CN204595094U - Binary channels phase Difference Measuring System - Google Patents

Binary channels phase Difference Measuring System Download PDF

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Publication number
CN204595094U
CN204595094U CN201520346613.0U CN201520346613U CN204595094U CN 204595094 U CN204595094 U CN 204595094U CN 201520346613 U CN201520346613 U CN 201520346613U CN 204595094 U CN204595094 U CN 204595094U
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degree
phase
signal
phase difference
input end
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陈志明
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Nanjing Guorui Defense System Co Ltd
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中国电子科技集团公司第十四研究所
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Abstract

The utility model relates to a kind of binary channels phase Difference Measuring System, comprises input end A, B, 90 degree of power splitters, 0 degree of power splitter, first, second RF/IF phase measurement chip AD8302, modulus converter A/D, EPLD, single-chip microcomputer, display; Its working band scope is 100MHz ~ 2000MHz, and measuring phase range is 0 degree ~ 360 degree, and measuring accuracy is typically +/-1 degree.The utility model is the two passage phase Difference Measuring System based on integrated circuit AD8302 chip, and by phase demodulation in real time online between two tunnel radiofrequency signals, phase difference output voltage, then measuring voltage amplitude, reach measure phase difference object.This measuring system working band is wide, measuring accuracy is high, highly versatile, volume are little, structure is simple, easy to use, meet binary channels phase difference detection with measure requirement, be the portable two-channel phase Difference Measuring System that a kind of practicality is stronger.

Description

Binary channels phase Difference Measuring System
Technical field
The utility model relates to a kind of phase Difference Measuring System, particularly relates to a kind of binary channels phase Difference Measuring System.
Background technology
In the Performance Detection of receiver, often need to measure the phase differential between radiofrequency signal, in order to revise inter-channel phase consistance.Phase differential between radiofrequency signal can be measured with oscillograph or network analyzer in laboratory.Adopt oscilloscope measurement, need first radiofrequency signal to be converted into square-wave signal, carry out measure phase difference by measuring square width, this method error of measuring is large; Adopt vector network analyzer can accurate measuring-signal phase place, first use reference cable calibration vector network analyzer during measurement, then the phase-shift characterisitc of measurement network under test relative reference cable; Although vector network analyzer can reach higher precision when measure phase difference, be not suitable for multi-channel rf signal phase difference and measure in real time.
Utility model content
The binary channels phase Difference Measuring System that one can realize the test of binary channels (with frequently) real-time phase difference is provided for above problem the utility model.
A kind of binary channels phase Difference Measuring System is provided in order to overcome the above problems the utility model, it is characterized in that: comprise input end A, input end B, 90 degree of power splitters, 0 degree of power splitter, one RF/IF phase measurement chip AD8302,2nd RF/IF phase measurement chip AD8302, modulus converter A/D, EPLD, single-chip microcomputer, display, input end A, input end B connects 90 degree of power splitters respectively, 0 degree of power splitter, 90 degree of power splitters carry out signal with a RF/IF phase measurement chip AD8302 and the 2nd RF/IF phase measurement chip AD8302 and are connected, 0 degree of power splitter also carries out signal with a RF/IF phase measurement chip AD8302 and the 2nd RF/IF phase measurement chip AD8302 and is connected, one RF/IF phase measurement chip AD8302 and the 2nd RF/IF phase measurement chip AD8302 carries out signal with modulus converter A/D and is connected, modulus converter A/D and EPLD carry out signal and are connected, EPLD and single-chip microcomputer carry out signal and are connected, single-chip microcomputer and display carry out signal and are connected,
The output signal of measured equipment two passages sends into input end A, input end B respectively, and the signal wherein entering input end A exports through 90 degree of power splitters, 90 degree, road phase shift output signal A1,0 degree, another road phase output signal A2; The signal entering input end B outputs signal B1 and B2 respectively through 0 degree of power splitter; Signal A1 and signal B1 enters a RF/IF phase measurement chip AD8302 to carry out phase demodulation, signal A2 and signal B2 and enters the 2nd RF/IF phase measurement chip AD8302 and carry out phase demodulation, the first and second RF/IF phase measurement chip AD8302 phase difference output voltages; Convert digital signal to through modulus converter A/D again and give EPLD, EPLD processes the data sent here, forms phase difference value, finally gives single-chip microcomputer, give display and show after single-chip microcomputer process.
Described modulus converter A/D adopts AD10242, EPLD to adopt EPM7512AE, and single-chip microcomputer adopts AT89C52, and display adopts dot matrix type liquid crystal MSP-G320240DBC.
Utility model works frequency band range is 100MHz ~ 2000MHz, and measuring phase range is 0 degree ~ 360 degree, and measuring accuracy is typically +/-1 degree.The utility model is the two passage phase Difference Measuring System based on integrated circuit AD8302 chip, and by phase demodulation in real time online between two tunnel radiofrequency signals, phase difference output voltage, then measuring voltage amplitude, reach measure phase difference object.This measuring system working band is wide, measuring accuracy is high, highly versatile, volume are little, structure is simple, easy to use, meet binary channels phase difference detection with measure requirement, be the portable two-channel phase Difference Measuring System that a kind of practicality is stronger.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of binary channels phase Difference Measuring System.
Fig. 2 single circuit phase differential resonse characteristic figure.
The orthogonal rear phase demodulation phase voltage subregion schematic diagram of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model provides a kind of binary channels phase Difference Measuring System, comprises input end A, input end B, 90 degree of power splitters, 0 degree of power splitter, a RF/IF phase measurement chip AD8302, the 2nd RF/IF phase measurement chip AD8302, modulus converter A/D " AD10242; " EPLD " EPM7512AE ", single-chip microcomputer " AT89C52 ", display " dot matrix type liquid crystal MSP-G320240DBC ";
The output signal of measured equipment two passages sends into input end A, input end B respectively, and the signal wherein entering input end A exports through 90 degree of power splitters, 90 degree, road phase shift output signal A1,0 degree, another road phase output signal A2; The signal entering input end B outputs signal B1 and B2 respectively through 0 degree of power splitter; Signal A1 and signal B1 enters a RF/IF phase measurement chip AD8302 to carry out phase demodulation, signal A2 and signal B2 and enters the 2nd RF/IF phase measurement chip AD8302 and carry out phase demodulation, the first and second RF/IF phase measurement chip AD8302 phase difference output voltages; Convert digital signal to through modulus converter A/D again and give EPLD, EPLD processes the data sent here, forms phase difference value, finally gives single-chip microcomputer, give display and show after single-chip microcomputer process.
The design fundamental purpose of input end and two power splitters be input A, B bis-road radio frequency merit divide and orthogonal processing, ensure that input signal can have good difference 0 ° ~ 360 ° scopes, because the output voltage of AD8302 is not dull at 0 ° ~ 360 °, after orthogonal by power splitter, can ensure to distinguish phase range, and then improve the measuring accuracy of system.AD8302 is converted to voltage difference two passage input radio frequency signal phase differences; Single circuit phase differential resonse characteristic (as shown in Figure 2), orthogonal rear phase demodulation phase voltage subregion (as shown in Figure 3).
The foregoing is only preferred embodiment of the present utility model, be not restricted to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.

Claims (2)

1. a binary channels phase Difference Measuring System, is characterized in that: comprise input end A, input end B, 90 degree of power splitters, 0 degree of power splitter, a RF/IF phase measurement chip AD8302, the 2nd RF/IF phase measurement chip AD8302, modulus converter A/D, EPLD, single-chip microcomputer, display;
Input end A, input end B connects 90 degree of power splitters respectively, 0 degree of power splitter, 90 degree of power splitters carry out signal with a RF/IF phase measurement chip AD8302 and the 2nd RF/IF phase measurement chip AD8302 and are connected, 0 degree of power splitter also carries out signal with a RF/IF phase measurement chip AD8302 and the 2nd RF/IF phase measurement chip AD8302 and is connected, one RF/IF phase measurement chip AD8302 and the 2nd RF/IF phase measurement chip AD8302 carries out signal with modulus converter A/D and is connected, modulus converter A/D and EPLD carry out signal and are connected, EPLD and single-chip microcomputer carry out signal and are connected, single-chip microcomputer and display carry out signal and are connected,
The output signal of measured equipment two passages sends into input end A, input end B respectively, and the signal wherein entering input end A exports through 90 degree of power splitters, 90 degree, road phase shift output signal A1,0 degree, another road phase output signal A2; The signal entering input end B outputs signal B1 and B2 respectively through 0 degree of power splitter; Signal A1 and signal B1 enters a RF/IF phase measurement chip AD8302 to carry out phase demodulation, signal A2 and signal B2 and enters the 2nd RF/IF phase measurement chip AD8302 and carry out phase demodulation, the first and second RF/IF phase measurement chip AD8302 phase difference output voltages; Convert digital signal to through modulus converter A/D again and give EPLD, EPLD processes the data sent here, forms phase difference value, finally gives single-chip microcomputer, give display and show after single-chip microcomputer process.
2. a kind of binary channels phase Difference Measuring System according to claim 1, it is characterized in that: described modulus converter A/D adopts AD10242, EPLD adopts EPM7512AE, and single-chip microcomputer adopts AT89C52, and display adopts dot matrix type liquid crystal MSP-G320240DBC.
CN201520346613.0U 2015-05-26 2015-05-26 Binary channels phase Difference Measuring System Active CN204595094U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105842537A (en) * 2016-03-18 2016-08-10 山东交通学院 Method and circuit for measuring phase difference based on integrated phase frequency discriminator
CN107024618A (en) * 2016-02-02 2017-08-08 北京航天长征飞行器研究所 A kind of wide-band microwave signal based on signal autocorrelation compares phase system
CN105699772B (en) * 2016-01-20 2019-11-12 北京东方计量测试研究所 A kind of verification method and its device of orthogonal reference phase
CN113472387A (en) * 2020-03-12 2021-10-01 电子科技大学 W-waveband space field amplitude-phase test system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105699772B (en) * 2016-01-20 2019-11-12 北京东方计量测试研究所 A kind of verification method and its device of orthogonal reference phase
CN107024618A (en) * 2016-02-02 2017-08-08 北京航天长征飞行器研究所 A kind of wide-band microwave signal based on signal autocorrelation compares phase system
CN107024618B (en) * 2016-02-02 2019-05-17 北京航天长征飞行器研究所 A kind of wide-band microwave signal based on signal autocorrelation compares phase system
CN105842537A (en) * 2016-03-18 2016-08-10 山东交通学院 Method and circuit for measuring phase difference based on integrated phase frequency discriminator
CN105842537B (en) * 2016-03-18 2018-09-04 山东交通学院 Method for measuring phase difference based on integrated phase detection discriminator and circuit
CN113472387A (en) * 2020-03-12 2021-10-01 电子科技大学 W-waveband space field amplitude-phase test system

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Effective date of registration: 20191016

Address after: Room 1401, floor 14, block a, building 1, Guorui building, No. 359, Jiangdong Middle Road, Jianye District, Nanjing City, Jiangsu Province, 210019

Patentee after: Nanjing Guorui Defense System Co., Ltd.

Address before: 210039 No. 8, Rui Rui Road, Yuhuatai District, Jiangsu, Nanjing

Patentee before: No. 14 Inst., China Electronic Science & Technology Group Corp.

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