摘要:
A wire antenna for circularly polarized wave has a loop conductor that is composed of an outer element 3a of one turn and an inner element 3b of three-fourths turn. The antenna has an overall length of approximately 7/4 wave length and is a 7/4 turn loop of a rectangular shape with opposite ends separated. Feeding terminals 2a and 2b as feeding points are positioned at one turn point of the loop conductor.
摘要:
A microstrip antenna comprises a dielectric plate having a thickness to be sufficiently shorter than a free space wavelength, a rectangular radiation conductive plate member mounted on one surface of the dielectric plate and set to be constructed that each side ranges from 1/4 of guide wavelength through 1/2 of guide wavelength, and a pair of opposed parts each of which is extended from each side of the rectangular radiation conductive plate member and each side of parts is less than 1/4 of guide wavelength.
摘要:
A vehicle-mounted communication device includes a non-directional antenna provided at a vehicle and having a directional characteristic in all directions uniformly in a horizontal plane, at least one of directional antennas provided at the vehicle and having a directional characteristic in a specific direction, an antenna switching portion switching so as to be connected to one of the non-directional antenna and the directional antenna on the basis of information to be sent in a case where the information is sent from the vehicle and switching so as to be connected to one of the non-directional antenna and the directional antenna on the basis of information to be received in a case where the information transmitted through the air is received.
摘要:
A technique for realizing effective transmission between a door handle and a vehicle door is provided. The present invention teaches an electromagnetic coupling device electromagnetically connecting a door handle side circuit 110 of a door handle 100 with a door main body side circuit 210 of a door main body. This electromagnetic coupling device comprises a door handle side coupling unit 119, a door main body side coupling unit 161, a door handle side coupling unit 119, a handle side support unit 139 that supports the door handle 100, and a connector body 169 that supports the door main body side coupling unit 161 in a vehicle door main body 200. The door handle side coupling unit 119 is electromagnetically coupled with the door main body side coupling unit 161 without making contact therewith. At least one of the handle side support unit 139 and the connector body 169 restricts the relative movement, caused by rotation of the door handle 100, of the door handle side coupling unit 119 and the door main body side coupling unit 161.
摘要:
A door handle device capable of operating a door opening/closing mechanism of a vehicle is disclosed. The door handle device includes a support member, door handle, lock detection electrode, and capacitance sensor. The door handle includes a first end, second end, pivot portion, and operation portion. The capacitance sensor detects issuance of a door lock command from a change in capacitance between an outer panel and the lock detection electrode. The door handle includes a first handle case and second handle case, which covers the first handle case. The lock detection electrode is arranged proximal to and facing toward an inner surface of an upper wall or lower wall of the second handle case. The lock detection electrode is encompassed by a waterproof elastic body.
摘要:
A door handle apparatus for a vehicle includes a door handle adapted to be provided at a vehicle exterior of a vehicle door and operated in order to open/close the vehicle door, a sensing electrode provided inside of an upper-outer surface of the door handle, a sensor for detecting a user approaching the sensing electrode on the basis of a variation of an electric capacitance generated by the sensing electrode, controlling device for controlling the vehicle door so as to be locked/unlocked on the basis of information detected by the sensor and water-removing device provided on the upper-outer surface of the door handle in order to remove water retained in the vicinity of the sensing electrode.
摘要:
An antenna device includes a core portion made of magnetic material, a wire coiled around the core portion leaving a leading end portion by a predetermined length, a case holding the core portion on which the wire is coiled and fixed on a body of a vehicle, and an elastic member provided between the core portion and the case for holding the core portion relative to the case.
摘要:
A human body detecting device includes a door handle provided on an outer panel, a first sensor electrode provided on the obverse side of the door handle, and a second sensor electrode provided on the reverse side of the door handle. The human body is detected in response to variation of capacitance between the outer panel and two sensor electrodes.
摘要:
A door handle apparatus includes a handle body attached to a door, a cover made of resin attached to the handle body and including a design layer decorated metallic like color tone, an antenna portion attached to a space formed between the handle body and the cover and having at least one of transmitting function and receiving function, and a metallic microparticle paint layer included in the design layer of the cover and formed by depositing metallic miroparticles by painting.
摘要:
To provide a loop antenna device which inhibits the unnecessary radiation of the electric wave and which can increase the sending speed of data placed on the electric wave. The first loop antenna 14 includes the coil L11 and the resonant capacitor C1 and constitutes a series resonant circuit in which the oscillator is connected in series to the coil L11 and the resonant capacitor C1. The second loop antenna 15 includes the coil L2 and the resonant capacitor C2 which are connected each other in parallel and constitutes a parallel resonant circuit. The second loop antenna 15 is magnetically connected to the first loop antenna 14 via the link coil L12. The switching elements 14, 15 are connected to the first and second loop antennas 14, 15 and the damping is performed to the resonant circuits of the antennas 14, 15 when the switching elements 18, 19 become OFF condition by the control signal from the controller 9.