ANTENNA ASSEMBLY AND DOOR HANDLE UNIT

Title:

ANTENNA ASSEMBLY AND DOOR HANDLE UNIT

Document Type and Number:

WIPO Patent Application WO/2006/035623

Kind Code:

A1

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)).

Inventors:

INABA HISASHI (JP)
IEDA KIYOKAZU (JP)
HATANO RIKUO (JP)

Application Number:

PCT/JP2005/017188

Publication Date:

April 06, 2006

Filing Date:

September 16, 2005

Export Citation:

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Assignee:

AISIN SEIKI (JP)
INABA HISASHI (JP)
IEDA KIYOKAZU (JP)
HATANO RIKUO (JP)

International Classes:

G01B7/00; B60J5/04; B60R25/01; B60R25/24; E05B1/00; E05B81/78; E05B85/16; H01Q1/32; H01Q1/44; H01Q7/06; H01Q7/08

Domestic Patent References:

WO1999046784A1	1999-09-16
WO2004095636A1	2004-11-04

Foreign References:

JP2004027559A	2004-01-29
JPH0254415A	1990-02-23
JPH0269908A	1990-03-08
JP2003013628A	2003-01-15
US6768413B1	2004-07-27
US20030184489A1	2003-10-02
DE10163778A1	2003-01-23

Other References: