Amplifiers – With semiconductor amplifying device – Including gain control means
Reexamination Certificate
2006-08-29
2006-08-29
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including gain control means
C333S100000
Reexamination Certificate
active
07098737
ABSTRACT:
An amplifier comprises an amplifier circuit which comprises a first inductor as an impedance element for degeneration, and a control circuit which has a second inductor electro-magnetically connected to the first inductor, and changes a control current flowing through the second inductor to change an inductance value of the first inductor, thereby changing amplification characteristics of the amplifier circuit.
REFERENCES:
patent: 2334704 (1943-11-01), Hilferty
patent: 4580114 (1986-04-01), Upadhyayula
patent: 5912596 (1999-06-01), Ghoshal
patent: 5994985 (1999-11-01), Pehlke et al.
patent: 6121850 (2000-09-01), Ghoshal
patent: 6392490 (2002-05-01), Gramegna et al.
patent: 6642787 (2003-11-01), Souetinov et al.
patent: 6750727 (2004-06-01), Sutardja
patent: 7-320942 (1995-08-01), None
patent: 8-162331 (1996-06-01), None
patent: 2000-223317 (2000-08-01), None
Fong, “Dual-Bank High-Linearity Variable-Gain Low-Noise Amplifiers for Wireless Applications,” IEEE International Solid-State Circuits Conference (1999), pp. 224-225.
Zhang, G. et al., “New Broadband Tunable Monolithic Microwave Floating Active Inductor”, Electronic Letters, vol. 28, No. 1, pp. 78-81, Jan. 2, 1992.
Fujimoto Ryuichi
Itakura Tetsuro
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