Commonwealth Scientific and Industrial Research Organisation

Stuart Gifford Hay

Trevor Stanley Bird

Stephen John Barker

Mark Andrew Sprey

Anthony Ross Forsyth

Christophe Jean-Marc Granet

Peter John Goss

Kenneth Charles Skinner

An antenna device including: a conductive ground sheet of a substantially planar form; and a series of spaced apart conductive patches arranged substantially in a plane parallel to the conductive ground plane; a series of conductive feed interconnections electromagnetically coupled to the spaced apart array of conductive patches.

Enhanced connected tiled array antenna

An antenna structure for the transmission or receipt of electromagnetic signals, the structure formed as a self complementary array having a series of high and low impedance patches, with predetermined low impedance patches interconnected to one another by an impedance matching amplifier network so as to provide self complementary properties.

Reconfigurable self complementary array

A method, an apparatus, and a computer program product for electromagnetically designing a shaped-reflector multibeam antenna () are disclosed. An initial configuration of the multibeam antenna () for given beam directions is provided of reflectors () shaped with an initial reflector shaping process () and feeds of an initial specification (). The initial reflector shaping process () is an iterative optimization process for increasing the focusing of optical rays incident on the multibeam antenna from the given beam directions (). A second iterative optimizing process consisting of optimizing () radiation patterns of feeds (A-D) and optimizing () surface shapes and sizes of reflectors () is used to reduce beam spillover, improve beam shapes and obtain beams with gain radiation patterns within required upper and lower bounds.

Shaped-reflector multibeam antennas

Multibeam antenna

Growing community of inventors

Kogarah Bay, Australia

Stuart Gifford Hay