Multiplex communications – Communication over free space – Repeater
Patent
1996-12-03
1999-11-02
Nguyen, Chau
Multiplex communications
Communication over free space
Repeater
370328, 455 63, 455426, H04L 700, H04J 116
Patent
active
059783621
ABSTRACT:
The invention describes method and apparatus for reducing intermodulation interference caused by reception of undesired signals in wireless receivers. The apparatus comprises an antenna for receiving the desired signal, a low noise amplifier for amplifying this signal, an adjustable attenuator, and a transmitting antenna to transmit the amplified signal to the wireless receiver. By increasing the strength of the desired signal, the present invention eliminates intermodulation distortion caused by the undesirable signals. The invention also describes an apparatus further comprising an adjustable filter for limiting the spectral content of the transmitted amplified signal, and an apparatus for selecting the characteristics of the adjustable filter in accordance with the measured characteristics of the desired and undesired signals.
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Chien-Yeh Lee William
Farrill F. Craig
AirTouch Communications, Inc.
Hyun Soon-Dong
Nguyen Chau
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