Antenna

Details Antenna Antenna

1997-03-10

1999-02-23

Le, Hoanganh

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343770, 333219, 3332191, H01Q 1310, H01Q 1906

Patent

active

058749225

ABSTRACT:
An antenna having a high gain, of small-size, and capable of setting the radiation direction of electromagnetic waves in a desired direction. The antenna also allows electromagnetic waves to be radiated stably. The antenna has a first planar conductor shaped like a flat plate. Disposed on the first planar conductor is a bar-shaped dielectric strip having one end connected to a waveguide or a transmission circuit and the other end being an open end which does not reach the position of openings in a second covering planar conductor. The end surface of the open end of the dielectric strip is shaped like a flat surface, and a column-shaped dielectric resonator is disposed at the open end side on the extension axis of the dielectric strip. A surrounding member is provided around the side of the dielectric resonator so as to surround it with a space therebetween. Further, a second planar conductor is disposed so as to cover the top surfaces of the dielectric strip, the dielectric resonator and the surrounding member. The second planar conductor has two rectangular-shaped openings above the dielectric resonator so as to be parallel to the extension axis along the length direction of the dielectric strip and to a line symmetry of the strip.

REFERENCES:
patent: 5666094 (1997-09-01), Kato et al.
patent: 5770989 (1998-06-01), Ishikawa et al.

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