Dual frequency antenna feed with apertured channel
US5109232A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dual band feed arrangement for a microwave antenna provides microwave communication in a lower band and in a substantially widened upper band to provide simultaneous microwave communication for three signals. One signal in the lower band propagates between the outer and inner conductors of a coaxial waveguide in the TE.sub.11 coaxial mode, and two signals in the upper band propagate in the inner conductor in TE.sub.11 circular waveguide mode. A combiner, having a conically shaped section with a plurality of irises through its sidewall, is coupled to the coaxial waveguide to provide a transformation from the TE.sub.11 modes to the HE.sub.11 waveguide modes for each of the three signals. A dielectric rod extends from within the inner conductor and into the horn antenna for propagating the second signal out of and into the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.