Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1993-09-24
1995-06-06
Urban, Edward F.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455 121, 455 76, 455260, 331 14, 331 16, 331 25, H04B 150, H03L 706
Patent
active
054230764
ABSTRACT:
A transceiver which operates in separate transmit and receive bands has a first conversion stage for generating a first IF signal translation of a receive signal, which first conversion stage also functions as a first and final, hence, single conversion stage for generating a transmit signal at its transmission frequency. A modulated transmit signal component used in the single conversion to the transmission frequency of the transmission signal has harmonics which lie outside the transmission band and is of a frequency which permits a substantial overlap of transmit and receive injection frequencies generated by a first numerically controlled signal generator which are applied to a first mixer of the first conversion stage during respective transmit and receive mode operations.
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Mroch Alan B.
O'Neill, Jr. Gregory A.
Westergren Larry L.
Hamann H. Fredrick
Murrah M. Lee
Rockwell International Corporation
Urban Edward F.
Williams Gregory G.
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