High performance CMOS radio frequency receiver

Details High performance CMOS radio frequency receiver High performance CMOS radio frequency receiver

2008-01-29

2011-10-25

Vo, Nguyen (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S318000, C455S326000

Reexamination Certificate

active

08045943

ABSTRACT:
A high performance radio frequency receiver includes a low noise amplifier with large binary and stepped gain control range, controlled impedance, and enhanced blocker immunity, for amplifying and converting a radio frequency signal to a current; a pulse generator for generating in-phase and quadrature pulses; a crossover correction circuit and pulse shaper for controlling a crossover threshold of the pulses and interaction between in-phase and quadrature mixers; and a double balanced mixer for combining the RF signal with the pulses to generate an intermediate frequency or baseband zero intermediate frequency current-mode signal. The in-phase and quadrature pulses have a duty cycle of 20-35%. The intermediate frequency signal and second order harmonics may be filtered with a high frequency low pass filter and a current injected complex direct-coupled filter. Decreased die size, current drain, cost, and complexity, as well as improvements in gain, 1/f noise, noise figure, sensitivity, and linearity may result.

REFERENCES:
patent: 6963734 (2005-11-01), Sorrells et al.
patent: 7177616 (2007-02-01), Connell et al.
patent: 2006/0046681 (2006-03-01), Bagheri et al.
patent: 2006/0057983 (2006-03-01), Thompson et al.
patent: 2007/0132500 (2007-06-01), Embabi et al.
patent: 2007/0218857 (2007-09-01), Ismail et al.
patent: 2008/0303598 (2008-12-01), Rao et al.
Sacchi et al., “A 15 mW, 70 kHz 1 / ƒ Corner Direct Conversation CMOS Receiver”, IEEE 2003 Custom Integrated Circuits Conference, 2003, pp. 459-462.

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