Receiver including surface acoustic wave amplifier

Details Receiver including surface acoustic wave amplifier Receiver including surface acoustic wave amplifier

1984-06-22

1986-09-02

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455208, 455341, 455214, 330 49, H04B 126, H03F 700

Patent

active

046100318

ABSTRACT:
A receiver includes a surface acoustic wave amplifier provided in a high frequency amplification stage and generating two outputs corresponding to acoustic waves which propagate through said amplifier in the opposite directions. One of the outputs is demodulated by a phase locked loop demodulator or by a frequency discriminator and is applied to and controls a voltage control oscillator. Frequency modulated components of an output from the voltage control oscillator is used to produce frequency modulated components of a pumping power for the surface acoustic wave amplifier.

REFERENCES:
patent: 3217259 (1965-11-01), Kotzebue et al.
patent: 3784916 (1974-01-01), Maurer
patent: 4426732 (1984-01-01), Mori
patent: 4426737 (1984-01-01), Mori

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