Subsampling communication receiver architecture with relaxed...

Details Subsampling communication receiver architecture with relaxed... Subsampling communication receiver architecture with relaxed...

2005-11-08

2005-11-08

Trinh, Sonny (Department: 2687)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency conversion between signal source and receiver

C455S137000, C455S323000

Reexamination Certificate

active

06963732

ABSTRACT:
A first periodic voltage waveform (20) is downconverted into a second periodic voltage waveform (35, 36). A plurality of temporally distinct samples (SA1, SA2, . . . ) respectively indicative of areas under corresponding fractional-cycles of the first voltage waveform are obtained. The samples are combined to produce the second voltage waveform, and are also manipulated to implement a filtering operation such that the second voltage waveform represents a downconverted, filtered version of the first voltage waveform. The second waveform is driven by an amplifier stage (25), and the second waveform can be advantageously constructed so as to permit the amplifier stage to perform internal resets, offset corrections and other ancillary amplifier stage adjustments without losing information in the first waveform.

REFERENCES:
patent: 5162723 (1992-11-01), Marzalek et al.
patent: 5640698 (1997-06-01), Shen et al.
patent: 6294896 (2001-09-01), Champlin
patent: 6438366 (2002-08-01), Lindfors et al.
patent: 6678709 (2004-01-01), Gandhi et al.
patent: 6697017 (2004-02-01), Shmuel
Copending U.S. Appl. No. 09/828,338, filed on Apr. 6, 2001.
Copending U.S. Appl. No. 09/850,435, filed on May 7, 2001.

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