Balanced lattice filter device
US7880566B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Apr 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/009
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A lattice-type filter circuit includes first and second balanced signal terminals; first and second balanced signal terminals; a first resonator connected to a series arm between the first balanced signal terminal on the input side and the first balanced signal terminal on the output side; a second resonator connected to a series arm between the second balanced signal terminal on the input side and the second balanced signal terminal on the output side; a first resonant circuit including impedance elements, being connected to a lattice arm between the first balanced signal terminal on the output side and the second balanced signal terminal on the input side; and a second resonant circuit including impedance elements, being connected to a lattice arm between the second balanced signal terminal on the output side and the first balanced signal terminal on the input side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.