Local oscillating frequency synthesizer for use in a TDMA system

Details Local oscillating frequency synthesizer for use in a TDMA system Local oscillating frequency synthesizer for use in a TDMA system

1992-07-31

1993-12-14

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural oscillators controlled

331 25, 331 49, 328 14, 455 76, 4551831, 455260, H03L 707

Patent

active

052706699

ABSTRACT:
A local oscillating frequency synthesizer includes a pair of synthesizers, one being used for synchronizing the frequencies of the communication channels used for the transmission and reception slots, and the other for synchronizing the frequencies when the electric field level of the other station is monitored and information is read out between idle slots other than the transmission and reception slots. Therefore, without using a high speed frequency switching synthesizer such as a direct digital synthesizer or the like, the synchronization of the frequencies by switching can be achieved in a short period of time and a local oscillating portion which is low in power consumption can be obtained.

REFERENCES:
patent: 4086544 (1978-04-01), Fried
patent: 4659999 (1987-04-01), Motoyama et al.

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