by detecting phase difference between two signals obtained from input signal (H03D3/28 - H03D3/32 take precedence; ; limiting arrangements H03G11/00)

Full Title

Demodulation of angle-, modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence) > by detecting phase difference between two signals obtained from input signal (H03D3/28 - H03D3/32 take precedence; ; limiting arrangements H03G11/00)

Child Classifications

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• H03D 3/04 by counting or integrating cycles of oscillations
• H03D 3/06 by combining signals additively or in product demodulators
• H03D 3/18 by means of synchronous gating arrangements
• H03D 3/22 by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector
• H03D 3/24 Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits