Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2006-09-19
2006-09-19
Le, Hoanganh (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S906000, C343S841000
Reexamination Certificate
active
07109930
ABSTRACT:
An antenna coupling apparatus, an external-antenna connecting apparatus, and an onboard external-antenna connecting apparatus which inhibits unnecessary power emissions, reduces transmission loss, and offers high durability and high ease of operation. has an electromagnetic coupling element consisting of a conductor that is not in contact with a first antenna with respect to DC components and a ground conductor element consisting of a conductor that is not in contact with the first antenna with respect to DC components and in contact with a ground conductor with respect to DC components and reflecting the power transmitted or received by the first antenna toward the electromagnetic coupling element. An external-antenna connecting apparatus and an onboard external-antenna connecting apparatus have an electromagnetic coupling circuit in their bodies that electromagnetically couples the antenna of a portable radio terminal and an external antenna, with the external-antenna connecting apparatus and the onboard external-antenna connecting apparatus, being not in contact with the portable radio terminal with respect to DC components, when the portable radio terminal is secured in the bodies.
REFERENCES:
patent: 5532703 (1996-07-01), Stephens et al.
patent: 5557287 (1996-09-01), Pottala et al.
patent: 5668561 (1997-09-01), Perrotta et al.
patent: 5777585 (1998-07-01), Tsuda et al.
Kanayama Yoshiki
Kuroda Shin-ichi
Tsuda Shinichiro
Yamaura Tomoya
Le Hoang-anh
Maioli Jay H.
Sony Corporation
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