ANTENNA SWITCH CIRCUIT WITH IMPROVED HARMONIC SUPPRESSION CHARACTERISTIC

According to an embodiment of the present invention, an antenna switch circuit comprises: a first switch circuit unit connected between an antenna port and a first signal port for transmitting and receiving a signal, and operated by a first gate signal; and a second switch circuit unit connected bet...

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Main Authors LIM, JONG MO, YOO, HYUN HWAN, NA, YOO SAM, YOO, HYUN JIN, KIM, YOO HWAN
Format Patent
LanguageEnglish
Korean
Published 13.04.2018
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Abstract According to an embodiment of the present invention, an antenna switch circuit comprises: a first switch circuit unit connected between an antenna port and a first signal port for transmitting and receiving a signal, and operated by a first gate signal; and a second switch circuit unit connected between the antenna port and a second signal port for transmitting and receiving the signal, and operated by a second gate signal. At least one of the first and second switch circuits includes: at least two first and second transistors connected in series between two ports at both sides; a first voltage distribution unit including first and second resistances connected in series between a source and a drain of the first transistor; and a first variable capacitor circuit unit connected between a body of the first transistor and the first voltage distribution unit, and having a capacitance varying by a voltage at both ends. 본 발명의 일 실시 예에 따른 안테나 스위치 회로는, 신호 송수신을 위한 제1 신호 포트와, 안테나 포트와의 사이에 접속되어, 제1 게이트 신호에 의해 동작되는 제1 스위치 회로부; 및 신호 송수신을 위한 제2 신호 포트와, 상기 안테나 포트와의 사이에 접속되어, 제2 게이트 신호에 의해 동작되는 제2 스위치 회로부; 를 포함하고, 상기 제1 및 제2 스위치 회로부중 적어도 하나는 양측 두 포트 사이에 직렬로 연결된 적어도 2개의 제1 및 제2 트랜지스터; 상기 제1 트랜지스터의 소스와 드레인 사이에 직렬로 접속된 제1 저항 및 제2 저항을 포함하는 제1 전압 분배부; 및 상기 제1 전압 분배부와 상기 제1 트랜지스터의 바디 사이에 접속되어, 양단의 전압에 따라 가변하는 커패시턴스를 갖는 제1 가변 커패시터 회로부; 를 포함한다.
AbstractList According to an embodiment of the present invention, an antenna switch circuit comprises: a first switch circuit unit connected between an antenna port and a first signal port for transmitting and receiving a signal, and operated by a first gate signal; and a second switch circuit unit connected between the antenna port and a second signal port for transmitting and receiving the signal, and operated by a second gate signal. At least one of the first and second switch circuits includes: at least two first and second transistors connected in series between two ports at both sides; a first voltage distribution unit including first and second resistances connected in series between a source and a drain of the first transistor; and a first variable capacitor circuit unit connected between a body of the first transistor and the first voltage distribution unit, and having a capacitance varying by a voltage at both ends. 본 발명의 일 실시 예에 따른 안테나 스위치 회로는, 신호 송수신을 위한 제1 신호 포트와, 안테나 포트와의 사이에 접속되어, 제1 게이트 신호에 의해 동작되는 제1 스위치 회로부; 및 신호 송수신을 위한 제2 신호 포트와, 상기 안테나 포트와의 사이에 접속되어, 제2 게이트 신호에 의해 동작되는 제2 스위치 회로부; 를 포함하고, 상기 제1 및 제2 스위치 회로부중 적어도 하나는 양측 두 포트 사이에 직렬로 연결된 적어도 2개의 제1 및 제2 트랜지스터; 상기 제1 트랜지스터의 소스와 드레인 사이에 직렬로 접속된 제1 저항 및 제2 저항을 포함하는 제1 전압 분배부; 및 상기 제1 전압 분배부와 상기 제1 트랜지스터의 바디 사이에 접속되어, 양단의 전압에 따라 가변하는 커패시턴스를 갖는 제1 가변 커패시터 회로부; 를 포함한다.
Author YOO, HYUN JIN
YOO, HYUN HWAN
LIM, JONG MO
KIM, YOO HWAN
NA, YOO SAM
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DocumentTitleAlternate 고조파 억제특성을 개선한 안테나 스위치 회로
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Snippet According to an embodiment of the present invention, an antenna switch circuit comprises: a first switch circuit unit connected between an antenna port and a...
SourceID epo
SourceType Open Access Repository
SubjectTerms BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PULSE TECHNIQUE
TRANSMISSION
Title ANTENNA SWITCH CIRCUIT WITH IMPROVED HARMONIC SUPPRESSION CHARACTERISTIC
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