Receive path implementation for an intermediate frequency transc

Details Receive path implementation for an intermediate frequency transc Receive path implementation for an intermediate frequency transc

1997-09-26

2000-11-14

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375345, 341139, 4552341, H04B 110

Patent

active

061480487

ABSTRACT:
A receive path implementation for an intermediate frequency (IF) transceiver is disclosed that provides increased signal processing integrity and accuracy with an efficient and improved design. A complex filter for a bandpass delta-sigma analog-to-digital converter (ADC) provides efficient complex noise shaping with a combination of real and complex filters. An automatic gain control (AGC) amplifier provides a constant bandwidth and zero variation phase shift for all gain levels. Clock adjust circuitry provides a clock signal with a jitter-free edge and a high percentage duty cycle. A fixed-gain input amplifier provides a matched input impedance. A method for choosing design specifications provides improved anti-aliasing properties.

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