High pass filter
US10784839B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Dec 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/1766
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high pass filter includes: a first resonant circuit including an inductor and a capacitor in parallel between first and second terminals; a second resonant circuit including an inductor and a capacitor in series between a first end of the first resonant circuit and a ground; a third resonant circuit including an inductor and a capacitor in series between a second end of the first resonant circuit and the ground; a fourth resonant circuit disposed between the first end of the first resonant circuit and the first terminal, and including a first acoustic resonator; and a fifth resonant circuit disposed between the second end of the first resonant circuit and the second terminal, and including a second acoustic resonator. Attenuation regions respectively formed by the first, second, and third resonant circuits are arranged in lower frequency regions than attenuation regions respectively formed by the fourth and fifth resonant circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.