Invention Grant
- Patent Title: Antenna device and door handle device
- Patent Title (中): 天线装置和门把手装置
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Application No.: US11661595Application Date: 2005-09-16
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Publication No.: US07679571B2Publication Date: 2010-03-16
- Inventor: Hisashi Inaba , Kiyokazu Ieda , Rikuo Hatano
- Applicant: Hisashi Inaba , Kiyokazu Ieda , Rikuo Hatano
- Applicant Address: JP Kariya-Shi, Aichi-Ken
- Assignee: Aisin Seiki Kabushiki Kaisha
- Current Assignee: Aisin Seiki Kabushiki Kaisha
- Current Assignee Address: JP Kariya-Shi, Aichi-Ken
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2004-282501 20040928
- International Application: PCT/JP2005/017188 WO 20050916
- International Announcement: WO2006/035623 WO 20060406
- Main IPC: H01Q1/32
- IPC: H01Q1/32
Abstract:
A transmission/reception antenna (21) comprises a core (31) and a coil (32) wound around the core (31). One of a plurality of core sheets (31a) constituting the core (31) is utilized as a sensor electrode (23). Conductors (33, 34) extending from the two ends of the coil (32) are connected to a transmission/reception drive circuit (22). The conductor (35) extending from a capacitance detector (24) is connected to one of the conductors (33, 34) extending between the coil (32) and the transmission/reception drive circuit (22). Consequently, the capacitance detector (24) is alternately connected to the sensor electrode (23) through a parasitic capacitance C1 generated between the coil (32) and the sensor electrode (23) (core sheet (31a)).
Public/Granted literature
- US20080100522A1 Antenna Device and Door Handle Device Public/Granted day:2008-05-01
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