Antenna with built-in filter

Details Antenna with built-in filter Antenna with built-in filter

2007-02-20

2007-02-20

Dinh, Trinh (Department: 2821)

Communications: radio wave antennas

Antennas

Antenna components

C343S7000MS

Reexamination Certificate

active

10468809

ABSTRACT:
At least one filter block (25, 35, 45) is formed in a thin and flat dielectric multilayer structure (21) and fixed with radiation elements (2, 3). Each filter block includes at least one of a low-pass filter, a high-pass filter and a band-eliminating filter. On the surface (one major surface) side and/or the side face of the multilayer structure, at least one radiation element (2, 3) being connected with the filter block is provided and feeding parts (28, 38, 48) for supplying signal to the radiation elements are provided on the rear surface of the multilayer structure. Consequently, the antenna and the filter block are integrated and a small surface mountable antenna with a built-in filter of a structure such that signals are not mixed each other even when signals of a plurality of frequency bands are transmitted/received can be obtained.

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Chinese Office Action issued Nov. 11, 2005 for Application No. 02805194.7.
EPO Search Report mailed on Mar. 9, 2006.

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