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1. WO2000041269 - ANTENNA ARRANGEMENTS

Publication Number WO/2000/041269
Publication Date 13.07.2000
International Application No. PCT/GB1999/004406
International Filing Date 23.12.1999
IPC
H01Q 15/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
H01Q 19/06 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
19Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
06using refracting or diffracting devices, e.g. lens
CPC
H01Q 15/0013
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
15Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
0006Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
0013said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
H01Q 19/062
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
19Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
06using refracting or diffracting devices, e.g. lens
062for focusing
Applicants
  • MARCONI CASWELL LIMITED [GB/GB]; One Bruton Street London WIX 8AQ, GB (AllExceptUS)
  • HOLDEN, Anthony, James [GB/GB]; GB (UsOnly)
  • ROBBINS, David, James [GB/GB]; GB (UsOnly)
  • STEWART, William, James [GB/GB]; GB (UsOnly)
  • WILTSHIRE, Michael, Charles, Keogh [GB/GB]; GB (UsOnly)
  • PENDRY, John, Brian [GB/GB]; GB (UsOnly)
Inventors
  • HOLDEN, Anthony, James; GB
  • ROBBINS, David, James; GB
  • STEWART, William, James; GB
  • WILTSHIRE, Michael, Charles, Keogh; GB
  • PENDRY, John, Brian; GB
Agents
  • HOSTE, Colin, Francis; Marconi Intellectual Property Waterhouse Lane Chelmsford Essex CM1 2QX, GB
Priority Data
9900033.304.01.1999GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ANTENNA ARRANGEMENTS
(FR) AGENCEMENTS D'ANTENNE
Abstract
(EN)
The performance of a microwave antenna is improved by incorporating a fine wire dielectric material (16) which has a dielectric constant $g(e) of less than unity at microwave frequencies. The effect of the dielectric material (16) is to refract microwaves (20) so that the antenna (14) appears to have a larger aperture than that of its physical size. Furthermore, by selecting the transmission cut off frequency of the dielectric material, two antenna elements which are intended to operate within different frequency bands can be mounted one behind the other.
(FR)
Une amélioration a été apportée à une antenne hyperfréquence par incorporation d'un matériau (16) diélectrique filaire fin ayant une constante diélectrique $g(e) inférieure à une unité au niveau des hyperfréquences. L'effet du matériau (16) diélectrique est de réfracter les hyperfréquences (20) de sorte que l'antenne (14) semble avoir une plus grande ouverture que celle de sa taille physique. De plus, en sélectionnant la fréquence de coupure de transmission du matériau diélectrique, deux éléments d'antenne prévus pour fonctionner dans différentes bandes de fréquence peuvent être montés l'un derrière l'autre.
Other related publications
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