Title :
A wide-band monolithic quasi-optical power meter for millimeter and submillimeter-wave applications
Author :
Ling, Curtis C. ; Rebeiz, Gabriel M.
Author_Institution :
Dept. of Electr. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
8/1/1991 12:00:00 AM
Abstract :
A novel monolithic power meter has been developed for submillimeter-wave applications (100 GHz to 10 THz). The detector is a large-area bismuth bolometer integrated on a 1.2-μm-thick dielectric membrane. This approach results in a wide-band, high-responsivity detector. The power meter is simple to fabricate, is inexpensive, and can be easily calibrated using a low-frequency network. Quasi-optical measurements at 90, 140, and 240 GHz show that the bolometer is polarization-independent and could be modeled by a simple transmission line model. Absolute power measurements at 90, 140, and 240 GHz show a ±5% accuracy and agree well with a calibration Anritsu power meter at 90 GHz. Potential application areas are power calibration, antenna coupling efficiency measurements, and absolute power measurements from solid-state devices and far-infrared lasers at submillimeter wavelengths. Absolute output power measurements on a 220-280 GHz tripler using the quasi-optical power meter are presented as an application example
Keywords :
bolometers; calibration; microwave measurement; power measurement; 100 GHz to 10 THz; Bi; absolute power measurements; antenna coupling efficiency measurements; bolometer; dielectric membrane; far-infrared lasers; high-responsivity detector; low-frequency network; millimeter-wave applications; monolithic quasi-optical power meter; power calibration; solid-state devices; submillimeter-wave applications; transmission line model; Antenna measurements; Bismuth; Bolometers; Calibration; Detectors; Dielectrics; Power measurement; Transmission line measurements; Wavelength measurement; Wideband;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on