Dual function antenna
US4245222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1978 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Sep 15, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/205
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dual function antenna operating at two frequency bands for both the radar uzing function and the telemetry function with a single antenna cavity. A pair of flush-mounted, cavity-backed circumferential slots are located near the base of a missile body and are fed out-of-phase to produce an N=1 mode gain pattern with peaks at nose-on and aft aspects. Each slot is excited by a probe and tee-bar transition. A telemetry band trap circuit is incorporated into the radar band probe and tee-bar to isolate telemetry band energy. A single telemetry probe is inserted into the cavity and spaced apart from the radar probe to excite the antenna at telemetry frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.