Precise Differential-Phase Generator

White, Robert A.; Yell, R.W.

doi:10.1109/tim.1980.4314959

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…The standard deviation of the unit reproduction (random error) does not exceed 0.0009 " at PSA up to 5 " and increases to 0.005 O at 360 ". audiofrequency range [6]. In Czechoslovakia, a phase-measuring apparatus has been produced with an accuracy of 0.005" to 0.05" in the frequency range from 30 Hz to 10 kHz [7].…”

Section: Psa Standard Amentioning

confidence: 99%

Metrological Studies in the Field of Phase-angle Measurement

1987

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The paper presents a discussion of the studies carried out at VNIIM on the measurement assurance of working and reference instruments in the field of measuring phase-shift angle (PSA) between two electric potentials. A description is given of the block diagram of the PSA standard and standard measures (phase calibrators) as well as the wide-band phase comparator designed to transfer the size of the PSA from the standard to lower echelons of the hierarchical chain. It is shown that the instrumental uncertainty lies between 0.0002° and 0.05° in the frequency range of 0.001 Hz to 10 MHz. A possibility of increasing the accuracy of phaseangle measurement up to 10-5 - 10-6 of a degree is indicated.

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Section: Psa Standard Amentioning

confidence: 99%

Metrological Studies in the Field of Phase-angle Measurement

1987

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“…The novel concept of MMG proposed in this paper is critical for the evaluation of the PIM performance of a chamber for antenna PIM measurements. However, according to our knowledge, the recent research on PIM is mainly focused on analyses of PIM models [21][22][23] and PIM test devices [24][25][26][27]. At present, no one has proposed a similar idea of defining the MMG of the PIM measurement chamber, and thus there is no corresponding method of estimating the MMG.…”

Section: Introductionmentioning

confidence: 99%

A Method for Measuring the Maximum Measurable Gain of a Passive Intermodulation Chamber

Cai

Zhou

Liu³

et al. 2021

Electronics

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This paper presents an approximate method that allows the calculation of the maximum measurable gain (MMG) in an anechoic chamber. This method is realized by using a low passive intermodulation (PIM) medium-gain directional antenna. By reducing the distance between the antenna and the wall of the chamber to reduce path loss, the purpose of replacing a high-gain antenna with a medium-gain antenna is achieved. The specific relationship between distance and equivalent gain is given in this paper. The measurement interval is determined by the 3 dB beamwidth of the measurement antenna to scan the whole chamber. A set of corresponding data for the residual PIM level and the MMG of the chamber can be obtained by the method of measurement outlined herein. The feasibility of this method was verified by measurements in two PIM measurement chambers.

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“…First modern sampling digital phase meters used fast Fourier transform for signal analysis [1] with uncertainties about 4 millidegree. Today it is possible to achieve uncertainties about 0.5 millidegree [2].…”

Section: Introductionmentioning

confidence: 99%

Uncertainty analysis of non-coherent sampling phase meter with four parameter sine wave fitting by means of Monte Carlo

Šíra

Maslan

2014

29th Conference on Precision Electromagnetic Measurements (CPEM 2014)

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Uncertainty analysis of a very simple sampling phase meter based on four parameter sine wave fitting is presented in this paper. An uncertainty of a sample time and a measured voltage is assigned to every sampled point and a total uncertainty of a phase difference is calculated by means of the Monte Carlo method. Results show the total uncertainty is lower than 0.5 millidegree for selected digitizer. A noise of the measured signal or the digitizer is the largest contribution to the total uncertainty.Index Terms-measurement uncertainty, phase difference, Monte Carlo, sine wave fitting.

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Precise Differential-Phase Generator

Cited by 7 publications

References 1 publication

Metrological Studies in the Field of Phase-angle Measurement

Metrological Studies in the Field of Phase-angle Measurement

A Method for Measuring the Maximum Measurable Gain of a Passive Intermodulation Chamber

Uncertainty analysis of non-coherent sampling phase meter with four parameter sine wave fitting by means of Monte Carlo

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