio follows. FM radio is a little more difficult. [AllAmericanFiveRadio] has an old tube FM set and takes us ...
Forming a unique combo, the T860 teams a precision analog comparator and an output driver capable of operating from dc up to 1 GHz. The unit accepts nearly any single-ended or differential, logic, or ...
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