A 110 GHz ozone radiometer with a cryogenic planar Schottky mixer

A total power radiometer for monitoring the stratospheric ozone spectral line at 110 GHz is presented. Special features such as a cooled planar Schottky mixer as the front end and efficient reduction of standing waves in the quasi-optics are discussed in detail. The noise temperature of the receiver...

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Veröffentlicht in:	IEEE transactions on microwave theory and techniques 1993-12, Vol.41 (12), p.2232-2236
Hauptverfasser:	Koistinen, O.P., Valmu, H.T., Raisanen, A., Vdovin, V.F., Dryagin, Y.A., Lapkin, I.V.
Format:	Artikel
Sprache:	eng
Schlagworte:	540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-) AIR POLLUTION MONITORING Amplitude modulation CALIBRATION Cryogenics DESIGN Electromagnetic wave absorption ELECTRONIC EQUIPMENT ENVIRONMENTAL SCIENCES Exact sciences and technology Feeds Filters Frequency HETERODYNE RECEIVERS Instruments, apparatus, components and techniques common to several branches of physics and astronomy MEASURING INSTRUMENTS MICROWAVE EQUIPMENT MONITORING Optical instruments, equipment and techniques OZONE Photometers, radiometers and colorimeters Physics RADIATION DETECTORS RADIO EQUIPMENT RADIOMETERS Radiometry Temperature
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Zusammenfassung:	A total power radiometer for monitoring the stratospheric ozone spectral line at 110 GHz is presented. Special features such as a cooled planar Schottky mixer as the front end and efficient reduction of standing waves in the quasi-optics are discussed in detail. The noise temperature of the receiver is 530 K (single sideband), and the total bandwidth of the receiver is 1 GHz. A dual acoustooptical spectrometer is used for the signal detection.< >
ISSN:	0018-9480 1557-9670
DOI:	10.1109/22.260711