Radio frequency antenna feed structures having a coaxial waveguide and asymmetric septum
US6724277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Apr 1, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/161
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A waveguide feed structure having a coaxial transmission line. A conductive, planar septum is disposed in, and along a diameter of, the transmission line. A feed port is electrically coupled to the transmission line. The septum has a rear portion disposed proximate the feed port, such rear portion of the septum extending between the inner conductor and the outer conductor. The feed port and the rear portion of the septum are arranged to establish an electric field in the transmission line between the inner conductor and the outer conductor with a component substantially TE11 mode along a direction perpendicular to the planar septum. A forward portion of the septum is asymmetrically disposed with respect to said diameter in order to provide a gap between the inner conductor and the outer conductor, such gap establishing an electric field component within the transmission line having a TE11 component along said diameter of the transmission line parallel to the plane of the septum. The septum has a pair of distal ends. One of the ends is separated from a proximate portion of the outer conductor has a distance different from the separation between the other one of the pair of ends and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.