Title :
A millimeter-wave monolithic load switching twist reflector for compact imaging cameras
Author :
Huguenin, G. Richard ; Moore, Ellen L. ; Bandla, Sudarsanam ; Nicholson, John J.
Author_Institution :
Millimetrix, Hadley, MA, USA
fDate :
12/1/1996 12:00:00 AM
Abstract :
A monolithic load switching twist reflector (LSTR) has been built and tested for use in 94 GHz passive imaging cameras. In this paper, we describe the LSTR component, which switches between the dual roles of load comparison in a radiometer and reducing the length of the camera. Radiometric and quasioptical tests show that the array has an insertion loss of 0.25 dB and a switching ratio of >20 dB. This active array of p-i-n diodes can replace the mechanical choppers often used in load comparison
Keywords :
image sensors; millimetre wave detectors; millimetre wave devices; millimetre wave imaging; millimetre wave measurement; object detection; p-i-n diodes; radiometry; 0.25 dB; 94 GHz; EHF; MM-wave monolithic reflector; camera length reduction; compact imaging cameras; load comparison; load switching twist reflector; p-i-n diode active array; passive imaging cameras; radiometer; Cameras; Clothing; Humans; Millimeter wave technology; Optical mixing; Optical polarization; Optical receivers; Optical sensors; Switches; Testing;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
