Loop antenna
AssigneeFujitsu Ten Limited
InventorKazushige Ogino
Life of this patent
Estimating the term…
Abstract
A loop antenna providing a reception performance equivalent to a patch antenna receiving a circularly polarized wave, simple in configuration, and kept low in cost, which forms a loop element and a parasitic element provided independently of this loop element on the same dielectric board to form an antenna element and sends or receives a circularly polarized wave by this antenna element, provides a metal plate parallel with or having a slight inclination with respect to the dielectric board, and sets this metal plate separated from the dielectric board by exactly a predetermined distance.
Claims17
A loop antenna sending or receiving a circularly polarized wave, provided with:
- an antenna element comprised of a loop element formed on a single surface and a parasitic element provided independent of the loop element on the same surface and
- a conductor surface parallel with or having a slight inclination from said surface provided near said surface.
An antenna system comprised of:
- a loop antenna having an antenna element comprised of a loop element and a parasitic element provided independently of said loop element on the same surface and sending or receiving a circularly polarized wave,
- an electronic apparatus processing a signal sent or received by the loop antenna,
- a cable connecting the loop antenna and said electronic apparatus, and
- a conductor surface parallel with or having a slight inclination from said loop antenna provided near said loop antenna.
A vehicle equipped with an antenna system comprised of a loop antenna having
- an antenna element comprised of a loop element and a parasitic element provided independently of said loop element on the same surface and sending and receiving a circularly polarized wave,
- an electronic apparatus for processing a signal sent or received by the loop antenna,
- a cable connecting the loop antenna and electronic apparatus, and
- a conductor surface parallel with or having a slight inclination from said loop antenna provided near said loop antenna.
Dependencies are inferred from the claim text.