Diplexer, and high-frequency switch and antenna duplexer using the same
US6975841B2 · kind B2 · utility
19Cited by
1References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2002 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | May 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/465
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A diplexer capable of passing signals of a high frequency band without being attenuated over a wide frequency band, and a high-frequency switch using the diplexer are provided. The diplexer includes a low-pass filter 82 having a parallel resonant circuit formed by a first capacitor C1 and a first inductor L1 and a serial resonant circuit formed by a second capacitor C2 and a second inductor L2. With this structure, two attenuation poles are provided in the low-pass filter 82. Thus, a passband of a high-pass filter 83 can be widened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.