Amplifiers – With amplifier bypass means
Reexamination Certificate
2010-04-13
2011-10-04
Choe, Henry (Department: 2817)
Amplifiers
With amplifier bypass means
C330S149000
Reexamination Certificate
active
08030998
ABSTRACT:
An exemplary embodiment of the feed forward amplifier replaces traditional distributed directional couplers, splitters, and delay lines. Moreover, an exemplary feed forward amplifier architecture combines active implementations of RF couplers, power splitters, and/or time delay elements in a novel fashion allowing for ultra-compact size and broadband performance. In an exemplary embodiment, a feed forward amplifier has a main amplifier path and an error amplifier path. The feed forward amplifier comprises a main amplifier in the main amplifier path, and at least one active vector generator in the error amplifier path. The at least one active vector generator is configured to adjust the phase and amplitude of an error amplifier path signal and an error amplifier is configured to receive the adjusted error amplifier path signal. Furthermore, the adjusted error amplifier path signal and an amplified signal are combined to form the output signal of the feed forward amplifier.
REFERENCES:
patent: 3119965 (1964-01-01), Phillips
patent: 4857777 (1989-08-01), Altes
patent: 4896374 (1990-01-01), Waugh et al.
patent: 4965602 (1990-10-01), Kahrilas et al.
patent: 4994773 (1991-02-01), Chen et al.
patent: 5270719 (1993-12-01), Roth
patent: 6061553 (2000-05-01), Matsuoka et al.
patent: 6232837 (2001-05-01), Yoo et al.
patent: 6326845 (2001-12-01), Miyaji et al.
patent: 7319345 (2008-01-01), Farjad-rad et al.
patent: 7355470 (2008-04-01), Sorrells et al.
patent: 7378902 (2008-05-01), Sorrells et al.
patent: 7408507 (2008-08-01), Paek et al.
patent: 7421036 (2008-09-01), Sorrells et al.
patent: 7620129 (2009-11-01), Sorrells et al.
patent: 7746764 (2010-06-01), Rawlins et al.
patent: 7750733 (2010-07-01), Sorrells et al.
patent: 7885682 (2011-02-01), Sorrells et al.
patent: 2002/0113648 (2002-08-01), Miyaji et al.
patent: 2003/0016085 (2003-01-01), Yamazaki
patent: 2003/0162566 (2003-08-01), Shapira et al.
patent: 2005/0113052 (2005-05-01), Rabinovich
patent: 2005/0151698 (2005-07-01), Mohamadi
patent: 2006/0170499 (2006-08-01), Rahman et al.
patent: 2007/0248186 (2007-10-01), Sorrells et al.
patent: 2007/0275674 (2007-11-01), Chien
patent: 2008/0129408 (2008-06-01), Nagaishi et al.
patent: 2009/0091384 (2009-04-01), Sorrells et al.
patent: 2010/0073085 (2010-03-01), Sorrells et al.
patent: 2010/0097138 (2010-04-01), Sorrells et al.
patent: 2010/0225389 (2010-09-01), Teetzel
patent: 0762660 (1997-03-01), None
patent: 1193861 (2002-04-01), None
patent: 2003168938 (2003-06-01), None
patent: WO9945609 (1999-08-01), None
patent: W00003456 (2000-01-01), None
patent: WO0241442 (2002-05-01), None
patent: WO03036756 (2003-05-01), None
International Search Report and Written Opinion dated Oct. 27, 2010, PCT/US10/030876, 8 pages.
International Search Report and Written Opinion dated Nov. 18, 2010, PCT/US10/30871, 10 pages.
International Search Report and Written Opinion dated Nov. 26, 2010, PCT/US10/30868, 10 pages.
International Search Report and Written Opinion dated Nov. 26, 2010, PCT/US10/30877, 10 pages.
Tokumitsu et al.—Active isolator, combiner, divider and magic-T as miniaturized function blocks dated Nov. 6, 1998.
International Search Report and Written Opinion dated Nov. 26, 2010, PCT/US10/30866, 8 pages.
Aminghasem Safarian et al., Distributed Active Power Combiners and Splitters for Multi-Antenna UWB.
Viallon et al. An Original SiGe Active Differential Output Power Splitter for Millimetre-wave Applications, 2003.
International Search Report and Written Opinion dated Nov. 26, 2010, PCT/US10/30892, 9 pages.
International Search Report and Written Opinion dated Nov. 26, 2010, PCT/US10/30872, 9 pages.
Hsiao Analysis of Interleaved Arrays of Nov. 1971.
International Search Report and Written Opinion dated Nov. 30, 2010, PCT/US10/30906, 11 pages.
International Search Report and Written Opinion dated Jul. 19, 2010,PCT US10/030881,149 pages.
International Search Report and Written Opinion dated Aug. 23, 2010, PCT/US2010/30864, 12 pages.
Kwang-Jin, Koh, Gabriel M. Rebeiz, 0.13-mu m CMOS phase shifters for X-, Ku, and K-band phased arrays, IEEE Journal of Solid State Circuits, 2007, 14 pages.
Kwang-Jin, Koh, Jason W. May, Gabriel M. Rebeiz A Q-Band (40-45 GHz) 16-Element Phased-Array Transmitter in 0.18-μm SiGe BiCMOS Technology, IEEE Radio Frequency Integrated Circuits Symposium, 2008, 4 pages.
Kwang-Jin, Koh, Gabriel M. Rebeiz, An X- and Ku-Band 8-Element Phased-Array Receiver in 0.18-μm SiGe BiCMOS Technology, IEEE Journal of Solid State Circuits, Jun. 2008, 12 pages.
Strassberg, Dan, “RF-vector-signal generator combines high throughput, low phase noise,” EDN, Oct. 6, 2009, 2 pp., UBM Electronics.
Zheng et al., “Full 360 degree Vector-Sum Phase-Shifter for Microwave System Applications,” IEEE Transactions on Circuits and Systems I: Regular Papers, Downloaded on Jul. 8, 2009, pp. 1-7.
Ayari et al., “Automatic Test Vector Generation for Mixed-Signal Circuits,” 1995, Ecole Polytechnique of the University of Montreal, 6 pages.
Choe Henry
Snell & Wilmer L.L.P.
ViaSat Inc.
LandOfFree
Active feed forward amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active feed forward amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active feed forward amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4277707