Source: http://www.google.com/patents/US7761067?dq=6,910,205
Timestamp: 2017-12-17 15:59:23
Document Index: 698410055

Matched Legal Cases: ['art 11', 'art 11', 'art 11', 'art 11', 'art 16', 'art 11', 'art 11', 'art 11', 'art 11']

Patent US7761067 - Iterative filter circuit calibration - Google Patents
Apparatus, systems, and methods implementing techniques for calibrating a filter circuit. A comparator generates an output based on a filter output amplitude signal and a reference amplitude signal. A calibration logic unit receives the comparator output and produces a component code that is used by...http://www.google.com/patents/US7761067?utm_source=gb-gplus-sharePatent US7761067 - Iterative filter circuit calibration
Publication number US7761067 B1
Application number US 10/830,117
Also published as US9031527
Publication number 10830117, 830117, US 7761067 B1, US 7761067B1, US-B1-7761067, US7761067 B1, US7761067B1
Inventors King Chun Tsai, Sang Won Son, Wayne A. Loeb
Patent Citations (52), Non-Patent Citations (13), Referenced by (19), Classifications (19), Legal Events (2)
US 7761067 B1
the wireless transceiver is compliant with any of IEEE standards 802.11, 802.11x, 802.11b, 802.11e, 802.11g, 802.11h, 802.11i, 802.11n, and 802.16.
When a bandpass filter is implemented monolithically in an integrated circuit, a tradeoff typically exists between the quality factor of the bandpass filter and the tolerance of the bandpass filter to process variations. Conventional CMOS process variations for metal-insulator-metal capacitors can cause variations in capacitance density on the order of ±20% due to factors such as varying dielectric thickness and permittivity. A ±20% variation in capacitance density translates to roughly a ±10% variation in center frequency for a conventional LC tank circuit. As the quality factor of an LC tank circuit increases, the passband of the LC tank circuit grows narrower, and a narrower range of frequency is passed unattenuated. Accordingly, a 10% deviation from the desired center frequency can result in an unacceptably large filter attenuation at the desired center frequency.
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U.S. Classification 455/127.2, 455/266, 455/126, 455/114.2, 455/115.3, 455/62, 455/125
Cooperative Classification H04B1/30, H04B1/1638, H03J2200/10, H03H2210/012, H03H7/12, H03H2007/013, H03H2210/015, H04B1/0475
European Classification H04B1/04L, H03H7/12
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TSAI, KING CHUN;SON, SANG WON;LOEB, WAYNE A.;SIGNING DATES FROM 20040415 TO 20040416;REEL/FRAME:015260/0108
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARVELL SEMICONDUCTOR, INC.;REEL/FRAME:015262/0602