Wireless device minimizing use of external bandpass filter...

Details Wireless device minimizing use of external bandpass filter... Wireless device minimizing use of external bandpass filter...

2005-08-04

2008-12-09

Phu, Sanh D (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S232100, C455S323000, C455S314000, C455S255000

Reexamination Certificate

active

07463875

ABSTRACT:
A receiver system design and architecture that implements a 3-step gain LNA and an analog VGA for a WCDMA handsets and local area base stations, providing a wireless device eliminating the use of external bandpass filter between low-noise amplifier and first mixer.

REFERENCES:
patent: 6965656 (2005-11-01), Koizumi
patent: 7076231 (2006-07-01), Yamawaki et al.
patent: 2003/0139147 (2003-07-01), Shi
patent: 2004/0137853 (2004-07-01), Tanaka et al.

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