Thermometer coded attenuator

Details Thermometer coded attenuator Thermometer coded attenuator

2011-03-22

2011-03-22

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Attenuators

C327S308000

Reexamination Certificate

active

07911293

ABSTRACT:
Techniques are disclosed that allow for programmable attenuation using thermometer code steps. By thermometer coding the attenuator structure, monotonicity is guaranteed or otherwise greatly improved, which eliminates instability problems with automatic gain control loops and without the need for compensation or trimming. In addition, the thermometer coding technique also greatly reduces phase discontinuity between adjacent gain states.

REFERENCES:
patent: 4412183 (1983-10-01), Brodie
patent: 5523712 (1996-06-01), Miyabe et al.
patent: 5880618 (1999-03-01), Koen
patent: 6229375 (2001-05-01), Koen
patent: 7253700 (2007-08-01), Chiu
patent: 7542812 (2009-06-01), Stroili et al.
patent: 7746969 (2010-06-01), Bryan et al.
patent: 2008/0272946 (2008-11-01), Melanson
patent: 2009/0040086 (2009-02-01), Hong et al.
patent: 2009/0072931 (2009-03-01), Chiu
Beaulieu, “12-bit Digital to Analog Converter”.
“MiniCircuits Digital Step Attenuators Offer Precision and Linearity” (AN-70-004), Nov. 5, 2007.
Kantasuwan et al, “Programmable RF Attenuator for On-Chip Loopback Test”.
Radulov et al, “A Binary-To-Thermometer Decoder with Redundant Switching Sequences”.
PCT Search Report and Written Opinion, PCT/US2010/038745, mailed Aug. 18, 2010.

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