アンテナ装置
    1.
    发明专利
    アンテナ装置 审中-公开

    公开(公告)号:JPWO2020027156A1

    公开(公告)日:2021-08-02

    申请号:JP2019029899

    申请日:2019-07-30

    摘要: 広い周波数範囲にわたって使用可能な小型軽量のアンテナ装置を提供する。 第1エレメントと第2エレメントとを略90度回転した状態で所定の間隔で対向させ、かつ、全体を所定の角度(例えば略45度)傾けて取付面に固定する。各エレメントは、給電点が接続される部位から互いに離れる方向に延伸する二つの腕部(101Aと102A、201Aと202B)を有する。

    TRANSMITTER-RECEIVER
    4.
    发明专利

    公开(公告)号:JPH11284426A

    公开(公告)日:1999-10-15

    申请号:JP8585698

    申请日:1998-03-31

    申请人: TDK CORP

    发明人: SAKO HIDEJI

    摘要: PROBLEM TO BE SOLVED: To obtain the transmitter-receiver that sets directivity in a desired direction, where the directivities are not in parallel by providing at least a variable directivity antenna to both sides of a reflector and connecting the variable directivity antennas to a feeding point. SOLUTION: In this transmitter-receiver, a desired distance is given between a dielectric body 1 and an antenna (d) and between the dielectric body 1 and an antenna (e) by placing a dielectric body 2 with a prescribed thickness to both sides of a conductive body 1. The antennas d, e whose longitudinal lengths differ are placed in pair on both sides of the reflectors to tilt the directivity and to emit a radio wave in directions not in parallel. More specifically, the longitudinal length of each antenna is selected depending on each wavelength of electromagnetic waves and the longitudinal length of the antenna of each side is made different to produce a desired directivity angle.

    INDUCTIVE RADIO ANTENNA
    8.
    发明专利

    公开(公告)号:JPS57129544A

    公开(公告)日:1982-08-11

    申请号:JP1514381

    申请日:1981-02-04

    申请人: HITACHI CABLE

    摘要: PURPOSE:To reduce the eddy current induced to a car body and to eliminate the error of detection for the position of a traveling object, by distributing plural small-sized antenna elements having a very small size compared with the line period and with a prescribed space secured between them in the communication of a traveling object. CONSTITUTION:Antenna elements 51-53 are arranged in an inductive radio line on which conductors 1-3 are arranged to form a repetitive structure of a prescribed period P so that the 3-phase sine wave voltage is induced by the movement of a traveling object. These elements 51-53 have a very small size compared with the period P and are arranged in a row toward the lengthwise direction of the line and with a P/12 space to be also connected in series with the same polarity of each element. Then the same current is flowed to each element from a transmitter 6, and the ratio of illumination intensity is set as 1/3 :1:1/ 3 . As a result, the 5th and 7th order higher harmonic waves can be annihilated.

    9.
    发明专利
    失效

    公开(公告)号:JPS5329547B2

    公开(公告)日:1978-08-22

    申请号:JP9769074

    申请日:1974-08-26

    IPC分类号: H01P5/08 H01Q11/02 H01Q13/24