Antenna with built-in filter
US7180473B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.