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Progress In Two-Dimensional Horn Imaging Arrays

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5 Author(s)
Rebeiz, G.M. ; California Institute of Technology, Pasadena, CA, 91125, USA. ; Guo, Yong ; Stimson, P.A. ; Kasilingam, D.P.
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Two-dimensional horn-antenna imaging arrays have been fabricated for 93 GHz. In this configuration, a dipole antenna is suspended in a pyramidal horn on a 1-¿m silicon oxynitride memb This approach leaves room for low-frequency lines and processing electronics. Pattern measurements on single elements agree well with theory, exhibiting 3-dB beamwidths of 54° and 62° for the E and H-planes respectively. Horn aperture efficiencies of 44 ± 4% (including mismatch and resistive losses) have been measured. Possible applications include imaging arrays for remote sensing, plasma diagnostics and radiometry, and superconducting tunnel-junction receivers for radio astronomy.

Published in:

Microwave Conference, 1988. 18th European

Date of Conference:

12-15 Sept. 1988