Conversion Loss and Noise of Microwave and Millimeterwave Mixers: Part 1 - Theory

Conversion Loss and Noise of Microwave and Millimeterwave Mixers: Part 1 - Theory

An analysis is presented for the conversion loss and noise of microwave and millimeter-wave mixers. The analysis includes the effects of nonlinear capacitance, arbitrary embedding impedances, nonideality of microwave diodes, and shot, thermal, and scattering noise generated in the diode. Correlation...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1978-02, Vol.26 (2), p.49-55
Hauptverfasser: Held, D.N., Kerr, A.R.
Format: Artikel
Sprache:eng
Schlagworte:
Capacitance
Impedance
Local oscillators
Millimeter wave technology
Mixers
Noise figure
Performance analysis
Schottky diodes
Space technology
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Zusammenfassung:An analysis is presented for the conversion loss and noise of microwave and millimeter-wave mixers. The analysis includes the effects of nonlinear capacitance, arbitrary embedding impedances, nonideality of microwave diodes, and shot, thermal, and scattering noise generated in the diode. Correlation of down-converted components of the time-varying shot noise is shown to explain the "anomalous" noise observed in millimeter-wave mixers. Part 1 of the paper presents the theoretical basis for predicting mixer performance, while Part 2 compares theoretical and experimental results for mixers operating at 87 and 115 GHz.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.1978.1129312