EP 0110479 B1 19880518 - DIRECTIVE THIN DOUBLE ANTENNA FOR MICROWAVES
Title (en)
DIRECTIVE THIN DOUBLE ANTENNA FOR MICROWAVES
Publication
Application
Priority
FR 8220290 A 19821203
Abstract (en)
[origin: US4591865A] The antenna is designed to radiate decimetric or centimetric waves according to an acute angle theta o capable of varying by several dozens of degrees. It has the shape of a rectangular parallelepiped having a thickness e, a length L and a width lt metal-plated over almost its entire surface and containing a material having a dielectric constant epsilon r. According to the invention only a band having a fixed width d has not been metal-plated, which band extends substantially in the center over a large face of the antenna, d being equal to several times e, the second large metal-plate face constituting the ground plane. A micro-strip line (26) which crosses the band and contains the antenna feedpoint (31) electrically interconnects the two metal-plated semi-surfaces (28, 29) defined by the non-plated band. The thickness e is of the order of that of a printed circuit board, the length L (L=N+za) is more than twice the wavelength lambda of the wave to be transmitted and the width lt(lt=l1+l2) is between 0.2 and 0.6 lambda .
IPC 1-7
IPC 8 full level
H01Q 1/38 (2006.01); H01Q 13/10 (2006.01)
CPC (source: EP US)
H01Q 1/38 (2013.01 - EP US); H01Q 13/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0110479 A1 19840613; EP 0110479 B1 19880518; DE 3376718 D1 19880623; FR 2537347 A1 19840608; FR 2537347 B1 19850927; US 4591865 A 19860527
DOCDB simple family (application)
EP 83201682 A 19831129; DE 3376718 T 19831129; FR 8220290 A 19821203; US 55650683 A 19831130