Parabolic horn antenna with microstrip feed

Details Parabolic horn antenna with microstrip feed Parabolic horn antenna with microstrip feed

1976-04-01

1977-09-27

Lieberman, Eli

Communications: radio wave antennas

Antennas

Microstrip

343779, 343783, 343840, H01Q 1302

Patent

active

040514765

ABSTRACT:
An antenna element is disclosed having a printed circuit parallel plate region with a parabolically shaped reflecting wall and a flared radiating section. The flared radiating section is disposed along an aperture which intersects the axis of the parabola at an acute angle. A microstrip feed formed integrally with the printed circuit parallel plate region is offset from the reflecting wall and is adapted to introduce radio frequency energy at the focal point of such reflecting wall. Load material is disposed adjacent to the focal point to absorb radio frequency energy reflected by the aperture thereby improving the VSWR of the feed. Such arrangement enables close element-to-element spacing in an array, thereby substantially eliminating grating lobes while enabling intermeshing of the elements to provide port and starboard array antennas.

REFERENCES:
patent: 2822541 (1958-02-01), Sichak et al.
patent: 3964069 (1976-06-01), McDonough

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