Amplification circuit

Details Amplification circuit Amplification circuit

2007-04-24

2010-10-26

Choe, Henry K (Department: 2817)

Amplifiers

Combined with automatic amplifier disabling switch means

C330S12400D

Reexamination Certificate

active

07821334

ABSTRACT:
The present invention is aimed at realizing an amplifying circuit whose chip size is prevented from being significantly increased even if the number of compatible frequencies increases, and which has a wide dynamic range when it operates under a low voltage. The amplifying circuit includes a plurality of impedance converting circuits connected to each other by a switching circuit of a first type having a signal cutting-off function, a switching circuit of a second type connected to a path branched from an input side of the switching circuit of the first type, the switching circuit of the second type having a signal cutting-off function, amplifiers connected respectively to an output side of one of the impedance converting circuits in a final stage and to an output side of the switching circuit of the second type, and a control signal generating circuit for controlling connection/disconnection between said switching circuit of the first type and said switching circuit of the second type; wherein either one of the paths is selected to input a signal to one of the amplifiers.

REFERENCES:
patent: 6128479 (2000-10-01), Fitzpatrick et al.
patent: 7030691 (2006-04-01), Kim
patent: 7385445 (2008-06-01), Wright
patent: 7589588 (2009-09-01), Ohnishi et al.
patent: 04-167601 (1992-06-01), None
patent: 05-48440 (1993-06-01), None
patent: 07-079132 (1995-03-01), None
patent: 2001-244755 (2001-09-01), None
patent: 2002-051538 (2002-02-01), None
patent: 2002-368562 (2002-12-01), None
patent: 2003-037478 (2003-02-01), None
patent: 2003-142964 (2003-05-01), None
patent: 2003-168996 (2003-06-01), None
patent: 2003-243954 (2003-08-01), None
patent: 2005-159803 (2005-06-01), None
patent: 2006-087070 (2006-03-01), None
patent: 2005/048448 (2005-05-01), None
Zhiwei Xu et al., A Compact Dual-Band Direct-Conversion CMOS Transceiver for 802.11 a/b/g WLAN, ISSCC 2005 /Session 5/ WLAN Transceiver / 5.4, 2005, pp. 1-3.
John F. Dickson, On-Chip High-Voltage Generation in MNOS Integrated Circuits Using an Improved Voltage Multiplier Technique, IEEe Journal of Solid-State Circuits, vol. SC-11, No. 3, Jun. 1976, pp. 1-5.

Affiliated with

Also associated with

Rating

Amplification circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Amplification circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplification circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4149767