Method for generating frequencies in a direct conversion transce

Details Method for generating frequencies in a direct conversion transce Method for generating frequencies in a direct conversion transce

1997-03-25

1999-11-09

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

With frequency stabilization

455 86, 4551791, 4551881, 455260, H04B 140

Patent

active

059830816

ABSTRACT:
The invention relates to a method for generating frequencies in a direct conversion transceiver of a radio communication system operating in two different frequency bands. In this method a first frequency band comprises a first transmission frequency band and a first reception frequency band, and a second frequency band comprises a second transmission frequency band and a second reception frequency band. The frequencies are Generated by using one frequency synthesizer (12) and a reference oscillator (14), which generates an essentially constant mixing frequency (L04).

REFERENCES:
patent: 5091919 (1992-02-01), Kuisma
patent: 5123031 (1992-06-01), Kuisma
patent: 5519885 (1996-05-01), Vaisanen
patent: 5564076 (1996-10-01), Auvray
patent: 5584068 (1996-12-01), Mohindra
patent: 5790587 (1998-08-01), Smith et al.

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