Transmission line with left-hand characteristics including an interdigital capacitor with partially overlapping fingers
US8717125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | Mar 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P3/081
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is herein disclosed an interdigital capacitor, an inductor, and an LH transmission line and a coupler using the interdigital capacitor and the inductor. The interdigital capacitor comprises two finger sets which are substantially disposed in parallel with each other. Fingers of each finger set are overlapped at outer edges thereof with each other to thereby generate capacitance. The inductor is formed substantially spirally inside the transmission line, so that it can have a large inductance in a compact shape and can be used in a broad frequency band. The LH transmission line has a broad frequency band in a compact shape, which includes interdigital capacitors connected in series with each other and inductors connected in parallel with each other. In addition, the coupler employing the LH transmission line has an excellent couplability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.