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1. (WO1991009433) BROADBAND CIRCULAR PHASED ARRAY ANTENNA
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/009433 International Application No.: PCT/US1990/007425
Publication Date: 27.06.1991 International Filing Date: 12.12.1990
Chapter 2 Demand Filed: 26.06.1991
IPC:
H01Q 3/22 (2006.01) ,H01Q 3/24 (2006.01) ,H01Q 3/26 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
3
Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system
22
varying the orientation in accordance with variation of frequency of radiated wave
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
3
Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system
24
varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
3
Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system
26
varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
Applicants:
ALLIED-SIGNAL INC. [US/US]; Law Department (C.A. McNally) P.O. Box 2245R Morristown, NJ 07962-2245, US
Inventors:
SINSKI, Allen, Isaac; US
ACORACI, Joseph, Henry; US
WISCHHUSEN, Carl, Brian; US
Agent:
MASSUNG, Howard, G.; Allied-Signal Inc. Law Dept. (C.A. McNally) 101 Columbia Road P.O. Box 2245 Morristown, NJ 07962-2245, US
Priority Data:
452,45318.12.1989US
Title (EN) BROADBAND CIRCULAR PHASED ARRAY ANTENNA
(FR) RESEAU D'ANTENNES EN PHASE CIRCULAIRE A LARGE BANDE
Abstract:
(EN) An apparatus and method for generating a directional beam for radiating or receiving electromagnetic signals having a constant beamwidth over a predetermined frequency range has been described incorporating a circular array antenna, a Butler matrix, a plurality of phase shifters, a plurality of transmission line lengths, and a power divider. The invention overcomes the problem of constant beamwidth over a predetermined frequency range such as one and one half octaves.
(FR) Appareil et procédé produisant un faisceau directionnel permettant d'émettre ou de recevoir des signaux électromagnétiques, présentant une largeur de faisceau constante sur une plage de fréquence prédéterminée, comprenant un réseau circulaire d'antennes, une matrice Butler, une pluralité de déphaseurs, une pluralité de longueurs de lignes de transmission, ainsi qu'un diviseur de puissance. L'invention résout le problème de la largeur de faisceau constante sur une plage de fréquence prédéterminée, par exemple 1,5 octaves.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0506838JPH05500296CA2068733