Amplifier circuit having adjustable gain

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12113495
APP PUB NO 20230031137A1
SERIAL NO

17499831

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An amplifier circuit having an adjustable gain is provided. The amplifier circuit includes an input terminal, an output terminal, an amplifier, and an attenuation circuit. The input terminal receives an input signal, which is in turn received by an input terminal of the amplifier. An output terminal of the amplifier outputs the input signal that is amplified. The attenuation circuit is coupled between the output terminal of the amplifier and the output terminal to provide a plurality of attenuation to the input signal that is amplified and generate a first attenuation signal, or between the input terminal and the output terminal to provide the plurality of attenuations to the input signal and generate a second attenuation signal. A difference between an impedance value of the input terminal of the attenuation circuit and an impedance value of the output terminal of the attenuation circuit is within a predetermined range.

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Patent Owner(s)

Patent OwnerAddress
RICHWAVE TECHNOLOGY CORP3F NO 1 ALLEY 20 LANE 407 SECTION 2 TIDING BLVD NEIHU DISTRICT TAIPEI CITY

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Chih-Sheng Taipei, TW 110 193
Hsu, Ching-Wen Taipei, TW 16 5

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