Title:
THREE DIMENSIONAL FEED THROUGH LENS WITH HEMISPHERICAL COVERAGE
Document Type and Number:
WIPO Patent Application WO1988006808
Kind Code:
A3
Abstract:
A lens antenna having four phased array apertures positioned for hemispherical coverage is disclosed. An array of phase shifters is disclosed, each of which is interconnected with four radiating elements, one on each of the four apertures. A feed horn is used to feed the lens and switches in the lens are used to switch the energy received from the feed horn to the phase shifter, and after phase shifting, to a selected aperture for radiation. The switches also perform a reciprocal function by switching energy received at an aperture to the phase shifter and then to an aperture for radiation to the feed horn. In a further embodiment, the mounting of transmitting and receiving components, such as a high power amplifier and a low noise amplifier, with a combination of DPDT switches in the lens is disclosed and results in a solid state T/R type antenna array. In one embodiment, the switches enable the lens to radiate from three of the apertures for a scan angle of 270 degrees from a single feed horn. The addition of more feed horns per face results in multiple radiated beams from a single face.
Inventors:
TANG RAYMOND (US)
Application Number:
PCT/US1988/000362
Publication Date:
September 22, 1988
Filing Date:
February 08, 1988
Export Citation:
Assignee:
HUGHES AIRCRAFT CO (US)
International Classes:
H01Q3/24; H01Q3/46; H01Q25/00; (IPC1-7): H01Q3/24; H01Q3/46; H01Q25/00
Domestic Patent References:
| WO1986000760A1 | 1986-01-30 |
Foreign References:
| US4580140A | 1986-04-01 | |||
| DE2611891A1 | 1977-09-29 | |||
| US3430242A | 1969-02-25 | |||
| US3906502A | 1975-09-16 | |||
| US3971022A | 1976-07-20 |
Other References:
Conference on Aerospace Antennas, 8-10 June 1971, I.E.E. (Savoy Place, London, GB), R.H.J. Cary: "An airborne electronically scanned X band narrow beam circular antenna array", pages 19-24
Download PDF:
Previous Patent: WIDE BAND CIRCULATOR
Next Patent: DEVICE FOR DETECTING OUTPUT VOLTAGE OF A LASER OSCILLATOR
Next Patent: DEVICE FOR DETECTING OUTPUT VOLTAGE OF A LASER OSCILLATOR