Communications: radio wave antennas – Antennas – Antenna components
Patent
1997-01-16
1999-05-04
Le, Hoanganh
Communications: radio wave antennas
Antennas
Antenna components
343756, H01Q 138
Patent
active
059008474
ABSTRACT:
The radiation directivity of radio waves can be controlled more easily over a wider range by using the disclosed dielectric lens. A dielectric lens element having a curved surface is bonded to one of the surfaces of a laminate element in the shape of a flat plate in which a plurality of dielectric layers whose relative dielectric constants are different for adjacent layers are laminated. By controlling the distribution mode of the relative dielectric constants in the laminate element, the radiation directivity for the entire dielectric lens apparatus can be controlled; therefore, the radiation directivity can be controlled more easily over a wider range. A focal point may be positioned within or at the surface of the laminate element, and a signal processing circuit may be formed within and/or at the surface of the laminate element.
REFERENCES:
patent: 4755820 (1988-07-01), Backhouse et al.
patent: 5185613 (1993-02-01), Whatmore et al.
patent: 5455594 (1995-10-01), Blasing et al.
NTIS Tech Notes , Jan. 1 1991, p. 17/1,2 XP000383480 "Advertisement" European Search Report dated Apr. 18, 1997.
Higashi Kazutaka
Ishikawa Yohei
Saitoh Yasuaki
Yamada Hideaki
Le Hoang-anh
Murata Manufacturing Co. Ltd.
Nguyen Kimnhung
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