Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2007-07-31
2007-07-31
Le, Hoanganh (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S748000
Reexamination Certificate
active
10544139
ABSTRACT:
An antenna apparatus includes a minute loop antenna and at least one antenna element. The minute loop antenna is provided to be electromagnetically close to a dielectric substrate including a grounding conductor, has a predetermined number N of turns and a predetermined minute length, operates as a magnetic ideal dipole when a predetermined metal plate is located closely to the antenna apparatus, and operates as a current antenna when the metal plate is located apart from the antenna apparatus. The antenna element is connected to the minute loop antenna, and operates as a current antenna. In the antenna apparatus, one end of the antenna apparatus is connected to a feeding point, and another end of the antenna apparatus is connected to the grounding conductor of the dielectric substrate.
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Institute of Electronics and Communication Engineers of Japan (IECE) editor, “Antenna Engineering Handbook”, pp. 59-63, Ohm-sha Ltd., First Edition, issued on Oct. 30, 1980.
Horiike Yoshio
Matsumoto Takayuki
Yokoajiro Yoshiyuki
Yoshikawa Yoshishige
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