Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1998-08-04
2000-10-24
Tsang, Fan
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455 82, 455 76, 375344, 375219, H04B 140
Patent
active
061379972
ABSTRACT:
A circuit (30) and method for translating a spectrum of a modulated signal. The circuit (30) includes a mixer (33), a summing device (36), and a synthesizer (37). The circuit (30) receives and transmits modulated Radio Frequency (RF) signals. The synthesizer (37) generates a transmitter modulated RF signal (TX.sub.RF) using a modulating signal (TX.sub.MOD). The mixer (33) generates an intermediate frequency signal (IF) by mixing a receiver modulated RF signal (RX.sub.RF) with the transmitter modulated RF signal (TX.sub.RF). The summing device (36) removes modulation of the transmitter modulated RF signal (TX.sub.RF) by combining the intermediate frequency signal (IF) with the modulating signal (TX.sub.MOD).
REFERENCES:
patent: 5001776 (1991-03-01), Clark
patent: 5142551 (1992-08-01), Borth et al.
patent: 5355524 (1994-10-01), Higgins, Jr.
patent: 5493583 (1996-02-01), Cripps
patent: 5734970 (1998-03-01), Saito
patent: 5977835 (1999-11-01), Huang
patent: 5987074 (1999-11-01), Wakamatsu
patent: 5991605 (1999-11-01), Rapeli
Durec Jeffrey C.
Lovelace David Kevin
Schoepf K. Juergen
Wortel Klaas
Jama Isaak R.
Martinez Anthony M.
Motorola Inc.
Tsang Fan
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