CN117896023B - Ring antenna calibration alignment device - Google Patents
Ring antenna calibration alignment device Download PDFInfo
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- CN117896023B CN117896023B CN202410291357.3A CN202410291357A CN117896023B CN 117896023 B CN117896023 B CN 117896023B CN 202410291357 A CN202410291357 A CN 202410291357A CN 117896023 B CN117896023 B CN 117896023B
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- 238000005259 measurement Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention discloses a loop antenna calibration alignment device which comprises a support frame and an alignment rod, wherein a first end of a cross rod of the alignment rod is connected with a standard antenna alignment disc, a second end of the cross rod is connected with an antenna alignment disc to be tested, the standard antenna alignment disc and the antenna alignment disc to be tested are parallel, the circle centers of the standard antenna alignment disc and the antenna alignment disc to be tested are positioned on the same central line, and the support frame and the alignment rod are mutually and vertically arranged through a fixing buckle. The device for calibrating and aligning the loop antenna has the advantages of simple structure and high stability, is suitable for calibrating the loop antenna with various sizes, and can effectively improve the calibration efficiency of the loop antenna.
Description
Technical Field
The invention belongs to the technical field of antenna measurement, and particularly relates to a loop antenna calibration alignment device.
Background
Antennas are becoming increasingly important in networks as perceived by mobile communication networks. The loop antenna is a conversion device for converting a space magnetic field into a signal in guided waves in a coverage frequency band, and the current probe method is used for measuring the magnetic field antenna coefficient of the loop antenna. In the test site. The loop antenna provided with the current probe is used as a transmitting antenna, the antenna to be measured is used as a receiving antenna, the receiving antenna and the transmitting antenna are required to be placed in parallel and are aligned in the center, and because no special aligning device is provided, the measuring mode is often used for matching the positions of the two antennas only by combining a steel ruler with naked eyes, and therefore the measuring of the loop antenna has more uncertain factors. There is therefore a need for a loop antenna calibration alignment arrangement.
Disclosure of Invention
The invention aims to provide a loop antenna calibration alignment device, two alignment discs of the device can be nested by a standard transmitting loop antenna and a loop antenna to be tested, so that the receiving and transmitting antenna surfaces are parallel and the centers are aligned, and the accurate measurement of the loop antenna is realized.
In order to solve the technical problems, the invention provides the following technical scheme:
The antenna alignment device comprises a support frame (100) and an alignment rod (200), and is characterized in that a first end of a cross rod (203) of the alignment rod (200) is connected with a standard antenna alignment disc (201), a second end of the cross rod (203) is connected with an antenna alignment disc (202) to be tested, the standard antenna alignment disc (201) and the antenna alignment disc (202) to be tested are parallel and have the center on the same center line, and the support frame (100) and the alignment rod (200) are mutually and vertically arranged through a fixing buckle (300).
Further, the supporting column (102) and the cross rod (203) are fixedly connected through a clamping groove (301), and a fixing nut (302) is arranged on the clamping groove (301) and used for adjusting the horizontal or vertical direction of the antenna.
Further, the bottom of the supporting frame (100) is a circular base (101), and the supporting columns (102) are arranged on the circular base (101) in the direction perpendicular to the ground.
Further, the supporting frame (100) is connected with the alignment rod (200) through a first through hole of the fixing buckle (300).
Further, the support column (102) is vertically fixed with the cross rod (203) through a second through hole of the fixing buckle (300).
Further, the fixation nut (302) comprises a first fixation nut and a second fixation nut, the first fixation nut adjusting the height of the cross bar, the first fixation nut being used for adjusting the front-to-back position.
Further, a plurality of through holes are formed in the antenna alignment plate (202) to be tested.
Further, the measuring method of the device comprises the following steps:
(1) Selecting a proper open field, setting an antenna to be tested as a receiving mode, and placing a standard antenna and the antenna to be tested in parallel to ensure that the centers of the standard antenna and the antenna to be tested are completely aligned;
(2) Selecting a cross rod (203) with a corresponding length for the loop antenna calibration device according to the required measurement distance; the length of the transverse rod is positively correlated with the distance between the standard antenna and the antenna to be tested;
(3) The heights of the antenna and the supporting column (102) of the loop antenna calibrating device are adjusted to enable the standard antenna and the antenna to be measured to be positioned on the same horizontal plane, the standard antenna is nested on the standard antenna aligning disc (201), the antenna to be measured is nested on the antenna aligning disc (202) to be measured, and the two antennas are ensured to be fixed on the aligning disc and the centers of the two antennas are positioned on the same axis;
(4) The antenna coefficient is obtained through distance calculation, wherein the current on the transmitting loop antenna is I 1, and the magnetic field intensity generated by the distance d is as follows:
（1）
Wherein: The unit is A, vref is the voltage of the output end of the current probe, the unit is V, Z is the transfer impedance of the current probe, and the unit is V Unit dB (m-3); ; the establishment condition is/> ,/>；/>R 1 and r 2 are standard antenna and antenna radius to be measured for angular beam; d is the center distance between the standard antenna and the antenna to be tested;
the formula of the magnetic field antenna coefficient of the loop antenna to be measured is as follows:
（2）
Wherein the method comprises the steps of For insertion loss between loop antennas,/>Units dB, S 31 and S 21 are scattering parameters, and V is the output voltage of the antenna to be tested, and unit V.
Units dB, S 31 and S 21 are scattering parameters.
The invention has the beneficial effects that:
The loop antenna calibration alignment device can be respectively nested by the receiving and transmitting antennas, and the positions of the cross bars and the support columns of the device can be changed, so that the device not only is suitable for measuring loop antennas in various frequency bands, but also effectively reduces errors in calibration alignment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a general block diagram provided by the present invention;
FIG. 2 is a side view of the device;
the antenna comprises a round base, a support column, a standard antenna alignment disk 202, an antenna alignment disk to be tested, a cross rod 203, a through hole 204, a clamping groove 301 and a knob 302, wherein the round base is 101, the support column is 102, the standard antenna alignment disk 202 is provided.
Detailed Description
The invention will be further described with reference to the drawings, which illustrate the inventive process of the invention, in order to make the objects, technical solutions and advantages of the invention more apparent.
Referring to fig. 1, there is illustrated an overall block diagram of a loop antenna calibration alignment device consisting of a support bracket assembly (100), an alignment rod assembly (200) and a fixing clasp assembly (300). The bottom of the support frame assembly (100) is a round base (101) which stands at the lowest end and is parallel to the ground, and a support column (102) is connected with the vertical base. The alignment rod assembly (200) is characterized in that two ends of a cross rod (203) are respectively connected with a standard antenna alignment disc (201) and an antenna alignment disc (202) to be tested, the two alignment discs are parallel and aligned in the center, a plurality of through holes (204) are dug in the antenna alignment disc to be tested, and the cross rod (203) is perpendicular to the support column (102); the clamping groove (301) of the fixing buckle assembly (300) is penetrated by the supporting column (102) and the cross rod (203) and is adjusted by two fixing nuts (302).
Referring to fig. 2, which is a side view of the loop antenna alignment device, a circular base (101) is arranged at the bottom and is vertical to the base, and a support column (102) is connected with the base. Two ends of the cross rod (203) are respectively connected with a standard antenna alignment disc (201) and an antenna alignment disc (202) to be detected, the two alignment discs are parallel and are aligned at the center, a plurality of through holes (204) are dug in the antenna alignment disc to be detected, and the cross rod (203) is perpendicular to the support columns (102); the support column (102) and the cross rod (203) pass through the clamping groove (301) and are adjusted by two fixing nuts (302).
The invention discloses a loop antenna calibration alignment device which consists of a support frame, an alignment rod and a fixing buckle. The bottom of the support frame is a circular base, and a support column is vertically arranged on the base; the alignment rod consists of a standard antenna alignment disc and an antenna alignment disc to be tested which are respectively connected with two ends of a cross rod, the two alignment discs are parallel and the circle center is on a vertical line, and a plurality of through holes are dug on the antenna alignment disc to be tested and used for reducing the weight balance alignment device. In addition, the alignment rod device is of a detachable design, and the cross rods with different sizes and lengths can be replaced according to different measuring distances. The fixing buckle is used for vertically fixing the support column and the cross rod, and the height and the front and back positions of the cross rod are respectively adjusted through two fixing nuts. When the loop antenna is measured, the transmitting loop antenna and the loop antenna to be measured are respectively nested on the standard antenna alignment disk and the antenna alignment disk to be measured, so that the parallel and center alignment of the two loop antennas is ensured, and the accurate measurement of the loop antenna is realized.
The measuring method of the device comprises the following steps:
(1) Selecting a proper open field, setting an antenna to be tested as a receiving mode, and placing a standard antenna and the antenna to be tested in parallel to ensure that the centers of the standard antenna and the antenna to be tested are completely aligned;
(2) Selecting a cross rod (203) with a corresponding length for the loop antenna calibration device according to the required measurement distance; the length of the transverse rod is positively correlated with the distance between the standard antenna and the antenna to be tested;
(3) The heights of the antenna and the supporting column (102) of the loop antenna calibrating device are adjusted to enable the standard antenna and the antenna to be measured to be positioned on the same horizontal plane, the standard antenna is nested on the standard antenna aligning disc (201), the antenna to be measured is nested on the antenna aligning disc (202) to be measured, and the two antennas are ensured to be fixed on the aligning disc and the centers of the two antennas are positioned on the same axis;
(4) The antenna coefficient is obtained through distance calculation, wherein the current on the transmitting loop antenna is I 1, and the magnetic field intensity generated by the distance d is as follows:
（1）
Wherein: The unit is A, vref is the voltage of the output end of the current probe, the unit is V, Z is the transfer impedance of the current probe, and the unit is V Unit dB (m-3); ; the establishment condition is/> ,/>；/>R 1 and r 2 are standard antenna and antenna radius to be measured for angular beam; d is the center distance between the standard antenna and the antenna to be tested;
the formula of the magnetic field antenna coefficient of the loop antenna to be measured is as follows:
（2）
Wherein the method comprises the steps of For insertion loss between loop antennas,/>Units dB, S 31 and S 21 are scattering parameters, and V is the output voltage of the antenna to be tested, and unit V.
The loop antenna calibration alignment device has the advantages of simple structure and high stability, is suitable for loop antenna measurement of various sizes, and can effectively improve the measurement precision and stability of the loop antenna. The loop antenna calibration alignment device has the advantages of simple structure and high stability, is suitable for loop antenna measurement of various sizes, and can effectively improve the loop antenna measurement accuracy.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. The utility model provides a loop antenna calibration aligning device, includes support frame (100) and aligning rod (200), its characterized in that, the first end of horizontal pole (203) of aligning rod (200) is connected with standard antenna aligning plate (201), the second end of horizontal pole (203) is connected with antenna aligning plate (202) to be tested, standard antenna aligning plate (201) and antenna aligning plate (202) to be tested are parallel and the centre of a circle is on same central line, support frame (100) and aligning rod (200) are mutually perpendicular setting through fixed buckle (300), fixed buckle (300) include fixation nut (302) and draw-in groove (301),
The measuring method of the device comprises the following steps:
(1) Selecting a proper open field, setting an antenna to be tested as a receiving mode, and placing a standard antenna and the antenna to be tested in parallel to ensure that the centers of the standard antenna and the antenna to be tested are completely aligned;
(2) Selecting a cross rod (203) with a corresponding length for the loop antenna calibration device according to the required measurement distance; the length of the transverse rod is positively correlated with the distance between the standard antenna and the antenna to be tested;
(3) The heights of the antenna and the supporting column (102) of the loop antenna calibrating device are adjusted to enable the standard antenna and the antenna to be measured to be positioned on the same horizontal plane, the standard antenna is nested on the standard antenna aligning disc (201), the antenna to be measured is nested on the antenna aligning disc (202) to be measured, and the two antennas are ensured to be fixed on the aligning disc and the centers of the two antennas are positioned on the same axis;
(4) The antenna coefficient is obtained through distance calculation, wherein the current on the transmitting loop antenna is I 1, and the magnetic field intensity generated by the distance d is as follows:
（1）
Wherein: The unit is A, vref is the voltage of the output end of the current probe, the unit is V, Z is the transfer impedance of the current probe, and the unit is V Unit dB (m -3); ; the establishment condition is/> ,/>；/>R 1 and r 2 are standard antenna and antenna radius to be measured for angular beam; d is the center distance between the standard antenna and the antenna to be tested;
the formula of the magnetic field antenna coefficient of the loop antenna to be measured is as follows:
（2）
Wherein the method comprises the steps of For insertion loss between loop antennas,/>The unit dB, S 31 and S 21 are scattering parameters, and V is the output voltage of the antenna to be tested, and the unit V;
the support column (102) is fixedly connected with the cross rod (203) through a clamping groove (301), and a fixing nut (302) is arranged on the clamping groove (301) and used for adjusting the horizontal or vertical direction of the antenna;
the bottom of the supporting frame (100) is a circular base (101), and the supporting column (102) is arranged on the circular base (101) in the direction perpendicular to the ground;
the support frame (100) is connected with the alignment rod (200) through a first through hole of the fixing buckle (300), the support column (102) is vertically fixed with the cross rod (203) through a second through hole of the fixing buckle (300), the fixing nut (302) comprises a first fixing nut and a second fixing nut, the height of the cross rod is adjusted by the first fixing nut, and the first fixing nut is used for adjusting the front position and the rear position of the cross rod (203).
2. The loop antenna alignment device of claim 1, wherein the antenna alignment plate (202) to be tested is provided with a plurality of through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410291357.3A CN117896023B (en) | 2024-03-14 | Ring antenna calibration alignment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410291357.3A CN117896023B (en) | 2024-03-14 | Ring antenna calibration alignment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117896023A CN117896023A (en) | 2024-04-16 |
| CN117896023B true CN117896023B (en) | 2024-06-21 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852249A (en) * | 2014-01-24 | 2014-06-11 | 昆山洺九机电有限公司 | Center correction mechanism and wobbler with same |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852249A (en) * | 2014-01-24 | 2014-06-11 | 昆山洺九机电有限公司 | Center correction mechanism and wobbler with same |
Non-Patent Citations (2)
| Title |
|---|
| 基于电流探头的标准场法环天线校准及不确定度分析;秦瑶 等;仪器仪表学报;20201015;第37-44页 * |
| 环天线校准技术研究;高刚 等;安全与电磁兼容;20140625;第63-65页 * |
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