QAM receiver

Details QAM receiver QAM receiver

2007-07-31

2007-07-31

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S213000, C324S523000, C324S603000, C324S604000, C324S605000, C324S606000

Reexamination Certificate

active

10303254

ABSTRACT:
A QAM receiver is disclosed. According to one aspect, a QAM receiver includes a signal input for receiving an analog input signal. Further, the QAM receiver includes an anti-aliasing filter and a series connected analog/digital converter for converting the received analog input signal into a digital signal. A carrier freguency loon detects a carrier freguency of the received analog input signal. A clock phase loon detects a clock phase of the received analog input signal. A control circuit is switchable between a receive mode of operation and a test mode of operation. In the test mode, the control circuit applies a center freauency adiusting signal to the carrier freauency loon for adiustment of a center freguency and applies a freguency band adjusting signal to the clock phase loon for adiustment of a freguency bandwidth to measure power level values for the entire freauency band of the received analog input signal.

REFERENCES:
patent: 5281931 (1994-01-01), Bailey et al.
patent: 5612975 (1997-03-01), Becker et al.
patent: 5881376 (1999-03-01), Lundberg et al.
patent: 6009317 (1999-12-01), Wynn
patent: 6714605 (2004-03-01), Sugar et al.
patent: 6928581 (2005-08-01), Tretter et al.
patent: 2002/0191685 (2002-12-01), Sadowski
patent: 694 00 162 (1996-12-01), None
patent: 197 41 181 (1999-03-01), None
patent: 693 22 330 (1999-04-01), None
patent: 694 20 727 (2000-01-01), None
patent: 199 26 101 (2001-02-01), None
patent: 0 473 373 (1992-03-01), None
patent: WO 01/28310 (2001-04-01), None
Cho et al., “A Frequency-Agile Single-Chip QAM Modulator with Beamforming Diversity,” IEEE Journal of Solid-State Circuits (USA), vol. 36 ( No. 3), p. 398-407, ( Mar. 2001).

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