Multi-band filter system for wireless communication receiver
US6466768B1 · kind B1 · utility
37Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1999 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jun 11, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/406
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A filter system comprising three or more filters, each having different passbands, and an impedance adjusting network coupled between a filter system ports and each of the ports of at least two of the filters to adjust the port impedances of the filters coupled to the network. The adjusted port impedance of each filter at a frequency representative of at least one of the other filters coupled to the network is at a non-loading level. In one embodiment, the filter system is configured for use in a wireless communication receiver and/or handset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.