Communications: radio wave antennas – Antennas – Antenna with parasitic director
Reexamination Certificate
2007-10-23
2007-10-23
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Antenna with parasitic director
C343S7000MS, C343S834000, C343S742000
Reexamination Certificate
active
10929758
ABSTRACT:
When configuring a film antenna for receiving a circular polarized wave, at least one loop antenna is formed on a transparent plastic film and, at the same time, a non-powered element constituted by a wire-shaped conductor independent from the antenna conductor configuring the loop is arranged near this loop antenna. The non-powered element arranged on the side of the loop antenna is configured by a first part and a second part. The first part is made close to the loop antenna in a substantially parallel state. When a monopole antenna is used in place of the loop antenna, by combining this with a wire-shaped conductor orthogonal to this, it becomes possible to receive a circular polarized wave by a configuration providing a power transfer part between the two. It is also possible to configure a composite antenna by mounting another antenna on the transparent plastic film. This antenna can be used as an antenna of a navigation system.
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Nagao Koji
Ogino Kazushige
Takayama Kazuo
Tsuruta Katsuhiro
Umezawa Yoshio
Chen Shih-Chao
Christie Parker & Hale LLP
Fujitsu Ten Limited
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