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Antenna feeder line, and antenna module provided with the antenna feeder line

  • US 6,359,590 B2
  • Filed: 05/25/2001
  • Issued: 03/19/2002
  • Est. Priority Date: 05/26/2000
  • Status: Active Grant
First Claim
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1. An antenna feeder line comprising:

  • a dielectric substrate composed of a lamination of a plurality of dielectric layers;

    a first main conductor layer formed on one surface of the dielectric substrate;

    a second main conductor layer formed on the other surface of the dielectric substrate;

    two through conductor groups in two rows formed within the dielectric substrate, each of the two through conductor groups being composed of a plurality of through conductors electrically connecting the first main conductor layer and the second main conductor layer at predetermined intervals; and

    sub conductor layers for electrically connecting the through conductor groups, interposed between the dielectric layers, wherein the first main conductor layer, the second main conductor layer, the two through conductor groups and the sub conductor layers form a dielectric waveguide line where a high-frequency signal is transmitted through a transmission area surrounded by the first main conductor layer, the second main conductor layer, the through conductor groups and the sub conductor layers;

    a conductor non-formed portion is provided in the first main conductor layer of the dielectric waveguide line, the high-frequency signal is fed to an antenna device disposed above the conductor non-formed portion, through the conductor non-formed portion; and

    a grounding conductor for electrically connecting the first and second main conductor layers constituting H surfaces is disposed in a position which is perpendicular to a signal transmission direction and at a distance substantially not more than ½

    a distance between the side surfaces constituting E surfaces of the dielectric waveguide line from the side surfaces, within a distance substantially the same as a wavelength of the high-frequency signal from the conductor non-formed portion to a high-frequency signal input side or a side opposite thereto.

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