Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2007-05-29
2009-02-03
Mottola, Steven J (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S283000, C330S295000
Reexamination Certificate
active
07486135
ABSTRACT:
A configurable LNA architecture for a multi-band RF receiver front end comprises a bank of LNAs, each optimized to a different frequency band, wherein each LNA has a configurable topology. Each LNA comprises a plurality of amplifier stages, each stage including an RF transistor having a different width. The transistor widths in adjacent amplifier stages may be binary weighted, or may be sized to achieve a constant gain step. By selectively enabling and disabling RF transistors, the effective transistor width of the LNA can be controlled with a fine granularity. A DAC generates a bias voltage with a small quantization step, additionally providing a fine granularity of gain control. The LNAs are protected by overvoltage protection circuits which shield transistors from a supply voltage in excess of their breakdown voltage. A source degeneration inductor presents a real resistance at inputs of the LNAs, without introducing thermal noise.
REFERENCES:
patent: 5710519 (1998-01-01), McClapin et al.
patent: 6049251 (2000-04-01), Meyer
patent: 6064265 (2000-05-01), Yun et al.
patent: 6127887 (2000-10-01), Cho
patent: 6218899 (2001-04-01), Ezell
patent: 6297694 (2001-10-01), Yamamoto
patent: 6396347 (2002-05-01), Lie et al.
patent: 6405025 (2002-06-01), Keski-Mattinen
patent: 6424222 (2002-07-01), Jeong et al.
patent: 6445251 (2002-09-01), Robinson
patent: 6472936 (2002-10-01), Jones
patent: 6586993 (2003-07-01), Macedo
patent: 6600371 (2003-07-01), Cali
patent: 6657498 (2003-12-01), Park et al.
patent: 6674337 (2004-01-01), Hashemi et al.
patent: 6768377 (2004-07-01), Macedo
patent: 6784738 (2004-08-01), Jin et al.
patent: 6798294 (2004-09-01), Kuiri
patent: 6806777 (2004-10-01), Franca-Neto
patent: 6819179 (2004-11-01), Raja et al.
patent: 6850753 (2005-02-01), Zhang et al.
patent: 6897729 (2005-05-01), Jin et al.
patent: 6919761 (2005-07-01), Cho et al.
patent: 6933779 (2005-08-01), Lee et al.
patent: 6977553 (2005-12-01), Jin et al.
patent: 7023272 (2006-04-01), Hung et al.
patent: 7031691 (2006-04-01), Brederlow
patent: 7081791 (2006-07-01), Carpineto et al.
patent: 2005/0176399 (2005-08-01), Aparin
patent: 2005/0231290 (2005-10-01), Hung et al.
patent: 2005/0258896 (2005-11-01), Bardsley et al.
patent: 2006/0052124 (2006-03-01), Pottenger et al.
patent: 2006/0084469 (2006-04-01), Malone et al.
patent: 2006/0170502 (2006-08-01), Cha et al.
patent: 2006/0189286 (2006-08-01), Kyu et al.
patent: 2007/0001768 (2007-01-01), Kim et al.
patent: 2007/0007598 (2007-01-01), Woo et al.
patent: 2007/0021087 (2007-01-01), Turner
patent: 1693957 (2006-08-01), None
patent: 01/41302 (2001-06-01), None
patent: 2006/086127 (2006-08-01), None
Kawazoe, D. et al. “Reconfigurable CMOS Low Noise Amplifier for Self Compensation.” Proceedings of the 2006 IEEE International Symposium on Circuits and Systems (ISCAS 2006), May 21-24, 2006, pp. 3410-3413, Kos/Greece.
Pennisi, S. et al. “A New Design Approach for Variable-Gain Low Noise Amplifiers.” IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Jun. 11-13, 2000, pp. 139-142, Boston, USA.
Coats & Bennett P.L.L.C.
Mottola Steven J
Telefonaktiebolaget LM Ericsson (publ)
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