CN111856158B - Intelligent antenna measuring system - Google Patents
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- CN111856158B CN111856158B CN201910348941.7A CN201910348941A CN111856158B CN 111856158 B CN111856158 B CN 111856158B CN 201910348941 A CN201910348941 A CN 201910348941A CN 111856158 B CN111856158 B CN 111856158B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
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Abstract
The invention relates to an antenna intelligent measuring system, which comprises an electric wave measuring device and an intelligent device. The electric wave measuring device comprises a standard antenna and a moving part. The intelligent device is electrically connected with the electric wave measuring device and generates a detection pattern according to a plurality of measuring positions and a plurality of identification radiation gains of the antenna to be measured. The intelligent device further stores a plurality of reference pattern diagrams, and the reference pattern diagrams respectively correspond to the antennas with different radiation patterns. The intelligent device compares the detection pattern with the reference patterns to generate an identification signal corresponding to the type of the antenna to be tested. The electric wave measuring device further receives the identification signal, determines a measuring range of the standard antenna for gain measurement of the antenna to be measured according to the identification signal, and determines the number of measuring points in the measuring range. Compared with the prior art, the invention realizes the characteristics of shortening the measuring time and maintaining the accuracy by utilizing the image identification.
Description
Technical Field
The present invention relates to a system, and more particularly, to an intelligent antenna measurement system.
Background
Referring to fig. 1 and 2, each of which is a schematic diagram of a conventional antenna radiation pattern measuring method, each black dot on a sphere represents each measurement sampling point 1, and a three-dimensional radiation pattern is obtained by plotting antenna gain values measured by a plurality of measurement sampling points 1 corresponding to spherical coordinate information.
The common disadvantage of these two measurement methods is that: the omni-directional and global measurement is uniformly adopted regardless of the type of the antenna to be measured, and if a more accurate radiation pattern is to be obtained, the number of measurement sampling points 1 must be increased, so as to increase the measurement time, in other words, the measurement accuracy and the measurement time cannot be considered simultaneously.
The above-mentioned disadvantages are not obvious in the past 4 th generation of mobile communication, but the 5 th generation of mobile communication is highlighted because the working frequency band of the 4 th generation of mobile communication antenna is not more than several GHz, and the 5 th generation of mobile communication antenna is a millimeter wave frequency band working at several tens of GHz, and the millimeter wave frequency band antenna has higher directivity characteristics (the main beam is concentrated in a smaller spatial angle range) than the antenna used in the previous generation of communication system, so that more intensive sampling is necessary to accurately construct the shape and intensity of the main beam of the radiation field pattern when measuring the radiation field pattern, but the denser sampling represents longer measurement time and lower research and development efficiency.
Disclosure of Invention
The preferred embodiment of the invention discloses an intelligent antenna measurement system, which can solve the problem that the measurement accuracy and the measurement time of the traditional technology can not be considered simultaneously.
The preferred embodiment of the antenna intelligent measuring system is suitable for measuring the radiation parameters of the antenna to be measured, and comprises an electric wave measuring device and an intelligent device.
The electric wave measuring device comprises a standard antenna and a moving part. The standard antenna is arranged on the moving part, and the moving part is controlled to link the standard antenna to a plurality of measuring positions in the space so that the standard antenna can carry out gain measurement on the antenna to be measured.
The intelligent device is electrically connected with the electric wave measuring device, records each measuring position, calculates and records an identification radiation gain of the antenna to be measured corresponding to each measuring position, and generates a detection pattern according to the measuring positions and the identification radiation gains. The intelligent device further stores a plurality of reference pattern diagrams, and the reference pattern diagrams respectively correspond to the antennas with different radiation patterns. The intelligent device compares the detection pattern with the reference patterns to generate an identification signal corresponding to the type of the antenna to be tested. The electric wave measuring device further receives the identification signal, determines a measuring range of the standard antenna for measuring the gain of the antenna to be measured according to the identification signal, and determines the number of measuring points in the measuring range.
Preferably, the intelligent device comprises an identification control unitElectrically connecting the moving member to control the moving member to move to each of the measuring positions (r, theta) i 、
) And recording each measured position (r, theta) i 、
) (ii) a The identification control unit is electrically connected with the standard antenna to calculate and record the position of the standard antenna at each measuring position (r, theta) i 、
) In time, the identification radiation gain G of the antenna to be measured i (ii) a The identification control unit records the polar angle theta of N measuring positions i And azimuth angle
And recording N identified radiation gains G i (ii) a The identification control unit further determines the polar angle theta of the N pen i＝1～N And azimuth of N pens
Respectively as two perpendicular axes for detecting the field pattern, and the gains G of N identified radiation i The size of the detection field pattern is corresponding to the color level of the detection field pattern to be distinguished and displayed; and, each polar angle θ i To each azimuth angle
Corresponding to an identification radiation gain G i The parameter i =1 to N, and the parameter N is a positive integer.
Preferably, the parameter N is a positive integer greater than or equal to 6.
Preferably, when the parameter N =6, the 6 measurement positions are (r, θ) respectively 1 ＝90°、
)、(r、θ 2 ＝90°、
)、(r、θ 3 ＝90°、
)、(r、θ 4 ＝90°、
)、(r、θ 5 ＝0°、
) And (r, theta) 6 ＝180°、
) And the parameter r is a fixed distance between the standard antenna and the antenna to be measured.
Preferably, when the parameter N =14, the 14 measurement positions are (r, θ) respectively 1 ＝90°、
)、(r、θ 2 ＝90°、
)、(r、θ 3 ＝90°、
)、(r、θ 4 ＝90°、
)、(r、θ 5 ＝0°、
)、(r、θ 6 ＝180°、
)、(r、θ 7 ＝45°、
)、(r、θ 8 ＝45°、
)、(r、θ 9 ＝45°、
)、(r、θ 10 ＝45°、
)、(r、θ 11 ＝135°、
)、(r、θ 12 ＝135°、
)、(r、θ 13 ＝135°、
)、(r、θ 14 ＝135°、
) And the parameter r is a fixed distance between the standard antenna and the antenna to be tested.
Preferably, the smart device further comprises a big data storage unit storing the reference pattern maps.
Preferably, the reference patterns correspond to a plurality of antennas with different radiation patterns, respectively, and include: monopole antennas, dipole antennas, omni-directional antennas, and highly directional array antennas.
Preferably, the identification control unit is further electrically connected to the big data storage unit to read the reference pattern maps, compare the detection pattern map with the reference pattern maps to select one of the reference pattern maps which is most similar to the detection pattern map, where the antenna type corresponding to the most similar reference pattern map is the closest radiation type of the antenna to be tested, and the identification control unit further generates the identification signal corresponding to the type of the antenna to be tested.
Preferably, the two perpendicular axes of each reference pattern are polar angles θ j And azimuth angle
Each polar angle theta j To each azimuth angle
Both of which correspond to a reference gain G j These reference gains G j Is displayed in a color gradation.
Preferably, the electric wave measuring device further comprises a network analyzer electrically connected between the standard antenna and the identification control unit.
The effect of the invention is: the electric wave measuring device determines the measuring range and the measuring points in the measuring range when the gain measurement is carried out on the antenna to be measured according to the identification signal, and the traditional technology does not completely consider the type of the antenna to be measured to carry out the all-spherical measurement, so the measuring time can be shortened, the measuring accuracy can be considered, and the defects of the traditional technology are overcome.
Drawings
Fig. 1 is a schematic diagram illustrating a conventional method for measuring radiation patterns of an antenna.
Fig. 2 is a schematic diagram of another conventional antenna radiation pattern measurement method.
FIG. 3 is a schematic diagram of an antenna intelligent measurement system according to a preferred embodiment of the present invention.
Fig. 4 is a schematic diagram of the spherical coordinates measured by the antenna under test according to the preferred embodiment of the invention.
Detailed Description
Referring to fig. 3, the present invention provides an intelligent antenna measurement system suitable for measuring radiation parameters of an antenna 2 to be measured, and the preferred embodiment of the intelligent antenna measurement system includes an electric wave measurement device 3 and an intelligent device 4.
The electric wave measuring device 3 includes a standard antenna 31, a moving part 32, and a network analyzer 33. The network analyzer 33 is electrically connected to the standard antenna 31, the standard antenna 31 is disposed on the moving part 32, and the moving part 32 is controlled to couple the standard antenna 31 to a plurality of measurement positions in the space, so that the standard antenna 31 can measure the gain of the antenna 2 to be measured.
The antenna 2 to be measured is located at the center of a sphere in a spherical coordinate, and the electric wave measuring device 3 measures each measurement position (r, θ, g, b) of the antenna 2 to be measured,
) Are represented in spherical coordinates as shown in fig. 4.
When the radiation type of the antenna 2 to be measured is unknown, the electric wave measuring device 3 will first perform pattern recognition, and the pattern recognition is performed by the following method: the electric wave measuring device 3 is arranged at preset N measuring positions (r, theta) i 、
) I =1 to N, respectively measuring N identification radiation gains G of the antenna 2 to be measured i The parameter N is a positive integer greater than or equal to 6, and the parameter r is a fixed distance between the standard antenna 31 and the antenna 2 to be measured, so that the N measurement positions are all located on a common spherical surface.
Referring to fig. 3 and 4, when the parameter N =6, it represents that the radio wave measuring device 3 measures the gain of the antenna 2 from the 6 directions of the front, right, back, left, up and down of the antenna 2, and the 6 measuring positions 51, 52, 53, 54, 55 and 56 are respectively expressed as (r, θ) by the spherical coordinates 1 ＝90°、
)、(r、θ 2 ＝90°、
)、(r、θ 3 ＝90°、
)、(r、θ 4 ＝90°、
)、(r、θ 5 ＝0°、
) And (r, theta) 6 ＝180°、
)。
The intelligent device 4 includes an identification control unit 41 and a big data storage unit 42.
The recognition control unit 41 is electrically connected to the moving member 32 to control the moving member 32 to move to each of the measuring positions (r, θ) i 、
) The identification control unit 41 is further electrically connected to the network analyzer 33 of the electric wave measuring device 3 to calculate and record the position of the standard antenna 31 at each measuring position (r, theta) i 、
) Then, each of the antennas 2 to be measured recognizes the radiation gain G i The identification control unit 41 further records each measurement position (r, θ) i 、
). The recognition control unit 41 measures the position (r, theta) at N measurement positions i 、
) I = 1-N, N identified radiation gains G are recorded after pattern identification is performed i＝1～N And polar angle theta of N measurement positions i＝1～N And azimuth angle
The identification control unit 41 further determines the polar angle θ of the N strokes i＝1～N And azimuth of N pens
As two perpendicular axes of a two-dimensional image (e.g. the X axis is the polar angle theta) i＝1～N The Y-axis is the azimuth angle
And, each polar angle θ) i To each azimuth angle
Both correspond to an identification radiation gain G i Identification of radiation gain G i The size of the antenna 2 is displayed by color gradation, so that the identification control unit 41 generates a detection pattern diagram roughly displaying the radiation pattern distribution of the antenna 2.
The big data storage unit 42 further stores a plurality of reference patterns, which correspond to a plurality of antennas with different radiation patterns, including a monopole antenna, a dipole antenna, an omnidirectional antenna, and a high-directivity array antenna, but not limited thereto. Each reference pattern includes a plurality of different polar angles theta of spherical coordinates j A plurality of different azimuth angles
And a plurality of gains G j In the preferred embodiment, the two perpendicular axes of each reference pattern are polar angles θ j And azimuth angle
Each polar angle theta j To each azimuth angle
Both of which correspond to a reference gain G j These reference gains G j Is displayed in a color gradation.
The identification control unit 41 is further electrically connected to the big data storage unit 42 to read the plurality of reference pattern diagrams, compare the detected pattern diagram with the reference pattern diagrams, and select one of the reference pattern diagrams that is most similar to the detected pattern diagram, where the antenna type corresponding to the most similar reference pattern diagram is the closest radiation type of the antenna to be tested 2, and the identification control unit 41 further generates an identification signal corresponding to the type of the antenna to be tested 2.
The moving part 32 of the electric wave measuring device 3 further receives the identification signal, and determines the measurement range of the standard antenna 31 for performing gain measurement on the antenna 2 to be measured and the measurement point number in the measurement range according to the identification signal.
For example, when the selected antenna type corresponding to the reference pattern most similar to the detection pattern is an array antenna having a single main beam, the measurement range may be only a portion of a sphere covering the main beam, such as 1/4 sphere, 1/8 sphere, or polar angle θ and azimuth angle θ
A defined measurement range (r, theta) 1 <θ<θ 2 、ψ 1 <ψ<ψ 2 ) Instead of measuring the whole spherical surface as in the conventional technique, the measuring time can be shortened relatively, even in the case ofUnder the fixed number of measurement points (the number of measurement points is positively related to the measurement time), the measurement range can be reduced for the antenna 2 to be measured with higher directivity, and the measurement range is increased for the antenna 2 to be measured with lower directivity, because the antenna with higher directivity represents that the beam width is narrower, the measurement range can be reduced, but the measurement precision can be maintained as the adjacent measurement points are closer, and conversely, the measurement range is relatively increased as the beam width is wider as the antenna with lower directivity represents, but the measurement points adjacent to each other can be relatively far away without influencing the measurement precision.
In summary, the present invention utilizes the intelligent device 4 to identify the type of the antenna 2 to be measured, and the electric wave measuring device 3 further determines the measuring range and the number of measuring points in the measuring range when performing gain measurement on the antenna 2 to be measured according to the identification signal, which can reduce the measuring time and also take into account the measuring accuracy, thereby solving the disadvantages of the conventional techniques.
The above description is only an example of the present invention, and is not intended to limit the scope of the present invention.
Reference numerals
1: measurement sampling point
2: antenna to be tested
3: electric wave measuring device
31: standard antenna
32: moving part
33: network analyzer
4: intelligent device
41: identification control unit
42: big data storage unit
51 to 56: measuring position
Claims (10)
1. An antenna intelligent measurement system for measuring radiation parameters of an antenna to be measured, comprising:
the electric wave measuring device comprises a standard antenna and a moving part, wherein the standard antenna is arranged on the moving part, and the moving part is controlled to link the standard antenna to a plurality of measuring positions in space so as to enable the standard antenna to carry out gain measurement on the antenna to be measured; and
an intelligent device electrically connected with the electric wave measuring device and recording each measuring position, calculating and recording an identification radiation gain of the antenna to be measured corresponding to each measuring position, and generating a detection pattern according to the plurality of measuring positions and the plurality of identification radiation gains,
the intelligent device further stores a plurality of reference pattern diagrams, the plurality of reference pattern diagrams respectively correspond to a plurality of antennas with different radiation patterns,
the intelligent device further compares the detection pattern with the plurality of reference patterns to generate an identification signal corresponding to the type of the antenna to be detected,
the electric wave measuring device further receives the identification signal, determines a measuring range of the standard antenna for gain measurement of the antenna to be measured according to the identification signal, and determines the number of measuring points in the measuring range.
2. The system of claim 1, wherein the intelligent device comprises an identification control unit electrically connected to the moving member for controlling the moving member to move to each measurement position (r, θ) i 、ψ i ) And recording each measured position (r, theta) i 、ψ i )，
The identification control unit is electrically connected with the standard antenna to calculate and record the position of the standard antenna at each measuring position (r, theta) i 、ψ i ) The identification radiation gain G of the antenna to be tested i ，
The identification control unit records the polar angle theta of N measuring positions i To the azimuth angle psi i And recording N identified radiation gains G i ，
The identification control unit further determines the polar angle theta of the N pen i＝1～N And the azimuth angle psi of the N pens i＝1～N Respectively as two perpendicular axes of the detection pattern, and N identification radiation gains G i Is displayed separately corresponding to the color level of the detection field pattern,
and, each polar angle θ i To each azimuth angle psi i Both of which correspond to the identified radiation gain G i The parameter i =1 to N, and the parameter N is a positive integer, where the parameter r is a fixed distance between the standard antenna and the antenna to be measured.
3. The system of claim 2, wherein the parameter N is a positive integer greater than or equal to 6.
4. The system of claim 3, wherein when N =6, the 6 measurement positions are (r, θ) respectively 1 ＝90°、ψ 1 ＝0°)、(r、θ 2 ＝90°、ψ 2 ＝90°)、(r、θ 3 ＝90°、ψ 3 ＝180°)、(r、θ 4 ＝90°、ψ 4 ＝270°)、(r、θ 5 ＝0°、ψ 5 ) And (r, theta) 6 ＝180°、ψ 6 ) Wherein, the parameter r is a fixed distance between the standard antenna and the antenna to be tested.
5. The system of claim 3, wherein when the parameter N =14, the 14 measurement positions are (r, θ) respectively 1 ＝90°、ψ 1 ＝0°)、(r、θ 2 ＝90°、ψ 2 ＝90°)、(r、θ 3 ＝90°、ψ 3 ＝180°)、(r、θ 4 ＝90°、ψ 4 ＝270°)、(r、θ 5 ＝0°、ψ 5 )、(r、θ 6 ＝180°、ψ 6 )、(r、θ 7 ＝45°、ψ 7 ＝45°)、(r、θ 8 ＝45°、ψ 8 ＝135°)、(r、θ 9 ＝45°、ψ 9 ＝225°)、(r、θ 10 ＝45°、ψ 10 ＝315°)、(r、θ 11 ＝135°、ψ 11 ＝45°)、(r、θ 12 ＝135°、ψ 12 ＝135°)、(r、θ 13 ＝135°、ψ 13 ＝225°)、(r、θ 14 ＝135°、ψ 14 ＝315 deg.), wherein the parameter r is a fixed distance between the standard antenna and the antenna under test.
6. The system of claim 2, wherein the smart device further comprises a big data storage unit for storing the plurality of reference pattern maps.
7. The system of claim 6, wherein the reference patterns correspond to different types of antennas, respectively, and comprise: monopole antennas, dipole antennas, omni-directional antennas, and highly directional array antennas.
8. The system of claim 6, wherein the identification control unit is further electrically connected to the big data storage unit for reading the plurality of reference patterns, comparing the detected pattern with the plurality of reference patterns to select one of the plurality of reference patterns that is most similar to the detected pattern, and further generating the identification signal.
9. The system of claim 1, wherein the two perpendicular axes of each reference pattern are polar angles θ j And azimuth angle psi j Each polar angle θ j To each azimuth angle psi j Both of which correspond to a reference gain G j The reference gain G j The size of (2) is to distinguish the display in color gradation.
10. The system of claim 2, wherein the electrical wave measurement device further comprises a network analyzer electrically connected between the standard antenna and the identification control unit.
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