Wideband variable gain amplifier in an ultra wideband receiver

Details Wideband variable gain amplifier in an ultra wideband receiver Wideband variable gain amplifier in an ultra wideband receiver

2005-08-30

2008-08-05

Phu, Sanh D. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S313000, C455S318000, C455S232100, C455S245200, C375S344000, C375S345000

Reexamination Certificate

active

07409198

ABSTRACT:
A method (700, 1100) and apparatus (300) are provided in a receiver for applying a variable gain to a received signal including a transmitted codeword in accordance with an Ultra Wideband (UWB) protocol. A first signal is generated and input to a selectable gain stage including a series of selectable 0 dB and 9 dB gain elements (302-305). The first signal includes the received signal mixed with a local oscillator signal modified according to a reference codeword. A gain value is selected from the selectable gain stage to amplify the first signal and form a second signal. An output signal is generated by combining the second signal and the modified local oscillator signal.

REFERENCES:
patent: 4017798 (1977-04-01), Gordy et al.
patent: 4285060 (1981-08-01), Cobb et al.
patent: 2005/0195038 (2005-09-01), Neenan et al.
patent: 2007/0040744 (2007-02-01), Zimmerman et al.

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