Use of a VCXO in the base unit of a two-handset cordless telepho

Details Use of a VCXO in the base unit of a two-handset cordless telepho Use of a VCXO in the base unit of a two-handset cordless telepho

1996-07-22

1997-04-29

Bost, Dwayne

Telephonic communications

Audio message storage, retrieval, or synthesis

379 58, 455315, 455114, H04M 1100

Patent

active

056256744

ABSTRACT:
A cordless telephone system includes a single base unit and at least two remote handunits, where the base unit employs two transmitter channels coupled together through a low impedance and coupled to a single antenna. The transmitter channels include voltage controlled crystal oscillators (VCXOs) and frequency tripler circuitry, rather than PLLs in order to keep intermodulation distortion at the outputs of the transmitter amplifiers to a minimum.

REFERENCES:
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patent: 4932072 (1990-06-01), Toko
patent: 4935927 (1990-06-01), Kaewell, Jr. et al.
patent: 5133002 (1992-07-01), Kikuchi et al.
patent: 5239686 (1993-08-01), Downey

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