Telecommunications – Transmitter – With feedback of modulated output signal
Patent
1994-08-26
1997-12-09
Eisenzopf, Reinhard J.
Telecommunications
Transmitter
With feedback of modulated output signal
455116, H01Q 1112
Patent
active
056970730
ABSTRACT:
A transmitter architecture is disclosed which offers a new combination of signal shaping and power control which optimizes transmitter noise figure performance. The disclosed apparatus and method is implemented by separating the shaping element (303) from the power control elements (406, 412, 418) in frequency. Placing the shaping element (303) at a fixed intermediate frequency (IF) allows for the use of readily available, temperature stable shaping elements while distributing the power control elements (406, 412, 418) at radio frequency (RF) facilitates optimization of noise figure performance in the transmitter (200).
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Daniel Christopher John
Holoubek Kevin Joseph
Banks-Harold Marsha D.
Eisenzopf Reinhard J.
Motorola Inc.
Sonnentag Richard A.
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