TIATransimpedance Amplifier TIA with Tunable Input Resistance

An electronic device comprises a radio circuit unit having a baseband processor, a transceiver, and an antenna. The transceiver includes a mixer which outputs signals to a trans-impedance amplifier. The mixer has an output impedance which changes in accordance with an operating frequency. An adjusta...

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Bibliographic Details
Main Authors WOO SANG HYUN, MRUGALLA FLORIAN
Format Patent
LanguageEnglish
Korean
Published 25.01.2023
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Summary:An electronic device comprises a radio circuit unit having a baseband processor, a transceiver, and an antenna. The transceiver includes a mixer which outputs signals to a trans-impedance amplifier. The mixer has an output impedance which changes in accordance with an operating frequency. An adjustable resistance may be coupled to an input part of the trans-impedance amplifier. A control circuit can tune the adjustable resistance to compensate for changes in the output impedance of the mixer as the transceiver operates over a wide range of frequencies. 전자 디바이스는 기저대역 프로세서, 송수신기, 및 안테나가 있는 무선 회로부를 포함할 수 있다. 송수신기는 트랜스임피던스 증폭기에 신호들을 출력하는 믹서를 포함할 수 있다. 믹서는 동작 주파수에 따라 변화하는 출력 임피던스를 갖는다. 트랜스임피던스 증폭기의 입력부에 조정가능 저항이 결합될 수 있다. 제어 회로는 송수신기가 광범위한 주파수들에 걸쳐 동작함에 따라 믹서의 출력 임피던스의 변화들을 보상하기 위해 조정가능 저항을 동조시킬 수 있다.
Bibliography:Application Number: KR20220068866