Antenna unit having a single antenna element and a periodic structure upper plate

An antenna unit consists of an EBG reflector, a single curl antenna supported at a central portion of the EBG reflector, and a periodic structure upper plate disposed apart from a principal surface of the EBG reflector by a predetermined distance. The EBG reflector includes a substrate having the pr...

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Bibliographic Details
Main Authors NAKANO HISAMATSU, YAMAUCHI JUNJI, ASANO YOICHI, UMETSU HIDEKAZU, MIYOSHI AKIRA
Format Patent
LanguageEnglish
Published 30.08.2007
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
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Summary:An antenna unit consists of an EBG reflector, a single curl antenna supported at a central portion of the EBG reflector, and a periodic structure upper plate disposed apart from a principal surface of the EBG reflector by a predetermined distance. The EBG reflector includes a substrate having the principal surface and (NxxNy) square patches which are printed on the principle surface of the substrate and which are arranged in a matrix fashion (lattice structure). The periodic structure upper plate consists of a film and (NxxNy) square patch-like conductors printed on the film. The (NxxNy) square patch-like conductors are disposed so as to oppose to the (NxxNy) square patches, respectively.
Bibliography:Application Number: US20070699815