RF and Microwave Power Sensor Calibration by Direct Comparison Transfer

Shan, Yueyan; Cui, Xiaohai

doi:10.5772/34553

Cited by 11 publications

(12 citation statements)

References 25 publications

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“…K DUT is the relative calibration factor of DUT for frequency f expressed relative to K ref (for 50 MHz) (10).…”

Section: Measurement Uncertaintymentioning

confidence: 99%

“…There are a number of methods and techniques for determining the calibration factor, which are described in detail in the literature [1,[6][7][8]. Today, in many calibration laboratories the direct comparison transfer method with coaxial two-resistor power splitter is applied [1,6,9,10]. Also, the technique of the microwave power transfer standard (or Feed through microwave power standard) is used as a separate type of the direct comparison transfer method [6,11].…”

Section: Introductionmentioning

confidence: 99%

“…The issue of sensor nonlinearity measurement and correction and reexamination of the current method for sensor calibration is imposed as necessary and technically justifiable. The current methods for power sensor calibration and technical documentation do not allow for results correction due to sensor nonlinearity and thus reduction of power measurement uncertainty [1,2,5,6,8,10]. The existing practice has considered only sensor nonlinearity versus power level, while frequency dependence was disregarded and attributed to overall power measurement uncertainty.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved Method for Calibration and Nonlinearity Correction of Microwave Power Sensor

Rakonjac¹,

Mitrovic

Milanović³

et al. 2022

Teh. vjesn.

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Power sensor nonlinearity contributes significantly to the increase of the microwave power measurement uncertainty. Current methods for sensor calibration do not provide correction of the results, due to the sensor nonlinearity. The paper describes an improved method and an automated measuring system based on it for power sensor calibration that enables the correction of the results, taking into account amplitude and frequency dependent nonlinearity. The novel calibration method is based on the application of high-linearity thermistor power transfer standard. The power sensor calibration process is fully automated and improved by applying the automated measuring system, PC and VEEpro software. Performed calculation of the calibration measurement uncertainty and the analysis of power measurement uncertainty budget indicate that the new calibration method allows the correction of sensor nonlinearity and contributes to significant reduction of the microwave power measurement uncertainty, ranging from 15,8% to 40,5%. Experimental results and validation confirm the applicability of the improved calibration method and prove the existence of significant dependence of sensor nonlinearity on the power level, but also on the frequency of the measured microwave power.

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“…K DUT is the relative calibration factor of DUT for frequency f expressed relative to K ref (for 50 MHz) (10).…”

Section: Measurement Uncertaintymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improved Method for Calibration and Nonlinearity Correction of Microwave Power Sensor

Rakonjac¹,

Mitrovic

Milanović³

et al. 2022

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…UEHF power measurement tools are used to calibrate various measuring tools in the frequency range from 30 MHz to 18 GHz [7][8][9][10][11]. Typical UEHF power sensor calibration schemes are known, in particular, they are given in [9][10][11].…”

mentioning

confidence: 99%

Calibration of Analyzers of the Mobile Communication System Parameters

Meshcheriak¹,

Velychko²

2022

MEM

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The creation and operation of mobile communication systems is impossible without determining the parameters of base stations and mobile communication systems. For these purposes, appropriate devices are used that optimally combine testing capabilities in a single portable solution, which eliminates the need for several separate control and measuring devices. One of the main types of measurements of such devices is the measurement of the power of ultra-high and extremely high frequency signals. The article presents the method of calibrating meters of directional and absorbed power of ultra-high and extremely high frequency signals using the Bird 5000-EX mobile communication system parameter analyzers complete with the Power Sensor 5010V sensor and measuring sensors, Anritsu CellMaster MT8212EA and Arnitsu SiteMaster S331E spectrum analyzers. Calibration schemes for analyzers of parameters of mobile communication systems and analyzers of mobile communication base stations (hereinafter referred to as analyzers) have been developed. A measurement model of the analyzers based on the parameters of the directional and absorbed power of ultra-high and extremely high frequency signals based on the developed calibration schemes was created. The contribution of each component of the measurement model to the calibration result and the corresponding uncertainties of the model components were determined. The measurement uncertainty budget was made based on the proposed analyzer calibration model. The influence of the most significant influential values on the accuracy of measurement results was analyzed. The content of quantitative and qualitative indicators of corrections, which must be taken into account during calibration to achieve the highest accuracy of measurements, is revealed. The practical results of studies of measurement instability are given. The analyzer calibration method described in the article can be used in calibration laboratories that have the appropriate equipment and standards.

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“…Measurements of complex-valued quantities are often experienced in microwave applications, such as Scattering parameter (S -parameter) and equivalent source reflection coefficient [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Measurement Uncertainty of Complex-Valued Microwave Quantities

Meng¹,

Shan²

2013

PIER

Self Cite

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Abstract-This paper presents an evaluation of measurement uncertainty for complex-valued quantities in microwave applications, mainly focusing on the non-linear transformation of measurement uncertainty from rectangular coordinate to polar coordinate. Based on the law of propagation of uncertainty in matrix form, general expressions of the covariance matrix for the magnitude and phase uncertainties in polar coordinate have been derived, and several different application scenarios have been analyzed and evaluated with numerical simulations. This is followed by some recommendations on the coordinate transformations in practical microwave measurements.

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RF and Microwave Power Sensor Calibration by Direct Comparison Transfer

Cited by 11 publications

References 25 publications

Improved Method for Calibration and Nonlinearity Correction of Microwave Power Sensor

Improved Method for Calibration and Nonlinearity Correction of Microwave Power Sensor

Calibration of Analyzers of the Mobile Communication System Parameters

Measurement Uncertainty of Complex-Valued Microwave Quantities

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