Loading patent…
AssigneesYokowo Co., Ltd., Ube Industries, Ltd.
InventorsRyo Horie, Mitsuhiro Suzuki, Shozaburo Kameda, Koichi Fukuda, Hiroshi Ichikawa, Ryuji Oyama
Estimating the term…
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.
An antenna with a built-in filter which passes a desired frequency band comprising:
An antenna with a built-in filter comprising:
A dielectric multilayer structure in which a plurality of dielectric sheets each having an electroconductive film thereon are laminated and fixed, wherein electroconductive films provided on upper and lower sides of a dielectric sheet are connected and a shield wall is formed in said dielectric multilayer structure in its thickness direction by forming a band-shaped via contact in said dielectric sheet.
Dependencies are inferred from the claim text.