Diplexer duplexer and two-channel mobile communications equipment
US6366564B1 · kind B1 · utility
30Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 26, 1998 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | May 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2007/386
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A diplexer employed in mobile communications equipment such mobile phones which can divide signals into two channels with a simple configuration without interfering the other band. In this diplexer, an inductor 105 is connected between a &pgr;-type three-stage one polar low-pass filter 115 and a common terminal 113 as a first matching circuit, and a capacitor 106A is connected between a one polar band-pass filter 116 and a common terminal 113 as a second matching circuit so that interference with the other band can be prevented and the higher harmonics can be sufficiently attenuated with simple configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.