TWI710772B - Antenna intelligent measuring system - Google Patents

Abstract

An antenna intelligent measuring system comprises a RF measuring device and an algorithm device. The RF measuring device comprises a standard antenna and a moving part. The moving part is controlled to carry the standard antenna to a plurality of measurement positions in the space, so that the standard antenna measures a plurality of antenna gains of an antenna under test (AUT). The algorithm device is electrically connected to the RF measuring device, and generates a detection field pattern according to the measurement positions and the plurality of antenna gains of the AUT. The algorithm device further stores a plurality of reference field patterns, wherein the reference field patterns respectively correspond to antennas of different radiation field types, and the algorithm device further compares the detection field pattern with the reference field patterns to generate a recognition signal recognizing what type of the AUT. The RF measuring device also receives the recognition signal and determines the measurement range of the AUT and the number of measurement points within the measurement range based on the recognition signal.

Description

Antenna Intelligent Measurement System

The invention relates to a measurement system; in particular, it is an intelligent measurement system for measuring the antenna radiation pattern.

Refer to Figure 1 and Figure 2. Each is a schematic diagram of a traditional antenna radiation field measurement method. Each black dot on the spherical surface represents each measurement sampling point 1, and multiple measurement sampling points 1 are used. The measured antenna gain value is plotted against the spherical coordinate information to obtain a three-dimensional radiation pattern.

The common shortcoming of these two measurement methods is: regardless of the type of antenna to be tested, omni-directional and global surface measurement are used. If you want to obtain a more accurate radiation pattern, you must increase the measurement sampling point 1 The number increases the measurement time. In other words, the accuracy of the measurement and the measurement time cannot be considered at the same time.

The above-mentioned shortcomings were not very obvious in the past 4th generation mobile communication era, but it will be highlighted in the 5th generation mobile communication, because the antennas of the 4th generation mobile communication do not exceed a few GHz. , And the antenna of the 5th generation mobile communication works in the millimeter wave frequency band of tens of GHz. Compared with the antenna used in the previous generation communication system, the antenna of the millimeter wave frequency band has higher directivity characteristics (the main beam is concentrated in a smaller Space angle range), so when measuring the radiation pattern, more intensive sampling is required to accurately construct the main beam of the radiation pattern Shape and strength, but the denser the sampling, the longer the measurement time and the lower the R&D efficiency.

Since the known method has the aforementioned problems, it is necessary to develop an intelligent measurement system that can solve the aforementioned shortcomings to measure the antenna radiation pattern.

The preferred embodiment of the antenna intelligent measurement system of the present invention is suitable for measuring the radiation parameters of an antenna to be tested. The preferred embodiment includes a radio wave measurement device and an algorithm device.

The radio wave measuring device includes 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 measurement positions in space, so that the standard antenna can measure the gain of the antenna under test.

The algorithm device is electrically connected to the radio wave measurement device, and records each measurement position, and calculates and records an identification radiation gain of the antenna to be tested corresponding to each measurement position, and based on the measurement positions and The identified radiation gains produce a detection pattern. The algorithm device further stores a plurality of reference field patterns, which respectively correspond to antennas with different radiation patterns. The algorithm device compares the detection field pattern with the reference field patterns to generate an identification signal corresponding to the type of the antenna under test. The radio wave measurement device further receives the identification signal, and according to the identification signal, determines a measurement range for the standard antenna to measure the gain of the antenna under test, and determines the number of measurement points in the measurement range.

Preferably, the algorithm device includes an identification control unit that is electrically connected to the moving part to control the moving part to move to each measurement position (r, θ _i , ψ _{i )} , and record each quantity Measurement position (r, θ _i , ψ _i ); the identification control unit is electrically connected to the standard antenna to calculate and record when the standard antenna is located at each measurement position (r, θ _i , ψ _i ), the antenna under test identification of the radiation gain G _i; the identification control means records the total measuring position N pen polar angle θ _i and the azimuth angle ψ _i, and record the identification of the N radiation gain G _i; the identification unit further controls the pen N The polar angle θ _{i =1~ N} and the azimuth angle ψ _{i =1 ~N of} N pens are respectively used as the two vertical axes of the detection field pattern, and the magnitude of the N identification radiation gains G _i corresponds to the detection The color scale of the field pattern is distinguished and displayed; and each polar angle θ _i and each azimuth angle ψ _i both correspond to the identified radiation gain G _i , the parameter i =1~ 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 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, θ ₆ =180°, ψ ₆ ), where the parameter r is a fixed distance from the standard antenna to the antenna under test.

Preferably, when the parameter N =14, the 14 measurement positions are (r, θ 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°), where the parameter r is the standard antenna to the antenna under test A fixed distance between °

Preferably, the algorithm device further includes a big data storage unit for storing the reference field patterns.

Preferably, the reference field patterns correspond to a variety of antennas with different radiation patterns, including: monopole antennas, dipole antennas, omnidirectional antennas, and high-directivity array antennas.

Preferably, the identification control unit is further electrically connected to the big data storage unit to read the reference field patterns, and compare the detection field pattern with the reference field patterns, so that the Wait for the reference field pattern to select the one that is most similar to the detection field pattern, and the antenna type corresponding to the most similar reference field pattern is the radiation type closest to the antenna under test. The identification control unit further generates the identification signal corresponding to the type of antenna to be tested°

Preferably, the two vertical axes of each reference field pattern are the polar angle θ _j and the azimuth angle ψ _j , and each polar angle θ _j and each azimuth angle ψ _j jointly correspond to a reference gain G _j , The intensities of the reference gains G _j are differentiated and displayed by color scale.

Preferably, the radio wave measuring device further includes a network analyzer electrically connected between the standard antenna and the identification control unit.

The effect of the present invention is that the radio wave measurement device determines the measurement range during gain measurement of the antenna under test and the number of measurement points in the measurement range according to the identification signal, instead of being completely ignored by the traditional technology The types of antennas to be tested are uniformly subjected to global surface measurement, so the measurement time can be reduced while the measurement accuracy can be taken into account, and the shortcomings of the traditional technology can be solved.

1‧‧‧Measurement sampling point

2‧‧‧Antenna to be tested

3‧‧‧Radio wave measuring device

31‧‧‧Standard antenna

32‧‧‧Moving Parts

33‧‧‧Network Analyzer

4‧‧‧Algorithm device

41‧‧‧Identification control unit

42‧‧‧Big Data Storage Unit

51~56‧‧‧Measurement position

Figure 1 is a schematic diagram of a traditional antenna radiation pattern measurement method.

Figure 2 is a schematic diagram of another traditional antenna radiation pattern measurement method.

Figure 3 is a schematic diagram of a preferred embodiment of the antenna smart measurement system of the present invention.

Fig. 4 is a schematic diagram of the spherical coordinates measured by the antenna to be tested in a preferred embodiment of the present invention.

Referring to Figure 3, an antenna intelligent measurement system of the present invention is suitable for measuring a to-be-tested For the radiation parameters of the antenna 2, the preferred embodiment of the antenna intelligent measurement system includes a radio wave measurement device 3 and an algorithm device 4.

The radio 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. The moving part 32 is controlled to link the standard antenna 31 to a plurality of measurement positions in space, so that the standard antenna 31 Perform gain measurement on the antenna 2 under test.

The antenna under test 2 is located at the center of a spherical coordinate, and each measurement position (r, θ , ψ ) when the radio wave measuring device 3 measures the antenna 2 under test is as shown in FIG. 4 Expressed in spherical coordinates.

When the radiation type of the antenna 2 under test is not yet known, the radio wave measuring device 3 will first perform field pattern recognition. The method for performing the field pattern recognition is: the radio wave measuring device 3 is at N preset measurement positions (r, θ _i , ψ _i ), i =1~ N , respectively, to measure the N identification radiation gains G _{i of} the antenna 2 under test. The parameter N is a positive integer greater than or equal to 6, and the parameter r is the There is a fixed distance between the standard antenna 31 and the antenna under test 2, so the N measurement positions are all located on a common spherical surface.

Referring to Figures 3 and 4, when the parameter N =6, it means that the radio wave measuring device 3 performs the measurement on the antenna 2 under test from the six directions of the front, right, back, left, up, and down of the antenna under test 2. Gain measurement, these 6 measurement positions 51, 52, 53, 54, 55, 56 are expressed in spherical coordinates as (r, θ 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, θ ₆ =180°, ψ ₆ ).

The algorithm device 4 includes an identification control unit 41 and a large data storage unit 42.

The identification control unit 41 is electrically connected to the moving part 32 to control the moving part 32 to move to each measurement position (r, θ _i , ψ _i ), and the identification control unit 41 is further electrically connected to the electric wave measuring device 3 The network analyzer 33 calculates and records an identification radiation gain G _{i of} the antenna 2 under test when the standard antenna 31 is located at each measurement position (r, θ _i , ψ _i ), and the identification control unit 41 further records Each measurement position (r, θ _i , ψ _i ). The identification control unit 41 is at N measurement positions (r, θ _i , ψ _i) , i =1~ N , after performing the field pattern identification, it will record N identification radiation gains G _{i =1~N} , and The polar angle θ _{i =1~N} and the azimuth angle ψ _{i =1~ N} of the measured position with N pens. The identification control unit 41 further pen the N polar angle θ _{i = 1 ~ N} N T and the azimuth angle ψ _{i = 1 ~ N,} respectively, as a two-dimensional image of a vertical axis (X-axis is a polar angle e.g. The value of θ _{1~ N} , the Y axis is the value of azimuth angle ψ _{1~ N} ), and each polar angle θ _i and each azimuth angle ψ _i both correspond to an identification radiation gain G _i , the identification radiation gain The size of G _i is distinguished and displayed by color scale. Therefore, the identification control unit 41 generates a detection field pattern roughly showing the radiation field distribution of the antenna 2 under test.

The big data storage unit 42 further stores a plurality of reference field patterns in advance, and the reference field patterns correspond to a variety of antennas with different radiation patterns, including monopole antennas, dipole antennas, omnidirectional antennas, and high-direction antennas. Array antenna, etc., but not limited to this. Each reference field pattern includes multiple different polar angles θ _{j of} spherical coordinates, multiple different azimuth angles ψ _j , and multiple gains G _j . In the preferred embodiment, each reference field The two vertical axes of the graph are the polar angle θ _j and the azimuth angle ψ _{j respectively} . Each polar angle θ _j and each azimuth angle ψ _j corresponds to a reference gain G _j , and the intensity of the reference gain G _j is The display is distinguished by color scale.

The identification control unit 41 is further electrically connected to the big data storage unit 42 to read the plurality of reference field patterns, and compare the detection field pattern with the reference field patterns, so that the reference pattern In the field pattern diagram, the one that is most similar to the detection field pattern is selected, and the antenna type corresponding to the most similar reference field pattern is the radiation type closest to the antenna 2 under test, and the The identification control unit 41 further generates an identification signal corresponding to the type of the antenna 2 to be tested.

The moving part 32 of the radio wave measuring device 3 further receives the identification signal, and according to the identification signal, determines a measurement range for the standard antenna 31 to measure the gain of the antenna 2 under test, and the quantity in the measurement range Number of measuring points.

For example, when the selected antenna type corresponding to the reference pattern pattern that is most similar to the detection pattern pattern is an array antenna with a single main beam, then the measurement range can only cover this Part of the spherical surface of the main beam is sufficient, such as 1/4 sphere, 1/8 sphere, or a measurement range defined by the polar angle θ and the azimuth angle ψ (r,θ ₁ < θ <θ ₂ ,ψ ₁ < ψ <ψ ₂ ), instead of global measurement like traditional technology, this can shorten the measurement time, even under a 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 under test 2 with higher directivity, and the measurement range can be increased for the antenna under test 2 with lower directivity, because the antenna with higher directivity represents the narrower beam width, so The measurement range can be reduced, but the two adjacent measurement points must be closer to maintain measurement accuracy. Conversely, the lower the directivity of the antenna represents the wider the beam width, so the measurement range is Relatively larger, but two adjacent measurement points can be relatively far away without affecting the measurement accuracy.

In summary, the present invention uses the algorithm device 4 to identify the type of the antenna 2 under test, and the radio wave measurement device 3 determines the amount of gain measurement for the antenna 2 under test according to the identification signal. The measurement range and the number of measurement points in the measurement range can not only reduce the measurement time but also take into account the measurement accuracy, so it can solve the shortcomings of the traditional technology.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

2‧‧‧Antenna to be tested

3‧‧‧Radio wave measuring device

31‧‧‧Standard antenna

32‧‧‧Moving Parts

33‧‧‧Network Analyzer

4‧‧‧Algorithm device

41‧‧‧Identification control unit

42‧‧‧Big Data Storage Unit

Claims (10)

An antenna intelligent measurement system for measuring the radiation parameters of an antenna to be tested, comprising: an electric wave measuring device, including a standard antenna and a moving part, the standard antenna is arranged on the moving part, and the moving part is Control and link the standard antenna to multiple measurement positions in space, so that the standard antenna can measure the gain of the antenna to be tested; and an algorithm device, which is electrically connected to the radio wave measurement device, and records each measurement position , And calculate and record an identification radiation gain of the antenna under test corresponding to each measurement location, and generate a detection field pattern based on the measurement locations and the identification radiation gains, and the algorithm device further stores A plurality of reference field patterns corresponding to antennas with different radiation patterns respectively. The algorithm device compares the detection pattern with the reference pattern patterns to generate a Corresponding to the identification signal of the type of antenna under test, the radio wave measurement device further receives the identification signal, and according to the identification signal, determines a measurement range in which the standard antenna performs gain measurement on the antenna under test, and determines the amount The number of measurement points in the measurement range. The antenna intelligent measurement system according to the first item of the patent application, wherein the algorithm device includes an identification control unit, and the identification control unit is electrically connected to the moving part to control the moving part to move to each measurement position (r, θ _i , ψ _i ), and record each measurement position (r, θ _i , ψ _i ), the identification control unit is electrically connected to the standard antenna to calculate and record the standard antenna at each measurement position (r, θ _i , ψ _i ), the identification radiation gain G _{i of} the antenna under test, the identification control unit records the polar angle θ _i and the azimuth angle ψ _i of the N measurement positions, and records N identification radiation gains G _i, the identification unit further controls the polar angle N T θ _{i = 1 ~ N} N T and the azimuth angle ψ _{i = 1 ~ N} are respectively detected as the vertical axis of the two field pattern, and identification of the N The size of the radiation gain G _i corresponds to the color scale of the detection field pattern to distinguish and display, and each polar angle θ _i and each azimuth angle ψ _i both correspond to the identified radiation gain G _i , the parameter i =1~ N , the parameter N is a positive integer. According to the antenna intelligent measurement system of the second item of the scope of patent application, the parameter N is a positive integer greater than or equal to 6. According to the antenna intelligent measurement system of item 3 in the scope of patent application, when the parameter N = 6, the 6 measurement positions are (r, θ 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, θ ₆ =180°, ψ ₆ ), where the parameter r is a fixed distance from the standard antenna to the antenna under test. According to the antenna intelligent measurement system of item 3 of the scope of patent application, when the parameter N = 14, the 14 measurement positions are (r, θ 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°), where, The parameter r is a fixed distance from the standard antenna to the antenna under test. According to the second antenna intelligent measurement system of the scope of patent application, the algorithm device further includes a big data storage unit storing the reference field patterns. According to the antenna intelligent measurement system of item 6 of the scope of patent application, the reference field patterns correspond to various antennas of different radiation field patterns, including: monopole antenna, dipole antenna, omnidirectional antenna, and high directivity Array antenna. According to the antenna intelligent measurement system of item 6 of the scope of patent application, the identification control unit is further electrically connected to the big data storage unit to read the reference field patterns, and compare the detection field patterns with the reference fields The pattern pattern is compared, and the one that is most similar to the detection pattern pattern is selected from the reference pattern patterns, and the identification control unit further generates the identification signal. According to the antenna intelligent measurement system of the first item in the scope of patent application, the two vertical axes of each reference field pattern are the polar angle θ _j and the azimuth angle ψ _j , each polar angle θ _j and each azimuth angle ψ Both _{j and j} jointly correspond to a reference gain G _j , and the size of the reference gain G _j is distinguished and displayed by color scale. According to the second antenna intelligent measurement system of the scope of patent application, the electric wave measurement device further includes a network analyzer electrically connected between the standard antenna and the identification control unit.

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