18 November 1989 Efficiency Of Millimeter-Wave Horn Imaging Arrays
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Proceedings Volume 1039, 13th Intl Conf on Infrared and Millimeter Waves; (1989) https://doi.org/10.1117/12.978315
Event: 13th International Conference on Infrared and Millimeter Waves, 1987, Honolulu, HI, United States
Abstract
Two-dimensional horn-antenna arrays are monolithic, high-efficiency imaging detectors of millimeter-wave radiation. In this configuration, a dipole antenna is suspended in a pyramidal horn on a 1-μm silicon oxynitride membrane. This approach leaves room on the wafer for low-frequency lines and processing electronics. Antenna 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% have been measured at 93 GHz. Loss processes include impedance mismatch loss, due to impedance mismatch between the antenna and the detector, resistive loss in the horn sidewalls, cross-polarization, intrinsic pattern loss, and horn-to-horn coupling loss. A system efficiency of 24% has been measured for a lens-coupled array.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gabriel M. Rebeiz, Gabriel M. Rebeiz, Yong Guo, Yong Guo, Philip A. Stimson, Philip A. Stimson, David B. Rutledge, David B. Rutledge, } "Efficiency Of Millimeter-Wave Horn Imaging Arrays", Proc. SPIE 1039, 13th Intl Conf on Infrared and Millimeter Waves, (18 November 1989); doi: 10.1117/12.978315; https://doi.org/10.1117/12.978315
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