CN116298555A - Wide-band antenna test system and application method thereof - Google Patents

Wide-band antenna test system and application method thereof Download PDF

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Publication number
CN116298555A
CN116298555A CN202310570178.9A CN202310570178A CN116298555A CN 116298555 A CN116298555 A CN 116298555A CN 202310570178 A CN202310570178 A CN 202310570178A CN 116298555 A CN116298555 A CN 116298555A
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antenna
frequency
tested
pole double
power divider
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CN202310570178.9A
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CN116298555B (en
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苏小兵
孟亚飞
林柏涛
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Foshan Bopuda Communication Technology Co ltd
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Foshan Bopuda Communication Technology Co ltd
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/206—Switches for connection of measuring instruments or electric motors to measuring loads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a wide-band antenna test system and a use method thereof, and relates to the technical field of communication signals. The wide-band antenna test system comprises a tested antenna, a power divider, a multi-frequency combiner, a single-pole double-throw switch, a network analyzer and at least 1 intermodulation tester; the network analyzer is respectively connected with one of the fixed ends of the single-pole double-throw switch and the tested antenna, the other fixed end of the single-pole double-throw switch is connected with the load, the movable end of the single-pole double-throw switch is connected with one of the shunt ends of the power divider, the combining end of the power divider is connected with the tested antenna, the other shunt end of the power divider is connected with the combining end of the multi-frequency combiner, and each shunt end of the multi-frequency combiner is respectively connected with one intermodulation tester. The invention can effectively reduce the plugging times of the port of the antenna to be tested, greatly improve the testing efficiency and effectively protect the antenna to be tested.

Description

Wide-band antenna test system and application method thereof
Technical Field
The invention relates to the technical field of communication signals, in particular to a wide-band antenna test system and a use method thereof.
Background
At present, antennas used in the mobile communication industry, such as a base station antenna, a spotlight antenna, a room division antenna and the like, are mostly wide-band antennas, when the three-order intermodulation test is performed on the antennas, test data of at least 3-4 frequency bands are required to be obtained, meanwhile, S parameters are required to be tested, in the process of testing intermodulation of 3-4 frequency bands and the S parameters, in the prior art, an intermodulation tester (different intermodulation testers have different application ranges) and a network analyzer of different frequency bands are required to be attached for multiple times to complete an electrical index test, the number of times of plugging and unplugging of the port of the tested antenna is increased, the test efficiency is low, and the abrasion risk of the port of the tested antenna is increased.
In view of the above problems, no effective technical solution is currently available.
Disclosure of Invention
The invention aims to provide a wide-band antenna test system and a use method thereof, which can effectively reduce the plugging times of the port of an antenna to be tested, greatly improve the test efficiency and effectively protect the antenna to be tested.
In a first aspect, the present invention provides a wide-band antenna test system, including a tested antenna, a power divider, a multi-frequency combiner, a single-pole double-throw switch, a network analyzer, and at least 1 intermodulation tester;
the network analyzer is respectively connected with one of the fixed ends of the single-pole double-throw switch and the tested antenna, the other fixed end of the single-pole double-throw switch is connected with a load, the movable end of the single-pole double-throw switch is connected with one of the branch ends of the power divider, the combined end of the power divider is connected with the tested antenna, the other branch end of the power divider is connected with the combined end of the multi-frequency combiner, and each branch end of the multi-frequency combiner is respectively connected with one intermodulation tester.
According to the wide-band antenna test system provided by the invention, the tested antenna does not need to be connected with different intermodulation testers for multiple times, so that the number of plugging times of the port is reduced, the test efficiency is improved, and the tested antenna is also protected.
Further, the power divider comprises at least 1 power divider, at least 1 multi-frequency combiner and at least 1 single-pole double-throw switch, and the setting numbers of the power divider, the multi-frequency combiner and the single-pole double-throw switch are equal;
each single-pole double-throw switch is correspondingly connected with one power divider, each multi-frequency combiner is correspondingly connected with one power divider, all the single-pole double-throw switches are connected with one network analyzer, and each intermodulation tester is connected with all the multi-frequency combiners.
1 power divider, 1 multifrequency combiner and 1 single-pole double-throw switch constitute 1 set of independent circuit and the port connection of antenna under test can ensure that the measuring result of each port is accurate.
Further, the device also comprises an industrial personal computer, wherein the industrial personal computer is connected with the single-pole double-throw switch, the network analyzer and the intermodulation tester;
the industrial personal computer is used for executing the following steps:
A1. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the network analyzer;
A2. acquiring S parameters of the tested antenna and isolation of each port of the tested antenna through the network analyzer;
A3. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the load;
A4. and acquiring third-order intermodulation data of each port of the tested antenna through the intermodulation tester.
Further, the device also comprises a microwave darkroom, and the antenna to be tested is arranged in the microwave darkroom.
The microwave darkroom can prevent the antenna to be tested from clutter interference, and improves the testing precision and efficiency of the antenna to be tested.
Further, the microwave oven further comprises a pushing device, wherein the tested antenna is fixed on the pushing device, and the pushing device is used for transferring the tested antenna into the microwave oven.
The tested antenna is automatically pushed into the microwave darkroom by the pushing device controlled by the industrial personal computer, manual intervention is not needed, and labor is saved.
In a second aspect, the present invention provides a method for using a wide-band antenna test system, which is based on the above-mentioned wide-band antenna test system, and includes the following steps:
s1, acquiring the set number of the power dividers and the port number of the tested antenna;
s2, after the power divider and the tested antenna are connected according to the set number and the port number, the following steps are executed:
A1. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the network analyzer;
A2. acquiring S parameters of the tested antenna and isolation of each port of the tested antenna through the network analyzer;
A3. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the load;
A4. and acquiring third-order intermodulation data of each port of the tested antenna through the intermodulation tester.
According to the practical situation, the power divider and the tested antenna are connected through the cable, then the industrial personal computer automatically executes the test, each port of the tested antenna is only plugged and unplugged once in the whole test process, the number of plugging and unplugging times is greatly reduced, the test efficiency is improved, meanwhile, the port abrasion of the tested antenna is effectively avoided, and the protection of the tested antenna is realized.
Further, the specific steps in step S2 include:
s21, when the set number is greater than or equal to the number of ports, respectively connecting one power divider for each port of the tested antenna and executing the steps A1-A4 once;
s22, when the set number is smaller than the number of ports, connecting the power divider with the untested ports of the tested antenna for multiple times, and executing the steps A1-A4 once after each connection; the untested port refers to a port that has not been connected to any of the power splitters.
Each port of the tested antenna only needs to be plugged with a cable once, and the cable does not need to be repeatedly connected with the intermodulation tester for many times, so that the number of times of plugging is reduced, the port abrasion of the tested antenna is reduced, the tested antenna is protected, and the service life of the tested antenna is prolonged.
Further, the step S1 further includes the steps of:
s3, obtaining the maximum frequency and the minimum frequency of the test frequency band;
s4, configuring the multi-frequency combiner according to the maximum frequency and the minimum frequency, wherein the minimum value of the frequency range of the multi-frequency combiner is smaller than the minimum frequency and the maximum value is larger than the maximum frequency.
Further, the step S1 further includes the steps of:
s5, configuring the power divider according to the maximum frequency and the minimum frequency, wherein the minimum value of the frequency range of the power divider is smaller than the minimum frequency and the maximum value is larger than the maximum frequency.
The multi-frequency combiner and the power divider can be effectively applicable, and further the smooth test process is ensured.
Further, the step S2 further includes the steps of:
s6, uploading the S parameter, the isolation degree and the third-order intermodulation data to a server.
As can be seen from the above, the broadband antenna test system provided by the invention uses the power divider, the single-pole double-throw switch and the multi-frequency combiner to connect the network analyzer and the intermodulation testers as a whole, and each port of the tested antenna can be connected with the power divider only once to measure the isolation degree and the third-order intermodulation data of each port and the S parameter of the tested antenna, so that the number of times of plugging and unplugging the ports of the tested antenna is greatly reduced, the test efficiency is improved, and the tested antenna is effectively protected.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
Fig. 1 is a schematic diagram of a specific connection structure of a broadband antenna test system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of another specific connection structure of a broadband antenna test system according to an embodiment of the present invention.
Fig. 3 is a flowchart of a method for using the wide-band antenna test system according to the embodiment of the present invention.
Description of the reference numerals:
100. a measured antenna; 200. a power divider; 300. a multi-frequency combiner; 400. a single pole double throw switch; 500. a network analyzer; 600. intermodulation tester; 700. an industrial personal computer; 800. a microwave darkroom.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2, the present invention provides a wide-band antenna test system, which includes an antenna 100 to be tested, a power divider 200, a multi-frequency combiner 300, a single pole double throw switch 400, a network analyzer 500, and at least 1 intermodulation tester 600;
the network analyzer 500 is respectively connected to one of the stationary ends of the single-pole double-throw switch 400 and the tested antenna 100, the other stationary end of the single-pole double-throw switch 400 is connected to a load, the movable end of the single-pole double-throw switch 400 is connected to one of the split ends of the power divider 200, the combined end of the power divider 200 is connected to the tested antenna 100, the other split end of the power divider 200 is connected to the combined end of the multi-frequency combiner 300, and each split end of the multi-frequency combiner 300 is respectively connected to one intermodulation tester 600 (for example, 3 intermodulation testers 600,3 intermodulation testers 600 in total are connected to the multi-frequency combiner 300 in fig. 1 and 2).
In real life, in a multi-frequency communication system, intermodulation distortion caused by nonlinearity of an antenna has a serious influence on signal transceiving, so in order to reduce signal distortion, three-order intermodulation test, S-parameter (i.e., scattering parameter) test and port isolation test are often required to be performed on the antenna.
For the tested antenna 100 with a wide frequency band, a minimum of 3-4 frequency third-order intermodulation is tested, however, because the existing intermodulation tester 600 has a specified application range, one intermodulation tester 600 is difficult to cover the whole wide frequency band, so that a plurality of intermodulation testers 600 are often required to be used for testing, and when testing in the existing mode, the intermodulation tester 600 needs to be replaced repeatedly and a cable is plugged into and pulled out from the tested antenna 100 for a plurality of times, which results in complicated testing process, low efficiency and easy abrasion of ports of the tested antenna 100, and reduces the service life of the tested antenna 100.
By adopting the test system of the embodiment, all intermodulation testers 600 required to be used are connected to the multi-frequency combiner 300, the combining end of the multi-frequency combiner 300 is connected with the branching end of the power divider 200, the combining end of the power divider 200 is connected with the port of the tested antenna 100, so that the port can be subjected to three-order intermodulation test of multiple frequencies, and a cable is not required to be plugged and pulled out during the test, thereby simplifying the test process, greatly improving the test efficiency, reducing the abrasion of the port of the tested antenna 100 and prolonging the service life of the tested antenna 100.
When the S parameter of the measured antenna 100 needs to be measured, the network analyzer 500 is connected to any one of the ports of the measured antenna 100, and the S parameter of the measured antenna 100 can be obtained through the network analyzer 500.
When the isolation of each port of the measured antenna 100 needs to be measured, the network analyzer 500 is connected to each port of the measured antenna 100, and the isolation of each port of the measured antenna 100 can be obtained through the network analyzer 500.
It should be noted that, the connection manner between the network analyzer 500 and the measured antenna 100 includes a direct connection or an indirect connection:
for example, as shown in fig. 1, the network analyzer 500 is directly connected to the port of the antenna 100 to be measured through a cable, and this is that the network analyzer 500 is directly connected to the antenna 100 to be measured;
as shown in fig. 2, for example, the network analyzer 500 is connected to one of the fixed ends of the single-pole double-throw switch 400 through a cable, the movable end of the single-pole double-throw switch 400 is connected to one of the split ends of the power splitter 200 through a cable, and the combined end of the power splitter 200 is connected to the port of the antenna 100 to be measured through a cable, which is that the network analyzer 500 is indirectly connected to the antenna 100 to be measured.
In some embodiments, referring to fig. 1 and 2, the wide-band antenna test system includes at least 1 power splitter 200, at least 1 multi-frequency combiner 300, and at least 1 single-pole double-throw switch 400, and the number of power splitters 200, multi-frequency combiners 300, and single-pole double-throw switches 400 are all equal;
each single-pole double-throw switch 400 is correspondingly connected with one power divider 200, each multi-frequency combiner 300 is correspondingly connected with one power divider 200, all single-pole double-throw switches 400 are connected with one network analyzer 500, and each intermodulation tester 600 is connected with all multi-frequency combiners 300.
In this embodiment, in order to ensure accurate measurement, 1 power divider 200, 1 multi-frequency combiner 300 and 1 single-pole double-throw switch 400 form 1 set of independent lines connected with the ports of the antenna 100 to be tested, and each set of lines shares the network analyzer 500 and intermodulation tester 600, so as to realize the third-order intermodulation test and isolation test of each port.
In some practical cases, when the number of ports of the tested antenna 100 can be known in advance, a plurality of sets of circuits with the same number or more number can be set according to the number of ports of the tested antenna 100, that is, the number of ports of the tested antenna 100 is the same as the number of the power dividers 200, and under such a setting, each port of the tested antenna 100 only needs to plug one cable (each port is plugged into a cable before testing, and each port cable is unplugged after testing) in the whole testing process (including the third-order intermodulation test and isolation test of each port, and the S parameter test of the tested antenna 100).
In some practical situations, when the number of ports of the tested antenna 100 cannot be known in advance, if the number of ports of the tested antenna 100 is found to be greater than the set number of power splitters 200, the ports of the tested antenna 100 need to be tested in multiple times, for example, the tested antenna 100 includes 4 ports: A. b, C and D, and the power divider 200 is provided with 2, then the power divider 200 is connected with any two ports through the cable, and is supposed to be connected with the A and the B and complete the first test, so as to obtain the third-order intermodulation data and isolation of the A and the B ports and the S parameter of the tested antenna 100, at this time, dial out the cable of the A and the B ports, then connect the power divider 200 with the C and the D ports through the cable, complete the second test, obtain the third-order intermodulation data and isolation of the C and the D ports, dial out the cable of the C and the D ports, so as to complete all the tests of the tested antenna 100.
As can be seen from the above, the present embodiment can effectively reduce the number of plugging and unplugging of the ports of the tested antenna 100, and effectively protect the tested antenna while greatly improving the testing efficiency.
In some embodiments, referring to fig. 1 and 2, the wide band antenna test system further includes an industrial personal computer 700, where the industrial personal computer 700 is connected to the single pole double throw switch 400, the network analyzer 500, and the intermodulation tester 600;
the industrial personal computer is used for executing the following steps:
A1. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with a network analyzer;
A2. s parameters of the tested antenna and the isolation degree of each port of the tested antenna are obtained through a network analyzer;
A3. controlling the closing direction of the single-pole double-throw switch to connect all the power dividers with the load;
A4. and acquiring third-order intermodulation data of each port of the antenna to be tested through an intermodulation tester.
In this embodiment, the industrial personal computer 700 controls all the power splitters 200 to be connected with the network analyzer 500, and the network analyzer 500 is directly connected with a plurality of ports of the tested antenna 100, so that the isolation of the plurality of ports of the tested antenna 100 and the S parameter of the tested antenna 100 can be obtained through testing by the network analyzer 500.
Thereafter, the industrial personal computer 700 controls all the power splitters to be connected with a load, and the load is used for absorbing signal power, so that third-order intermodulation data of a plurality of ports of the tested antenna 100 can be obtained through testing of the intermodulation tester 600.
In some embodiments, referring to fig. 1 and 2, the wide-band antenna testing system further includes a microwave camera 800, and the antenna 100 under test is disposed within the microwave camera 800. In order to eliminate the influence of external electromagnetic interference, when testing is performed, the tested antenna 100 is placed in the microwave darkroom 800, the microwave darkroom 800 can prevent the tested antenna 100 from clutter interference, and the testing precision and efficiency of the tested antenna 100 are improved.
In some embodiments, the wide frequency antenna testing system further comprises a pushing device (not shown) on which the antenna to be tested is fixed, and the pushing device is used to transfer the antenna to be tested into the microwave darkroom 800. The pushing device is connected with the industrial personal computer 700, and the industrial personal computer 700 controls the pushing device to automatically push the antenna to be tested into the microwave darkroom 800, so that manual intervention is not needed, and labor is saved.
Referring to fig. 3, the present invention provides a method for using a wide-band antenna test system, based on the above-mentioned wide-band antenna test system, comprising the following steps:
s1, acquiring the set number of power dividers and the port number of an antenna to be tested;
s2, after connecting the power dividers and the tested antennas according to the set number and the port number, executing the following steps:
A1. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with a network analyzer;
A2. s parameters of the tested antenna and the isolation degree of each port of the tested antenna are obtained through a network analyzer;
A3. controlling the closing direction of the single-pole double-throw switch to connect all the power dividers with the load;
A4. and acquiring third-order intermodulation data of each port of the antenna to be tested through an intermodulation tester.
Based on the above embodiment, in this embodiment, before testing, the power divider 200 and the tested antenna 100 need to be connected by cables according to the number of the power dividers and the number of the ports of the tested antenna, then the industrial personal computer automatically executes the test, and each port of the tested antenna only inserts and pulls out the cable once in the whole testing process, so that the number of times of replacement and insertion is greatly reduced, the testing efficiency is improved, and meanwhile, the port abrasion of the tested antenna is effectively avoided, and the protection of the tested antenna is realized.
In certain embodiments, the specific steps in step S2 include:
s21, when the number of the set ports is greater than or equal to the number of the ports, connecting a power divider for each port of the tested antenna respectively and executing the steps A1-A4 once;
s22, when the number of the set power dividers is smaller than the number of the ports, connecting the power dividers with the untested ports of the tested antenna for multiple times, and executing the steps A1-A4 once after each connection; an untested port refers to a port that has not been connected to any one of the power splitters.
Based on the above embodiment, in this embodiment, if the number of the power splitters 200 is greater than or equal to the number of the ports of the tested antenna 100, the power splitters 200 and the tested antenna 100 can complete the test of all the ports after one connection through the cable.
If the number of the power splitters 200 is smaller than the number of the ports of the tested antenna 100, each port needs to be connected by a cable in a number of times until each port is connected with the power splitters 200 and the test is completed.
Each port of the tested antenna only needs to be plugged with a cable once, and the cable does not need to be repeatedly connected with the intermodulation tester for many times, so that the number of times of plugging is reduced, the port abrasion of the tested antenna is reduced, the tested antenna is protected, and the service life of the tested antenna is prolonged.
In certain embodiments, step S1 is preceded by the further step of:
s3, obtaining the maximum frequency and the minimum frequency of the test frequency band;
s4, configuring a multi-frequency combiner according to the maximum frequency and the minimum frequency, wherein the minimum value of the frequency range of the multi-frequency combiner is smaller than the minimum frequency and the maximum value is larger than the maximum frequency.
In this embodiment, the test frequency band refers to the whole wide frequency band of the antenna 100 to be tested, or the application range of each intermodulation tester 600, for example, including 2 intermodulation testers 600, E and F, respectively, where the application range of E is 700-800mhz and the application range of F is 800-900mhz, the configured frequency band range of the multi-frequency combiner 300 should be at least 700-900mhz, or 694-960mhz, etc., but not limited thereto, so as to ensure that the multi-frequency combiner 300 can be effectively applied, and further ensure that the test process is performed smoothly.
Specifically, for example, the frequency range of the multi-frequency combiner 300 is 694mhz-960mhz, PIM3 (@ 2x43 dBm Carrier) (dBc) is less than or equal to-165, standing wave is less than 1.3, power capacity is greater than 150w, and the connector is a 4.3-10 standard component.
In certain embodiments, step S1 is preceded by the further step of:
s5, configuring the power divider according to the maximum frequency and the minimum frequency, wherein the minimum value of the frequency range of the power divider is smaller than the minimum frequency and the maximum value is larger than the maximum frequency.
As in the above embodiment, the frequency range of the power divider 200 should be at least 700-900mhz, or 600-4000mhz, but not limited thereto, so as to ensure that the power divider 200 can be effectively applied and that the testing process is smoothly performed.
Specifically, for example, the power divider 200 has a frequency range of 600-4000mhz and PIM3 (@ 2x43 dBm Carrier) (dBc) less than or equal to-165, standing waves less than 1.3, power capacity greater than 150w, isolation less than-18 db, and connectors of 4.3-10 standard components.
In certain embodiments, step S2 is followed by the further step of:
s6, uploading the S parameter, the isolation and the third-order intermodulation data to a server.
The test result uploading server facilitates data recording and management, and meanwhile, a user can acquire the test result at any time and any place through the remote access server.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The description of the terms "one embodiment," "certain embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The wide-band antenna test system is characterized by comprising an antenna to be tested (100), a power divider (200), a multi-frequency combiner (300), a single-pole double-throw switch (400), a network analyzer (500) and at least 1 intermodulation tester (600);
the network analyzer (500) is respectively connected with one of the fixed ends of the single-pole double-throw switch (400) and the tested antenna (100), the other fixed end of the single-pole double-throw switch (400) is connected with a load, the movable end of the single-pole double-throw switch (400) is connected with one of the branch ends of the power divider (200), the combined end of the power divider (200) is connected with the tested antenna (100), the other branch end of the power divider (200) is connected with the combined end of the multi-frequency combiner (300), and each branch end of the multi-frequency combiner (300) is respectively connected with one intermodulation tester (600).
2. The wide band antenna test system of claim 1, comprising at least 1 of said power splitters (200), at least 1 of said multi-frequency combiners (300), and at least 1 of said single pole double throw switches (400), and wherein the number of settings of said power splitters (200), said multi-frequency combiners (300), and said single pole double throw switches (400) are all equal;
each single-pole double-throw switch (400) is correspondingly connected with one power divider (200), each multi-frequency combiner (300) is correspondingly connected with one power divider (200), all single-pole double-throw switches (400) are respectively connected with one network analyzer (500), and each intermodulation tester (600) is connected with all multi-frequency combiners (300).
3. The wide band antenna test system of claim 2, further comprising an industrial personal computer (700), the industrial personal computer (700) being connected to the single pole double throw switch (400), the network analyzer (500) and the intermodulation tester (600);
the industrial personal computer is used for executing the following steps:
A1. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the network analyzer;
A2. acquiring S parameters of the tested antenna and isolation of each port of the tested antenna through the network analyzer;
A3. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the load;
A4. and acquiring third-order intermodulation data of each port of the tested antenna through the intermodulation tester.
4. The wide frequency band antenna testing system of claim 1, further comprising a microwave camera (800), said antenna under test (100) being disposed within said microwave camera (800).
5. The wide frequency band antenna testing system of claim 4, further comprising a pushing device, said antenna under test being secured to said pushing device, said pushing device being configured to transfer said antenna under test into said microwave darkroom (800).
6. A method of using a wide band antenna test system according to claim 3, comprising the steps of:
s1, acquiring the set number of the power dividers and the port number of the tested antenna;
s2, after the power divider and the tested antenna are connected according to the set number and the port number, the following steps are executed:
A1. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the network analyzer;
A2. acquiring S parameters of the tested antenna and isolation of each port of the tested antenna through the network analyzer;
A3. controlling the closing direction of the single-pole double-throw switch to enable all the power dividers to be connected with the load;
A4. and acquiring third-order intermodulation data of each port of the tested antenna through the intermodulation tester.
7. The method of claim 6, wherein the specific steps in step S2 include:
s21, when the set number is greater than or equal to the number of ports, respectively connecting one power divider for each port of the tested antenna and executing the steps A1-A4 once;
s22, when the set number is smaller than the number of ports, connecting the power divider with the untested ports of the tested antenna for multiple times, and executing the steps A1-A4 once after each connection; the untested port refers to a port that has not been connected to any of the power splitters.
8. The method of claim 6, wherein the step S1 is preceded by the further step of:
s3, obtaining the maximum frequency and the minimum frequency of the test frequency band;
s4, configuring the multi-frequency combiner according to the maximum frequency and the minimum frequency, wherein the minimum value of the frequency range of the multi-frequency combiner is smaller than the minimum frequency and the maximum value is larger than the maximum frequency.
9. The method of claim 8, further comprising the step of, prior to step S1:
s5, configuring the power divider according to the maximum frequency and the minimum frequency, wherein the minimum value of the frequency range of the power divider is smaller than the minimum frequency and the maximum value is larger than the maximum frequency.
10. The method of claim 6, further comprising the step of, after step S2:
s6, uploading the S parameter, the isolation degree and the third-order intermodulation data to a server.
CN202310570178.9A 2023-05-19 2023-05-19 Wide-band antenna test system and application method thereof Active CN116298555B (en)

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