Low-noise amplifier circuit and receiving system

Details Low-noise amplifier circuit and receiving system Low-noise amplifier circuit and receiving system

2006-08-22

2010-11-16

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

C330S302000, C330S253000

Reexamination Certificate

active

07834704

ABSTRACT:
In a broadband low-noise amplifier circuit to be used in a multichannel reception system, a capacitance of a variable capacitor (9) is controlled by a resonance frequency control circuit (4) so that a resonance frequency of a load unit (2) comprising the variable capacitor (9) and an inductor (10) matches a desired RF signal frequency. Therefore, high gain and broadband can be realized at the same time without increasing power consumption, and consequently, a reception system having reduced power consumption and high sensitivity for all channels can be realized.

REFERENCES:
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patent: 2004/0212741 (2004-10-01), Hijikata et al.
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patent: WO02/080357 (2002-10-01), None
Lee, Thomas H., “The Design of CMOS Radio-Frequency Integrated Circuits,”Cambridge University Press(1998) pp. 178-222.
Razavi, Behzad, “RF microelectronics,” (Mar. 2002) pp. 47-50.

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