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A 110 GHz ozone radiometer with a cryogenic planar Schottky mixer

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6 Author(s)
O. P. Koistinen ; Helsinki Univ. of Technol., Espoo, Finland ; H. T. Valmu ; A. Raisanen ; V. F. Vdovin
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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

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IEEE Transactions on Microwave Theory and Techniques  (Volume:41 ,  Issue: 12 )