Antenna feed and a reflector antenna system and a low noise (lnb) receiver, both with such an antenna feed
US6549173B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2000 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Nov 30, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/13
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention relates to antenna feeds (10, 30, 70, 78, 94) for use in linear or circularly polarized systems. In one embodiment of the invention, a cross-type antenna feed (30) comprises a cylindrical metal waveguide housing (12) and a cross-type metal feed body (32) coupled to the front of the waveguide housing (12). The feed body (32) has four peripherally spaced corrugated arm portions (34) arranged in a mutually orthogonal relationship, where the arm portions (34) extend radially outwardly from a longitudinal axis (16) of the feed body (32). Ridges (36) on each arm portion (34) are arranged concentrically around the axis (16) and parallel thereto, with successive ridges spaced from the axis (16) in a tiered arrangement. In another embodiment the antenna feed is a dielectric lens. The antenna feed is used in an antenna system having a reflector antenna in addition or in a low noise block (LNB) receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.