CN213242795U - Probe antenna array and device for millimeter wave array antenna calibration - Google Patents
Probe antenna array and device for millimeter wave array antenna calibration Download PDFInfo
- Publication number
- CN213242795U CN213242795U CN202022118171.8U CN202022118171U CN213242795U CN 213242795 U CN213242795 U CN 213242795U CN 202022118171 U CN202022118171 U CN 202022118171U CN 213242795 U CN213242795 U CN 213242795U
- Authority
- CN
- China
- Prior art keywords
- antenna
- probe
- array
- calibration
- antennas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a probe antenna array for millimeter wave array antenna calibration, probe antenna including a plurality of array arrangements, the probe antenna of adjacent row staggers and arranges, one of them row of probe antenna in the probe antenna of adjacent row corresponds respectively with the odd number row antenna position that awaits measuring in the antenna array that awaits measuring, the even number row antenna position that awaits measuring in another row of probe antenna and the antenna array that awaits measuring corresponds respectively, when the calibration, the mode that adjacent row's probe antenna adopted progressive movement calibrates the antenna that awaits measuring of odd number row and even number row in proper order, the probe antenna of adjacent row staggers to arrange and can reduce the influence of each other between the adjacent antenna, thereby make the amplitude phase place that detects more accurate. A plurality of probes are surveyed simultaneously and can be accomplished the calibration with minimum location number of times, and is more high-efficient, so the utility model provides a probe antenna array, more current calibration method, the precision is high and simple high-efficient.
Description
Technical Field
The utility model belongs to the design field of antenna especially relates to a probe antenna array and device for millimeter wave array antenna calibration.
Background
With the development of the 5G communication industry, future wireless communication systems face the bottleneck problems of shortage of traditional spectrum resources and explosive increase of wireless service requirements, millimeter wave communication with abundant available spectrum resources becomes an effective choice for next generation wireless broadband cellular communication, and a millimeter wave frequency band has the advantages of high transmission speed, small size and the like, but also has the defects of high loss, sensitivity to the surrounding environment and the like, and brings huge challenges to the design of millimeter wave antennas. The amplitude phase of an output signal of a chip system at the front end of a millimeter wave is difficult to accurately control at present, so that a millimeter wave antenna array cannot achieve ideal beam forming, a coupler is added in front of an antenna radio frequency port to calibrate the amplitude phase usually adopted by Sub-6G, but the method is not suitable for millimeter waves and is limited by size and processing precision, and the effect of calibrating the millimeter wave array is poor.
Therefore, a calibration probe antenna with high precision, low error, simplicity and high efficiency needs to be provided, amplitude and phase calibration is performed on the millimeter wave antenna by using a near-field detection mode, and the calibration probe antenna has great significance for future millimeter wave application.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a probe antenna array and device for millimeter wave array antenna calibration has designed a probe antenna and has carried out amplitude phase calibration at the mode that millimeter wave array antenna radiation end adopted near field detection, and the precision is high and simple high-efficient, provides a solution for millimeter wave array antenna calibration.
In order to solve the above problem, the technical scheme of the utility model is that:
a probe antenna array for millimeter wave array antenna calibration is disclosed, wherein the millimeter wave array antenna comprises a plurality of antennas to be tested which are arranged in an array manner, and comprises a plurality of probe antennas which are arranged in an array manner, one side of each probe antenna is connected with a radio frequency connector, and the antennas to be tested are arranged on one sides of the probe antennas, which are far away from the radio frequency connectors;
the probe antennas in adjacent rows are arranged in a staggered mode, one row of the probe antennas in the adjacent rows corresponds to odd-numbered rows of the antennas to be detected in the antenna array to be detected in position, the other row of the probe antennas corresponds to even-numbered rows of the antennas to be detected in position, and during calibration, the probe antennas in the adjacent rows sequentially calibrate the antennas to be detected in the odd-numbered rows and the even-numbered rows in a progressive moving mode.
Preferably, the probe antenna is a PCB antenna.
Preferably, the PCB antenna includes a substrate, the substrate has a first surface and a second surface opposite to each other, a first loop antenna is attached to the first surface of the substrate, a second loop antenna is attached to a position on the second surface of the substrate corresponding to the first loop antenna, and the first loop antenna and the second loop antenna are communicated with each other through a plurality of metal via holes.
Based on the same utility model discloses think, the utility model discloses still provide a device for millimeter wave array antenna calibration, include:
the probe antenna array described above;
the positioning fixture comprises a base, wherein two guide rails which are arranged in parallel are arranged on the upper surface of the base, two ends of the probe antenna array are respectively arranged on the two guide rails in a corresponding and slidable mode, a through calibration window is formed in the middle of the two guide rails, the millimeter wave array antenna is placed below the calibration window during calibration, the antenna to be tested faces one side of the probe antenna array and is placed, and the probe antenna array sequentially completes calibration of the antenna to be tested through sliding.
Preferably, a plurality of screens are arranged on the guide rail according to the arrangement distance of the antenna to be detected, and are used for sliding positioning of the probe antenna array.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
1) the utility model provides a probe antenna array for millimeter wave array antenna calibration, probe antenna including a plurality of array arrangements, the probe antenna of adjacent row staggers and arranges, one of them row of probe antenna in the probe antenna of adjacent row corresponds respectively with the odd number row antenna position that awaits measuring in the antenna array that awaits measuring, the even number row antenna position that awaits measuring in another row of probe antenna and the antenna array that awaits measuring corresponds respectively, when the calibration, the mode that adjacent row's probe antenna adopted progressive movement calibrates the antenna that awaits measuring of odd number row and even number row in proper order, the probe antenna of adjacent row staggers to arrange and can reduce the influence of each other between the adjacent antenna, thereby make the amplitude phase place that detects more accurate. A plurality of probes are surveyed simultaneously and can be accomplished the calibration with minimum location number of times, and is more high-efficient, so the utility model provides a probe antenna array, more current calibration method, the precision is high and simple high-efficient.
Drawings
Fig. 1 is a structural diagram of a probe antenna array for millimeter wave array antenna calibration according to an embodiment of the present invention;
FIG. 2 is a block diagram of a single probe antenna and RF connector;
FIG. 3 is a block diagram of a single probe antenna;
fig. 4 is a structural diagram of an apparatus for calibrating a millimeter wave array antenna according to an embodiment of the present invention;
fig. 5 is a diagram of a test procedure for an apparatus for millimeter wave array antenna calibration.
Description of reference numerals:
1: a probe antenna array; 11: a probe antenna; 111: a substrate; 112: a first loop antenna; 113: a second loop antenna; 114: a metal via; 2: a radio frequency connector; 3: a millimeter wave array antenna; 31: an antenna to be tested; 4: positioning a clamp; 41: a base; 411: calibrating a window; 42: a guide rail; 421: and (6) blocking.
Detailed Description
The probe antenna array and the apparatus for millimeter wave array antenna calibration according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Example one
Referring to fig. 1 to 5, in the present embodiment, a probe antenna array for millimeter wave array antenna calibration is provided, where a millimeter wave array antenna 3 includes a plurality of antennas to be tested 31 arranged in an array, a probe antenna array 1 includes a plurality of probe antennas 11 arranged in an array, one side of each probe antenna 11 is connected to a radio frequency connector 2, and the antenna to be tested 31 is disposed on one side of the probe antenna 11 away from the radio frequency connector;
referring to fig. 1, probe antennas 11 in adjacent rows are arranged in a staggered manner, and probe antennas 11 may be any other form of antenna, such as a PCB antenna, a coil antenna, or a steel sheet antenna, and not limited herein, for specific illustration, in this embodiment, referring to fig. 2, probe antennas 11 are PCB antennas, a single probe antenna 11 includes a substrate 111, substrate 111 has a first surface and a second surface opposite to each other, first loop antenna 112 is attached to the first surface of substrate 111, second loop antenna 113 is attached to the second surface of substrate 111 at a position corresponding to first loop antenna 112, first loop antenna 112 and second loop antenna 113 are communicated with each other through a plurality of metal via holes 114, and using loop antennas can reduce the performance influence on calibrated millimeter wave array antenna 3 and improve calibration accuracy;
referring to fig. 5, during calibration, one row of probe antennas 11 in adjacent rows of probe antennas 11 corresponds to odd-numbered rows of antennas 31 to be tested in the antenna array to be tested, and the other row of probe antennas 11 corresponds to even-numbered rows of antennas 31 to be tested in the antenna array to be tested, in this embodiment, the millimeter wave array antenna 3 includes thirty-two antennas 31 to be tested arranged in four rows and eight columns, the probe antenna array 1 includes twelve rows of probe antennas 11 arranged in six columns, the upper and lower rows of probe antennas 11 are staggered, the four probe antennas 11 in the middle of the lower row are aligned with the first, third, fifth and seventh rows of antennas 31 to be tested directly below the probe antenna, the four probe antennas 11 in the middle of the upper row are aligned with the second, fourth, sixth and eight rows of antennas 31 to be tested directly below the probe antenna, that is, one row of antennas 31 to be tested is calibrated by the upper and lower rows of probe antennas 11, that is, during calibration, the probe antennas 11 in adjacent rows sequentially calibrate the antennas 31 to be measured in odd-numbered rows and even-numbered rows in a progressive moving manner, and the probe antenna array 1 in this arrangement is used to calibrate the antennas 31 to be measured, which is a calibration manner that one probe antenna is used to perform left-right movement up and down compared with the prior art, the calibration efficiency of the probe antenna array 1 in this embodiment is high, and the operation is simple, and the staggered arrangement of the probe antennas in adjacent rows can reduce the mutual influence between adjacent antennas, so that the detected amplitude phase is more accurate, the accuracy is higher, and the calibration accuracy of the probe antenna array provided in this embodiment can reach: the amplitude error is less than 0.2dB, and the phase error is less than 6 degrees.
The embodiment provides a probe antenna array for calibrating a millimeter wave array antenna, which comprises a plurality of probe antennas 11 arranged in an array, wherein the probe antennas 11 in adjacent rows are arranged in a staggered manner, one row of probe antennas 11 in the adjacent rows of probe antennas 11 respectively corresponds to odd-numbered rows of antennas 31 to be tested in the antenna array to be tested, the other row of probe antennas 11 respectively corresponds to even-numbered rows of antennas 31 to be tested in the antenna array to be tested, during calibration, the probe antennas 11 in the adjacent rows sequentially calibrate the odd-numbered rows and the even-numbered rows of antennas 31 to be tested in a progressive movement manner, in the embodiment, a near-field detection manner is used for amplitude phase calibration of the millimeter wave antenna, the millimeter wave array antenna is generally highly integrated with a chip, so that amplitude phase calibration cannot be performed during chip signal output, in the embodiment, a probe antenna is designed for amplitude phase calibration at a radiation end of the millimeter wave array antenna in a near-field, the method is high in precision, simple and efficient, and provides a solution for the calibration of the millimeter wave array antenna.
Example two
Based on the same utility model concept, referring to fig. 4, this embodiment provides a device for millimeter wave array antenna calibration, including:
the probe antenna array 1 according to the first embodiment;
positioning fixture 4, including base 41, the upper surface of base 41 is equipped with two parallel guide rails 42 of putting, but probe antenna array 1's both ends correspond slidable mounting respectively on two guide rails 42, and the calibration window 411 that link up is seted up to the centre of two guide rails 42, and during the calibration, millimeter wave array antenna 3 places in calibration window 411 below, and the antenna 31 that awaits measuring places towards probe antenna array 1 one side, and probe antenna array 1 accomplishes the calibration of the antenna 31 that awaits measuring through sliding in proper order.
Preferably, the guide rail 42 is provided with a plurality of clips according to the arrangement distance of the antenna 31 to be detected, for sliding positioning of the probe antenna array 1.
Referring to fig. 5, in the present embodiment, the millimeter wave array antenna 3 includes thirty-two antennas 31 to be measured arranged in four rows and eight columns, the probe antenna array 1 includes twelve probe antennas 11 arranged in two rows and six columns, the upper and lower rows of probe antennas 11 are staggered, the four probe antennas 11 in the middle of the lower row are respectively aligned with the first, third, fifth, and seventh rows of antennas 31 to be measured directly below the lower row, the four probe antennas 11 in the middle of the upper row are respectively aligned with the second, fourth, sixth, and eight rows of antennas 31 to be measured directly below the upper row, and the guide rail 42 is provided with five clamps;
referring to fig. 5, the test procedure of the apparatus for millimeter wave array antenna calibration provided in this embodiment is as follows: each calibration antenna 11 reads the amplitude value and the phase value by detecting the antenna to be measured 31 right below the calibration antenna to calibrate, and slides from the position five to the position one in sequence as shown by an arrow in the figure, and the whole millimeter wave antenna array 3 can be calibrated by sliding the five positions of the calibration antenna array.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (5)
1. A probe antenna array for millimeter wave array antenna calibration comprises a plurality of antennas to be tested which are arranged in an array manner, and is characterized by comprising a plurality of probe antennas which are arranged in an array manner, wherein one side of each probe antenna is connected with a radio frequency connector, and the antenna to be tested is arranged on one side of the probe antenna, which is far away from the radio frequency connector;
the probe antennas in adjacent rows are arranged in a staggered mode, one row of the probe antennas in the adjacent rows corresponds to odd-numbered rows of the antennas to be detected in the antenna array to be detected in position, the other row of the probe antennas corresponds to even-numbered rows of the antennas to be detected in position, and during calibration, the probe antennas in the adjacent rows sequentially calibrate the antennas to be detected in the odd-numbered rows and the even-numbered rows in a progressive moving mode.
2. The probe antenna array for millimeter wave array antenna calibration according to claim 1, wherein the probe antenna is a PCB antenna.
3. The probe antenna array for millimeter wave array antenna calibration according to claim 2, wherein the PCB antenna comprises a substrate, the substrate has a first surface and a second surface opposite to each other, the first surface of the substrate is attached with a first loop antenna, the second surface of the substrate is attached with a second loop antenna at a position corresponding to the first loop antenna, and the first loop antenna and the second loop antenna are communicated through a plurality of metal through holes.
4. An apparatus for millimeter wave array antenna calibration, comprising:
the probe antenna array of any of claims 1 to 3;
the positioning fixture comprises a base, wherein two guide rails which are arranged in parallel are arranged on the upper surface of the base, two ends of the probe antenna array are respectively arranged on the two guide rails in a corresponding and slidable mode, a through calibration window is formed in the middle of the two guide rails, the millimeter wave array antenna is placed below the calibration window during calibration, the antenna to be tested faces one side of the probe antenna array and is placed, and the probe antenna array sequentially completes calibration of the antenna to be tested through sliding.
5. The apparatus according to claim 4, wherein the guide rail is provided with a plurality of pins for sliding positioning of the probe antenna array according to the arrangement pitch of the antenna to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022118171.8U CN213242795U (en) | 2020-09-24 | 2020-09-24 | Probe antenna array and device for millimeter wave array antenna calibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022118171.8U CN213242795U (en) | 2020-09-24 | 2020-09-24 | Probe antenna array and device for millimeter wave array antenna calibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213242795U true CN213242795U (en) | 2021-05-18 |
Family
ID=75876049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022118171.8U Active CN213242795U (en) | 2020-09-24 | 2020-09-24 | Probe antenna array and device for millimeter wave array antenna calibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213242795U (en) |
-
2020
- 2020-09-24 CN CN202022118171.8U patent/CN213242795U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111323656B (en) | High-efficiency amplitude-phase test system and test method for multi-channel passive antenna array | |
| CN109541330B (en) | Array antenna channel calibration system of plane wave simulator | |
| US10684318B1 (en) | System and method for testing analog beamforming device | |
| CN101459477B (en) | Automatic test method for mobile phone antenna radiation performance | |
| CN103856272A (en) | Method of testing wireless performance of MIMO wireless terminal | |
| CN103399305B (en) | Amplitude and phase calibration method for radio frequency channels of digital array secondary radar and antenna arrays | |
| CN104833863B (en) | The far field darkroom test system and method for a kind of high frequency phased array antenna | |
| US10164721B2 (en) | Calibration systems and methods | |
| CN111817795A (en) | Beidou radio frequency baseband product testing device | |
| CN213242795U (en) | Probe antenna array and device for millimeter wave array antenna calibration | |
| CN109890046B (en) | Method and system for testing power loss of clamp of wireless communication equipment | |
| CN111385036B (en) | Radio frequency performance test method and device of wireless equipment and tester | |
| CN109839543B (en) | System and method for testing amplitude-phase consistency of antenna | |
| CN112134011A (en) | Probe antenna array and device for millimeter wave array antenna calibration | |
| CN114690106A (en) | Calibration method of radio frequency test tool | |
| Fordham | An introduction to antenna test ranges, measurements and instrumentation | |
| EP3699612B1 (en) | Method for performing a radiated two-stage method measurement as well as measurement setup | |
| CN111693828A (en) | Transformer substation space partial discharge positioning system and method based on MLE | |
| CN115065426B (en) | Production measurement and control system and method for wireless router product | |
| CN110988822A (en) | Multi-channel SAR antenna performance detection method based on wireless single TR calibration | |
| CN102062792B (en) | Probe card | |
| US11901636B2 (en) | Compact antenna test range (CATR) alignment verification | |
| CN211478468U (en) | Antenna signal testing device and electronic equipment | |
| CN109302243B (en) | N-port network division same frequency interference resisting scanning method | |
| CN115913421A (en) | Radio frequency index measuring method, device, system, electronic equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |