US PATENT SUBCLASS 329 / 340
.~.~ Including plural detector diodes (e.g., ratio detector type)

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329 /   HD   DEMODULATORS

315  DF  FREQUENCY MODULATION DEMODULATOR {7}
327  DF  .~ Input signal split into plural signals {5}
340.~.~ Including plural detector diodes (e.g., ratio detector type)

DEFINITION

Classification: 329/340

Including plural detector diodes (e.g., ratio detector type):

(under subclass 327) Subject matter which additionally utilizes a plurality of diodes in demodulation.

(1) Note. An example of this structure is a ratio detector where the ratio of a pair of diode rectified currents is proportional to frequency variations of an input signal.