CDMA transmitter having a variable gain circuit inserted between

Details CDMA transmitter having a variable gain circuit inserted between CDMA transmitter having a variable gain circuit inserted between

1997-03-19

2000-03-21

Luther, William

Pulse or digital communications

Transmitters

Antinoise or distortion

455116, 455126, H04L 2503

Patent

active

060410817

ABSTRACT:
A CDMA transmitter having a variable gain circuit inserted between a transmitter mixer and a transmitter antenna. The gain is controlled in response to the RF output power so that the spurious emission level at the maximum RF output power and that at output power reduced by a predetermined amount can be both satisfied. This makes it possible to increase the degree of freedom of choosing circuit components in the RF stage.

REFERENCES:
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5396516 (1995-03-01), Padovani et al.
patent: 5504773 (1996-04-01), Padovani et al.
patent: 5604730 (1997-02-01), Tiedemann, Jr.
M. Leonar, "Digital Cellular System in the U.S., CDMA and TDMA are competing," Nikkei Electronics, No. 579, Jan. 1993, Nikkei BP, Inc., Tokyo, pp. 163-175.
Ballot Version, "Mobile Station-Base Station Compatibility Standard for Dual-Model Wideband Spread Spectrum Cellular System" TIA/EIA Interim Standard, Jul. 1993.

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