[특허]Body coupled antenna system and personal locator unit utilizing same

[미국특허] Body coupled antenna system and personal locator unit utilizing same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G08B-001/08
출원번호	US-0803338 (2010-06-24)
등록번호	US-8350695 (2013-01-08)
발명자 / 주소	Loen, Andrew E.
출원인 / 주소	LoJack Operating Company, LP
대리인 / 주소	Goodwin Procter LLP
인용정보	피인용 횟수 : 1 인용 특허 : 43

초록 ▼

A body coupled antenna system usable in a personal locator unit includes an antenna element for connection to an RF circuit; a coupling plate for conductively coupling to an adjacent body for broadening the tuning frequency and reducing the loading sensitivity; a first capacitance interconnected between the coupling plate and the antenna element; and a second capacitance interconnected between the coupling plate and the RF circuit; the first and second capacitances being set to restore a predetermined matching impedance level while maintaining the broadened tuning frequency.

대표청구항 ▼

1. A body coupled antenna system comprising: an antenna element for connection to an RF circuit;a coupling plate for conductively coupling to an adjacent body for broadening a tuning frequency and reducing a loading sensitivity;a first capacitance interconnected between said coupling plate and said antenna element; anda second capacitance interconnected between the coupling plate and the RF circuit;said first and second capacitances being set to restore a predetermined matching impedance level While maintaining the broadened tuning frequency. 2. The body coupled antenna system of claim 1 in ich said antenna element includes a helical conductor. 3. The body coupled antenna system of claim 1 in which said coupling plate is capacitively coupled to the adjacent body. 4. The body coupled antenna system of claim 1 in which said first and second capacitances are adjustable. 5. The body coupled antenna system of claim 1 in which said body is a human body. 6. The body coupled antenna system of claim 5 in which said antenna system is worn on the body wrist. 7. The body coupled antenna system of claim 1 in which said antenna system is contained in a housing adapted to be mounted on the body. 8. The body coupled antenna system of claim 1 in which said coupling plate is separated by a gap from said body. 9. The body coupled antenna system of claim 1 in which said RF circuit includes a transmitter circuit. 10. The body coupled antenna system of claim 1 in which said RF circuit includes a transmitter and receiver circuits. 11. The body coupled antenna system of claim 7 in which said RF circuit is contained in said housing. 12. The body coupled antenna system of claim 7 in which said housing includes a power supply for the RF circuit. 13. The body coupled antenna system of claim 1 in which said RF circuit includes a receiver circuit. 14. A personal locator unit comprising: a body coupled antenna system;an RF circuit;a housing for said body coupled antenna system and said RF circuit;said body coupled antenna system including an antenna element for connection to the RF circuit;a coupling plate for conductively coupling to an adjacent body for broadening a tuning frequency and reducing a loading sensitivity;a first capacitance interconnected between said coupling plate and said antenna element; and a second capacitance interconnected between the coupling plate and the RF circuit; said first and second capacitances being set to restore a predetermined matching impedance level while maintaining the broadened tuning frequency. 15. The personal locator unit of claim 14 in which said RF circuit includes a transmitter circuit. 16. The personal locator unit of claim 14 in which said RF circuit includes a transmitter circuit and receiver circuit. 17. The personal locator unit of claim 16 in which said RF circuit includes a decode circuit responsive to said receiver circuit, for identifying a personal identification code associated with the instant personal locator unit and a switch circuit for enabling said transmitter circuit. 18. The personal locator unit of claim 14 in which said transmitter circuit transmits at least said personal identifier code associated with the instant personal locator unit. 19. The personal locator unit of claim 14 in which said RF circuit includes a power supply. 20. The personal locator unit of claim 14 in which said housing includes a device for carrying said housing on the body. 21. The personal locator unit of claim 20 in which said device includes a strap. 22. The personal locator unit of claim 14 in which said coupling plate is capacitively coupled to the adjacent body. 23. The personal locator unit of claim 14 in which said coupling plate is separated by a gap from said body. 24. The personal locator unit of claim 14 in which said RF circuit includes a receiver circuit.

이 특허에 인용된 특허 (43) 인용/피인용 타임라인 분석

Gaskill Garold B. (Tualatin OR) Miles Michael (Aloha OR) Schrock Clifford B. (Portland OR), Adjustable watchband with embedded antenna.
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Hama Norio (Suwa JPX), Antenna and miniature portable wireless transceiver.
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Nomura, Keiichi; Someya, Kaoru, Antenna and wristwatch equipped with antenna.
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Fujisawa Teruhiko (Suwa JPX) Ito Koichi (Chiba JPX), Antenna apparatus for transceiver.
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Hama Norio (Suwa JPX), Antenna circuit and wrist radio instrument.
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Maeda, Noboru; Ohoka, Shinji; Inoue, Goro, Antenna for portable radio communication device and method of transmitting radio signal.
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Kita Kazunori,JPX, Antenna for use with a portable radio apparatus.
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Tan William (Lantana FL), Antenna system for a wrist carried paging receiver.
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Matsui Shigeru (Suwa JPX) Imai Taeko (Suwa JPX), Clasp to join straps containing an antenna for a portable information device.
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Van Voorhies Kurt Louis, Contrawound toroidal helical antenna.
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Parsche, Francis; Killen, William D.; Pike, Randy T., Efficient loop antenna of reduced diameter.
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Akahane Fumiaki (Suwa JPX) Miyashita Kazunori (Suwa JPX), Electronic device wristband.
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Robitaille Michael A. (Bloomfield CT), Expansion band antenna for a wristwatch application.
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Ma John Y. (499 Dundee Ave. Milpitas CA 90535), Ferrite-core antenna.
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Tay Yew S. (Plantation FL) Garay Oscar (Coral Springs FL) Llorente Jose A. (North Lauderdale FL), Folded dipole antenna.
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Kneisel Thomas F. (Davie FL) Balzano Quirino (Plantation FL) Freeburg Thomas A. (Arlington Heights IL), Homotropic antenna system for portable radio.
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Harano Nobuya,JPX, Loop antenna.
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Staufer Hans,CHX ; Burri Michel,CHX, Loop antenna.
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Owen Jeffrey R., Loop antenna with reduced electrical field sensitivity.
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Schuh David N. (Calgary CAX), Method and apparatus for analyzing the operating condition of a machine.
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Carr Francis (Kanata CAX), Miniature antenna with separate sequentially wound windings.
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Scholz Frederick J. (Fremont CA), Miniature radio transceiver antenna.
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Caci Joseph D. (Lantana FL) Ponce de Leon Lorenzo A. (Lake Worth FL), Optimally grounded small loop antenna.
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Bisig,Martin, Optimization of a loop antenna geometry embedded in a wristband portion of a watch.
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Turner,James Benjamin; Williams,Jason Lane, Parallel loop antennas for a mobile electronic device.
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Nalbandian, Vahakn, Planar tunable microstrip antenna for HF and VHF frequencies.
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Hately Maurice Clifford,GBX ; Kabbary Fathi Mohammed,EGX, Radio antenna.
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Matai Masahiro (Tokyo JPX), Radio pager with high gain antenna.
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Tan William (Lantana FL) Kurcbart Robert (Boca Raton FL), Reactance buffered loop antenna and method for making the same.
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Teodoridis Viron (Hauterive CHX) Joss Bernard (Chzard CHX), Timepiece including an antenna.
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Hama Norio (Suwa JPX), Variable size antenna device having resonance frequency compensation.
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Bisig,Martin, Vhf wave receiver antenna housed in a wristband of a portable electronic device.
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Kudoh Kazuhiro (Tokyo JPX) Nishiyama Toshirou (Shizuoka JPX) Anma Sadayuki (Shizuoka JPX), Watch type paging receiver.
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Yamamori Takeshi,JPX, Wrist band antenna.
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Gehring Mark R. (Portland OR) Suter Richard R. (Beaverton OR) Ragan Lawrence H. (Richardson TX), Wrist band for wrist-mounted radio with an uninsulated buckle.
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He Zhujun,JPX ; Saruwatari Tomozumi,JPX ; Terasawa Dai,JPX, Wrist band with embedded antenna.
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Yamamori Takeshi,JPX, Wrist watch-style pager.
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Hama Norio (Suwa JPX), Wrist-mounted-type antenna device and apparatus having the antenna device.
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Fujisawa Teruhiko (Nagano-ken JPX), Wrist-type wireless instrument and antenna apparatus.
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Wakabayashi Teruhiko,JPX, Wristband having embedded electrically conductive members for a wrist-mountable type electronic device.
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Kurcbart Robert (Boca Raton FL), Wristband with loop antenna.
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Matsui Shigeru (Nagano JPX), Wristwatch band with radio antenna.
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David Barras CH, Wristwatch with capacitive coupling.
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이 특허를 인용한 특허 (1) 인용/피인용 타임라인 분석

Vance, Scott L., Antennas for body-worn wireless electronic devices.
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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

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[미국특허] Body coupled antenna system and personal locator unit utilizing same 원문보기