Determining Noise Temperature of a Noise Source Using Calibrated Noise Sources and an RF Attenuator

Kang, Tae-Weon; Kim, Jeong‐Hwan; Lee, Joo-Gwang; Park, Jeong‐Il; Kim, Dae-Chan

doi:10.1109/tim.2011.2130970

Cited by 8 publications

(3 citation statements)

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“…There are several procedures commonly used for measuring the performance of millimetre‐wave mixers . In general, they all require the de‐embedding of the mixer performance from Y ‐factor measurements.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of different measurement techniques for characterization of millimeter‐wave mixers

Maestrojuán

Rea

Ederra

et al. 2014

Micro & Optical Tech Letters

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This article compares for the first time three well‐known procedures for characterizing the noise temperature and conversion loss of a millimeter wave mixer. To carry out this study, a 183 GHz subharmonic mixer has been measured using three common procedures, that is, the “attenuator,” the “gain,” and the “noise injection” procedures. Furthermore, for every measurement procedure, three different detection methods have been used; a broadband power meter, a yttrium iron garnet filter working together with a broadband power meter, and a spectrum analyzer. The “gain procedure” has turned out to be the most stable one in terms of less variation between consecutive values and flatter results along all the frequency range. Results obtained with every detection method are consistent with each other, showing a similar performance of the mixer independent of the detection method used. In addition, the effect of the inclusion or omission of an isolator between mixer and intermediate frequency pre‐amplifier has also been evaluated. For the first time, clear conclusions about its influence are driven. The inclusion of the isolator has culminated in more reliable results, although the measured NT values are increased. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1441–1447, 2014

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Section: Introductionmentioning

confidence: 99%

Experimental analysis of different measurement techniques for characterization of millimeter‐wave mixers

Maestrojuán

Rea

Ederra

et al. 2014

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…here are several procedures commonly employed for measuring the performance of millimetre wave mixers, [1]- [2]. In general they all require the de-embedding of the mixer performance from Y-factor measurements.…”

Section: Introductionmentioning

confidence: 99%

Millimeter-wave mixer measurement: Comparison of different methods

Maestrojuán

Rea

Ederra

et al. 2013

2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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This paper compares three different procedures for characterising the Noise Temperature and Conversion Loss of a millimetre wave mixer. To carry out this study a 183 GHz subharmonic mixer has been measured using three alternative procedures, i.e. the "Attenuator", the "Gain" and the "Noise injection" procedures. Furthermore for every measurement procedure three different detection methods have been used; a Broadband Power Meter, a YIG Filter working together with a Broadband Power Meter and a Spectrum Analyser. The "Gain procedure" has turned out to be the most stable one in terms of less variation between consecutive values and flatter results along all the frequency range. Results obtained with every detection method are consistent with each other, showing a similar performance of the mixer independently the detection method used.

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“…Introducing the RF attenuator to form a cold noise source gives rise to an additional but not noticeable uncertainty. Although the measurement system was presented for the frequency range of 18-26.5 GHz [5], this methodology can be used for other frequency bands.…”

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confidence: 99%