High frequency filter and high frequency module equipped with same
US9859861B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2014 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Oct 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0085
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To provide a smaller-sized high frequency filter. In a high frequency filter according to an embodiment of the invention, two filter circuits each equipped with a first externally coupling capacitor having one end coupled to an input-output terminal, a wavelength shortening capacitor having one end coupled to other end of the externally coupling capacitor and having other end coupled to the ground potential, and a resonator having one end coupled to the other end of the externally coupling capacitor and the one end of the wavelength shortening capacitor, having other end coupled to the ground potential, and being formed of a distributed constant line. The two filter circuits are broadside-coupled to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.