Using a single low-noise amplifier in a multi-band wireless stat

Details Using a single low-noise amplifier in a multi-band wireless stat Using a single low-noise amplifier in a multi-band wireless stat

1998-09-30

2000-10-17

Le, Thanh Cong

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

4551891, 4551932, 455553, 330126, 330129, H04B 106

Patent

active

061344273

ABSTRACT:
A wireless communication device, such as a dual-mode cellular phone, receives radio frequency (RF) signals in either of two communication bands. Each received RF signal is passed to two bandpass filters, one for each communication band, the outputs of which are connected to a single amplifier. The amplifier processes the received signal regardless of the communication band in which the signal was received. The amplifier can include two sets of similar circuitry, e.g., matching circuits, one for each communication band, which are selected alternatively to process received signals in the corresponding communication band.

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