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Dual band notch antenna for portable radiotelephones

机译:便携式无线电话的双频段陷波天线

摘要

An improved antenna configuration is disclosed for a fully duplex portable radiotelephone that is normally operated in the nearly horizontal position next to the user's ear and mouth. A notch antenna is provided in the bottom portion of the portable radio transceiver parallel to the major longitudinal axis of the housing. The notch aperture is cut in the conductive radio housing at a transverse angle to the major face plane of the radiotelephone to form a notch antenna which radiates predominately vertically polarized E-field waves when the transceiver is positioned such that the major longitudinal axis of the radio is approximately 30 degrees to the horizontal. The notch is an effective quarter-wavelength long and is dual-fed from a pair of coaxial cable transmission lines near the shorted end of the notch.
机译:公开了一种用于全双工便携式无线电话的改进的天线结构,该无线电话通常在靠近用户的耳朵和嘴巴的几乎水平位置工作。在便携式无线电收发器的底部中,平行于外壳的长纵轴设置有一个切口天线。在与无线电话的主端面成横向角度的导电无线电外壳中切开缺口孔,以形成一个缺口天线,当将收发器放置在一定位置时,该天线会辐射出主要是垂直极化的电场波与水平面大约30度。槽口有效长度为四分之一波长,由槽口短端附近的一对同轴电缆传输线双馈。

著录项

  • 公开/公告号US4723305A

    专利类型

  • 公开/公告日1988-02-02

    原文格式PDF

  • 申请/专利权人 MOTOROLA INC.;

    申请/专利号US19860877069

  • 发明设计人 ROBERT A. GUNTHER;JAMES P. PHILLIPS;

    申请日1986-06-23

  • 分类号H04B1/40;

  • 国家 US

  • 入库时间 2022-08-22 06:49:30

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