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Detail
Registered VARIABLE GAIN AMPLIFIER
- Inventors
- Han Seon-Ho, Yu Hyun Kyu
- Application No.
- 11497461 (2006.08.01)
- Publication No.
- 20070132513 (2007.06.14)
- Registration No.
- 7348849 (2008.03.25)
- Country
- UNITED STATES
- Project Code
- 05MB3400, H/W Reconfigurable SoC for Next Generation Intelligent Integrated Terminal, Cho Kyoung Ik
- Abstract
- A complementary metal oxide semiconductor (CMOS) variable gain amplifier has a wider decibel-linear gain variation characteristic with respect to a control voltage when a signal is amplified. The variable gain amplifier includes: a bias input circuit for supplying a current corresponding to a bias voltage; an operation region combination and feedback circuit connected to the bias input circuit and combining at least two amplifiers by feedback in response to a control voltage, each amplifier having a decibel-linear characteristic in saturation and triode regions of a complementary metal oxide semiconductor (CMOS); and a bias output circuit connected to the bias input circuit, and outputting bias current controlled by the operation region combination and feedback circuit.
- KSP Keywords
- Bias output, Bias voltage, Complementary metal-oxide-semiconductor(CMOS), Feedback Circuit, Gain variation, Linear characteristic, Metal-oxide(MOX), Operation Region, Variable gain amplifier, bias current, control voltage, metal oxide semiconductor, oxide semiconductor, variable gain, variation characteristic