Oscillators – L-c type oscillators
Reexamination Certificate
2007-12-05
2010-11-23
Kinkead, Arnold (Department: 2817)
Oscillators
L-c type oscillators
C331S03600C, C331S074000, C331S1170FE, C331S17700V, C331S187000, C455S077000, C455S260000
Reexamination Certificate
active
07839229
ABSTRACT:
The present invention provides a voltage-controlled oscillator operating from microwave frequencies to millimeter wave frequencies, which is capable of outputting a large power with an output impedance thereof being set up to a predetermined level at low power consumption, and a communication device using the same. The voltage-controlled oscillator includes: a differential alternating current generator including a resonator capable of varying resonant frequency according to an input control voltage, for generating a pair of differential alternating current each of which having the same frequency with the resonant frequency of the resonator yet being 180 degrees out of phase in mutual; a pair of transformers each of which having a primary inductor and a secondary inductor, for conducting the alternating current to the primary inductor; and an impedance-matching circuit connected to the secondary inductor of the transformers, wherein an output signal is outputted from the secondary inductors of the transformers.
REFERENCES:
patent: 4945317 (1990-07-01), Sato et al.
patent: 6140884 (2000-10-01), Harpham et al.
patent: 6151232 (2000-11-01), Furuhashi et al.
patent: 6429748 (2002-08-01), Nicholls et al.
patent: 6621363 (2003-09-01), Park et al.
patent: 7015768 (2006-03-01), Talwalkar
patent: 2003/0095458 (2003-05-01), Park et al.
patent: 2004/0164817 (2004-08-01), Nosaka
patent: 2004/0222861 (2004-11-01), Mondal et al.
patent: 2005/0176380 (2005-08-01), Okabe et al.
patent: 2005/0184820 (2005-08-01), Hung et al.
patent: 2006/0038628 (2006-02-01), Khannur
patent: 2006/0097811 (2006-05-01), Nakamura et al.
patent: 0 220 914 (1987-05-01), None
patent: 2 181 913 (1987-04-01), None
patent: 54-032954 (1979-03-01), None
patent: 62-168429 (1987-07-01), None
patent: 64-80112 (1989-03-01), None
patent: 03-006911 (1991-01-01), None
patent: 03-029504 (1991-02-01), None
patent: 11-346115 (1999-12-01), None
patent: 2003-168924 (2003-06-01), None
patent: 2006-115337 (2006-04-01), None
patent: 2006-135829 (2006-05-01), None
Hao Li et al., “Millimeter-Wave VCOs With Wide Tuning Range and Low Phase Noise, Fully Integrated in a SiGe Bipolar Production Technology” IEEE Journal of Solid-State Circuits, vol. 38, No. 2, Feb. 2003 pp. 184-191.
C. Lee et al., “SiGe BiCMOS 65-GHz BPSK Transmitter and 30 to 122 GHz LC-Varactor VCOs with up to 21% Tuning Range” 2004 IEEE CSIC Digest, pp. 179-182.
Hao Li et al., “Fully Integrated SiGe VCOs With Powerful Output Buffer for 77-GHz Automotive Radar Systems and Applications Around 100 GHz”, IEEE Journal of Solid-State Circuits, vol. 39, No. 10, Oct. 2004, pp. 1650-1658.
Masuda Toru
Nakamura Takahiro
Hitachi , Ltd.
Kinkead Arnold
Miles & Stockbridge P.C.
Tan Richard
LandOfFree
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