Phase locked loop type transmitter receiver

Details Phase locked loop type transmitter receiver Phase locked loop type transmitter receiver

1977-03-14

1978-04-25

Kominski, John

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

325421, 331 22, H03B 304

Patent

active

040865452

ABSTRACT:
A phase locked loop type transmitter-receiver having a phase locked loop type synthesizer including a circuit in which a programmable counter, a phase discriminator, a low-pass filter, a voltage-controlled oscillator and a mixer are connected in a closed loop; wherein the mixer is connected to a reference oscillator connected to the phase discriminator through a fixed frequency divider, the mixer being adapted to mix frequencies fed from the reference oscillator and the voltage-controlled oscillator thereby synthesizing sum and difference signals thereof, the difference signal being fed to the programmable counter and the sum signal being fed to a transmitting-side mixer and a receiving-side mixer.

REFERENCES:
patent: 3588731 (1971-06-01), Hoeffer

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