Mobile data receiving system

Details Mobile data receiving system Mobile data receiving system

1980-01-23

1982-02-23

Richardson, Robert L.

Telecommunications

Transmitter and receiver at same station

With frequency stabilization

455 89, 375111, 375 7, 179 2E, H04B 138

Patent

active

043172210

ABSTRACT:
A mobile data receiving system for a mobile communication system is disclosed. A clock signal for a digital phase synchronization loop circuit used for receiving digital data such as a dial number is obtained by multiplying or dividing the frequency of the output signal of a highly-stable oscillator for generating a reference frequency for a frequency synthesizer. Also, noise which is generated by the operation of the digital phase synchronization loop circuit is prevented from deteriorating the performance of the transmitter-receiver by the use of a matching circuit located between the frequency multiplier or divider and the digital phase synchronization loop circuit.

REFERENCES:
patent: 4019153 (1977-04-01), Cox
patent: 4030045 (1977-06-01), Clark
patent: 4031330 (1977-06-01), Van Leeuwen
patent: 4038494 (1977-07-01), Miller
patent: 4061980 (1977-12-01), Sato
patent: 4070626 (1978-01-01), Binder
patent: 4186343 (1980-01-01), Kakigi

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