TM mode evanescent waveguide filter
US8022792B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 29, 2008 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Oct 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/207
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Waveguide filters utilizing the TM modes in an evanescent waveguide are provided. The Q of such filters surpasses any evanescent, dual and triple mode filters in propagating or evanescent waveguides. The waveguide filter in accordance with the present invention features a small size, as well as ease and simplicity in its manufacture when compared with conventional filters. Filters of exceptionally high Q and very low loss, when compared to conventional filters, can be obtained by employing TM modes in an evanescent waveguide. The TM mode evanescent filter has a higher Q than either the evanescent TE mode standard filter of a single mode propagating waveguide (TM or TE) or even the dual or triple mode filters in evanescent or propagating waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.