Proposal of photonic frequency-conversion method using bandpass sampling in multicarrier operated radio-on-fiber link

This paper adopts frequency conversion method to avoid same frequency interfered, and deduces the dielectric loss factor and the equivalent capacitance using the harmonic analysis. Based on this theory, a DSP+FPGA detecting platform was built. At last, utilizing capacitance and resistance to simulate as dielectric loss measurement sample, the experiment was conducted.

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Improvement on Zero Nonlinear Compensation of Time Division Multiplier

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.687-691.3132 ◽

2014 ◽

Vol 687-691 ◽

pp. 3132-3136

Author(s):

Wu Zhu ◽

Juan Juan Yu

Keyword(s):

Compensation Effect ◽

Frequency Conversion ◽

Zero Point ◽

Power Measurement ◽

Test Results ◽

Conversion Method ◽

Voltage Frequency ◽

Nonlinear Compensation ◽

Voltage Feedback ◽

Time Division

In order to overcome the power measurement error caused by switch leakage of time division multiplier, in this paper, the mechanism of switch leakage of no-beats time division multiplier was analyzed, and switch leak was tested. On the basis of this, power compensation circuit on zero point correction based on voltage feedback and voltage frequency conversion method is designed, subsequently the compensation effect was tested respectively. Test results show that the zero compensation method based on voltage frequency conversion method is better, the zero error decreased to 0.0022%, the accuracy of the power measurement was improved.

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An automatic frequency conversion method of motor for cut tobacco flavoring drum

2021 6th International Conference on Automation, Control and Robotics Engineering (CACRE) ◽

10.1109/cacre52464.2021.9501313 ◽

2021 ◽

Author(s):

Han Shaolong ◽

Wu Yalin ◽

Jian Jinling ◽

Zhao Wei

Keyword(s):

Frequency Conversion ◽

Automatic Frequency ◽

Conversion Method ◽

Cut Tobacco

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Adjustment of mud pump parameters by the frequency conversion method

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1111/1/012058 ◽

2021 ◽

Vol 1111 (1) ◽

pp. 012058

Author(s):

R I Suleimanov ◽

M Ya Khabibullin ◽

A Yu Davydov ◽

L M Zaripova

Keyword(s):

Frequency Conversion ◽

Conversion Method

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Frequency conversion by nearly-degenerate four-wave mixing in traveling-wave semiconductor laser amplifiers

IEE Proceedings J Optoelectronics ◽

10.1049/ip-j.1990.0036 ◽

1990 ◽

Vol 137 (4) ◽

pp. 209 ◽

Cited By ~ 14

Author(s):

N. Schunk ◽

G. Groβkopt ◽

R. Ludwig ◽

R. Schnabel ◽

H.G. Weber

Keyword(s):

Semiconductor Laser ◽

Traveling Wave ◽

Frequency Conversion ◽

Four Wave Mixing ◽

Wave Mixing ◽

Laser Amplifiers ◽

Degenerate Four Wave Mixing ◽

Semiconductor Laser Amplifiers

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Research on expanding the range of reproduction of magnetic flux density of the DC field of the state primary standard GET12-2011

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2020-4-3-7 ◽

2020 ◽

pp. 3-7

Author(s):

Vladlen Ya. Shifrin ◽

Denis I. Belyakov ◽

Alexander E. Shilov ◽

Denis D. Kosenko

Keyword(s):

Magnetic Flux ◽

Magnetic Induction ◽

Frequency Conversion ◽

Magnetic Measurements ◽

Primary Standard ◽

Uncertainty Budget ◽

The State ◽

State Primary Standard ◽

Magnetic Flux Density ◽

Constant Field

The results of works aimed at increasing the level of uniformity of measurements of the magnetic induction of a constant field – the basic value in the field of magnetic measurements. A set of equipment for reproducing a unit of magnetic induction of a constant field in the range of 1–25 mT was created and described. The inclusion of this complex in the State primary standard of units of magnetic induction, magnetic flux, magnetic moment and magnetic induction gradient GET 12-2011 will ensure the reproduction and direct transmission of the unit of permanent magnetic induction in the ranges of not only weak (10–3–1 mT), but medium (1–25 mT) and strong (0.025–1 T) magnetic fields. A quantum cesium magnetometer based on the resolved structure of cesium atoms was created to transmit the unit of magnetic induction to the region of medium fields. The procedure for calculating the frequency conversion coefficients to magnetic induction of the created quantum cesium magnetometer is described. The uncertainty budget for reproducing a unit of magnetic induction of a constant field using the created complex is estimated.

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