A new method for determination of single-sideband noise figure

Author

Collins, Caroline E. ; Pollard, Roger D. ; Miles, Robert E. ; Dildine, Robert G.

Author_Institution

Dept. of Electron. & Electr. Eng., Leeds Univ., UK

Volume

42

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

2435

Lastpage

2439

Abstract

A new method for determining mathematically the single-sideband noise figure of a device from double-sideband measurements is presented. The need for tunable filters as in other single-sideband measurement systems has been eliminated, and hence this method greatly reduces the complexity and cost of performing accurate noise figure measurements. Compared to conventional methods, more noise power measurements are required during both the calibration and measurement stages. These are combined in such a way as to cancel out the unwanted sidebands and are subsequently corrected for mismatch errors. Results obtained at various frequencies for both active and passive test devices with frequency-dependent noise figures are presented and compared to the expected values and the equivalent double-sideband measurements

Keywords

calibration; electric noise measurement; measurement errors; microwave measurement; power measurement; active test devices; double-sideband measurements; frequency-dependent noise figures; microwave measurement; mismatch errors; noise figure measurements; noise power measurements; passive test devices; single-sideband noise figure; Calibration; Costs; Error correction; Filters; Frequency; Noise cancellation; Noise figure; Noise measurement; Performance evaluation; Power measurement;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.339778

Filename

339778