Dual frequency feed
US5003321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1985 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Sep 9, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q5/45
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dual frequency feed for use with an antenna permits reception of signals in both a low frequency band and a high frequency band and is comprised of a single feed through which both signals are propagated, a high frequency probe which extends concentrically within the throat of the feed for receiving the high frequency signal, a wave guide connected to the throat of the feed including a pair of turnstile junctions with four wave guides interconnecting the turnstile junctions, and a single output port with a polarization rotation device for receiving the low frequency signal. The four interconnecting wave guides may be either co-axial cables or generally rectangular wave guides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.