Precise measurement techniques of millimeter-wave power
Abstract
Precise power measurement techniques in the millimeter-wave region are described, with attention to a calorimetric method based on thermal balance control, on the basis of which a calorimeter for measuring effective bolometer mount efficiency has been developed. Automatic power measurement systems which incorporate digital techniques are also designed and developed, and two types of circular bolometer mount having high effective efficiency in the 100 GHz band are described. For the case of the 30 GHz band, a method which employs a coupler as a comparator and quarter-wavelength spacer is proposed which significantly reduces the influence of impedance mismatch.
- Publication:
-
Electrotechnical Laboratory
- Pub Date:
- June 1981
- Bibcode:
- 1981etlr.rept.....I
- Keywords:
-
- Bolometers;
- Calorimeters;
- Microwave Equipment;
- Millimeter Waves;
- Power Efficiency;
- Accuracy;
- Calibrating;
- Digital Techniques;
- Error Analysis;
- Impedance Matching;
- Pyroelectricity;
- Thermoelectricity;
- Electronics and Electrical Engineering