[특허]Transponder with reply frequency derived from frequency of received interrogation signal

Transponder with reply frequency derived from frequency of received interrogation signal 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04B-007/15
출원번호	US-0635066 (1990-12-28)
우선권정보	GB-0029322 (1989-12-29)
발명자 / 주소	Clarke David J. (Bramford CA GB2) Martin Edward A. (Sunnyvale CA)
출원인 / 주소	Schlumberger Industries Limited (Farnborough GB2 03)
인용정보	피인용 횟수 : 108 인용 특허 : 0

초록 ▼

A transponder includes a receiver for receiving a radio interrogation signal. The transponder also includes a phase locked loop decoder for deriving a reference signal from the received interrogation signal, and a radio transmitter for transmitting a transponder reply signal. The phase locked loop has an output which feeds the AC reference signal to the transmitter. The transmitter includes a frequency doubler which generates a transmitter radio frequency at double the frequency of the reference signal. The transmitter radio frequency is therefore controlled by the radio frequency of the interrogation signal. The phase locked loop includes a divide-by-N counter, where N is a predetermined integer parameter. The parameter N determines the derivation of the reference signal frequency from the interrogation signal frequency.

대표청구항 ▼

Transponder apparatus for transmitting a radio reply signal in response to a radio interrogation signal, comprising: (a) radio receiver means for receiving said radio interrogation signal, said radio receiver means including: (i) an antenna for receiving said radio interrogation signal; (ii) a mixer; and (iii) an intermediate frequency amplifier coupled to the output of the mixer; and (b) decoder means for deriving a reference signal from said radio interrogation signal, said decoder means being coupled to the output of the intermediate frequency amplifier and including: (i) an oscillator; (ii) phase locked loop means for controlling said oscillator to generate the reference signal at a frequency dependent on the frequency of received radio interrogation signal and offset therefrom by a predetermined offset value; and (c) radio transmitter means for transmitting a reply signal at a radio frequency derived from said reference signal but different from said radio interrogation frequency, said predetermined offset value being very much smaller than the radio interrogation frequency and the radio reply frequency, said mixer having inputs comprising said radio interrogation signal from said antenna and the output from said oscillator, whereby said mixer generates an intermediate frequency for application to said intermediate frequency amplifier, said phase locked loop further including a divide-by-N counter coupled to the output of the intermediate frequency amplifier and a phase/frequency detector, said phase/frequency detector having one input connected to the output from said divide-by-N counter and a second input connected to a clock circuit, the parameter N determining said predetermined offset value.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Transponder with reply frequency derived from frequency of received interrogation signal 원문보기

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Transponder with reply frequency derived from frequency of received interrogation signal 원문보기

초록 ▼

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연구과제 타임라인

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이 특허를 인용한 특허 (108)

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