Communications: radio wave antennas – Antennas – Mesh – woven – braided or multiple strip
Reexamination Certificate
2006-04-20
2008-03-18
Mancuso, Huedung (Department: 2821)
Communications: radio wave antennas
Antennas
Mesh, woven, braided or multiple strip
Reexamination Certificate
active
07345651
ABSTRACT:
An antenna having excellent receiving sensitivity for radio waves of two or more different frequency bands is achieved with a relatively simple configuration using a single cord. The antenna of the present invention is made up of a single cord which has one end connected to a plug and includes at least one inductor inserted at a certain point of the cord. A length from one end to the other end of the cord and a length from the one end to a position where one of the inductors is connected are n/4 (n represents 1, 2, 3 or 4) of a wavelength at the center frequency of one of the two or more frequency bands or a frequency around the center frequency, and the at least one inductor has a self-resonant frequency matching with the center frequency of the frequency band corresponding to the length from the one end to the position where the inductor is connected or matching with a frequency around the center frequency.
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Mancuso Huedung
Matsushita Electric - Industrial Co., Ltd.
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