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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Balun apparatus including impedance transformer having transformation length

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H01P-005/10   
미국특허분류(USC) 343/859 ; 343/862 ; 343/864 ; 333/26
출원번호 US-0209811 (1994-03-11)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 80  인용 특허 : 0
초록

An electrical connection between a balanced circuit, such as a radio receiver and an unbalanced circuit, such as an antenna requires a balun. In a small electronic device such as a radiotelephone, a traditional balun is impractical because of the physical constraints. The balun function is performed by using a transmission line of minimum transverse dimensions and a predetermined length between the receiver and the antenna.

대표
청구항
▼

A radio communication device comprising: a balanced antenna having a first common mode source impedance and a first differential mode source impedance; an unbalanced radio receiver having a differential load impedance; and a two conductor transmission line directly connected between a terminal of the balanced antenna and a terminal of the unbalanced radio receiver, the transmission line having a predetermined length, a second common mode impedance and a second differential mode impedance, the first common mode impedance and the second common mode impedan...

이 특허를 인용한 특허 피인용횟수: 80

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