CN205232237U - Antenna calbiration system - Google Patents
Antenna calbiration system Download PDFInfo
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- CN205232237U CN205232237U CN201520956603.9U CN201520956603U CN205232237U CN 205232237 U CN205232237 U CN 205232237U CN 201520956603 U CN201520956603 U CN 201520956603U CN 205232237 U CN205232237 U CN 205232237U
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Abstract
The utility model discloses an antenna calbiration system, include: transport record of a lorry unit and calibration signal processing unit are closed in baseband signal treater, a N antenna and radio -frequency channel, a N -1 shut, and wherein N is more than or equal to 2's integer, the baseband signal treater links to each other with each antenna and radio -frequency channel respectively, every closes transport record of a lorry unit along separate routes and sets up respectively in an antenna and radio -frequency channel, and each closes along separate routes, and the transport record of a lorry is first establishes ties in proper order, calibration signal processing unit respectively with the terminal shut of establishing ties close transport record of a lorry unit with the baseband signal treater links to each other. The space of adopting above -mentioned system can save the calbiration system reduces the structure complexity, reduces the length and the quantity of signal calibration line, reduces transmission loss simultaneously.
Description
Technical field
The utility model relates to antenna technical field, particularly relates to antenna and radio-frequency channel calibration system and method.
Background technology
Current time division duplex (TimeDivisionDuplexing, TDD) radio frequency (RF) of the every root antenna of communication system holds needs two to overlap circuit to realize transmission and receiving function, due to the fabrication error of hardware aspect, add the phase place of amplifier nonlinearity distortion and filter and the change of impedance, be difficult to ensure each interchannel circuit consistency.And the characteristic response of each radio circuit also changes along with the change of the external environment conditions such as operating frequency, time, temperature and humidity.In order to eliminate the impact of the deviation between each radio frequency reception and transmission channel on channel, ensureing the reciprocity of radio-frequency channel, needing to adopt the collimation technique of radio frequency path to ensure the consistency of different passage amplitude and phase place.
Current general calibrated channel (assuming that K passage) is made up of K antenna and radio-frequency channel, a K coupler, transceiver, calibrating signal radio frequency cable, conjunction road splitter, calibrated channel processing unit etc.Wherein close the structure that road splitter generally adopts Weir gold power splitter, the calibrating signal of each antenna and radio-frequency channel can carry out conjunction road and shunt by closing road splitter.When antenna and radio-frequency channel quantity more time, each passage is pooled to the quantity of the calibrating signal line closing road splitter and length increases greatly, produce the calibrating signal line of a large amount of duplicate paths, add the complexity of circuit layout wiring, and long cabling brings unnecessary differential loss.Secondly, the area of Weir gold power splitter own is comparatively large, and bus is longer, also can increase circuit layout wiring and the integrally-built complexity of calibrated channel, bring unnecessary loss simultaneously.
Utility model content
In view of this, the utility model embodiment provides a kind of antenna calibration system, to solve the complicated and technical problem that loss is too much of prior art alignment circuit system placement-and-routing.
The utility model embodiment provides a kind of antenna calibration system, comprising: baseband signal processor, N number of antenna and radio-frequency channel, N-1 along separate routes combiner unit and calibrating signal processing unit, wherein N be more than or equal to 2 integer; Described baseband signal processor is connected with each antenna and radio-frequency channel respectively; Described each shunt combiner unit is separately positioned in an antenna and radio-frequency channel, and each combiner unit sequential series along separate routes; Described calibrating signal processing unit is connected with described baseband signal processor with the shunt combiner unit of series connection end respectively.
Further, described antenna and radio-frequency channel comprise the connected transceiver of order and coupler, and described coupler is connected with described shunt combiner unit.
Further, the shunt combiner unit of series connection head end, is connected with two antennas and radio-frequency channel respectively.
Further, the series connection of at least two shunt combiner units forms serial array, and the quantity of described serial array is at least two; Described system also comprises closes road splitter, is connected, and is connected with described calibrating signal processing unit with each described serial array.
Further, the series connection of at least two shunt combiner units forms serial array, and the quantity of described serial array is at least two; Described system also comprises at least one main line combiner unit along separate routes, is connected respectively with described serial array, and described main line shunt combiner unit is connected to described calibrating signal processing unit.
A kind of antenna calibration system that the utility model embodiment provides, this system comprises: N number of antenna and radio-frequency channel, the baseband signal processor be connected with each antenna and radio-frequency channel, be arranged in each antenna and radio-frequency channel N-1 combiner unit and the calibrating signal processor that is connected with base band signal process with shunt combiner unit respectively along separate routes, wherein, each shunt combiner unit sequential series, series connection end is connected with calibrating signal processor.Adopt said system, each combiner unit sequential series along separate routes and be arranged at the space can saving calibration system in corresponding antenna and radio-frequency channel, reduce structure complexity, reduce length and the quantity of signal calibration line, reduce loss simultaneously.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present utility model will become more obvious:
The structural representation of the antenna calibration system that Fig. 1 provides for the utility model embodiment one;
The structural representation of the antenna that Fig. 2 provides for the utility model embodiment one and radio-frequency channel;
The structural representation of the antenna calibration system that Fig. 3 provides for the utility model embodiment two;
The structural representation of the antenna calibration system that Fig. 4 provides for the utility model embodiment three;
The flow chart of the antenna transmission calibration steps that Fig. 5 provides for the utility model embodiment four;
The flow chart of the antenna reception calibration steps that Fig. 6 provides for the utility model embodiment five.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.Be understandable that, specific embodiment described herein only for explaining the utility model, but not to restriction of the present utility model.For convenience of description, illustrate only the part relevant to the utility model in accompanying drawing but not full content.
Embodiment one
The structural representation of a kind of antenna that Fig. 1 provides for the utility model embodiment one and radio-frequency channel calibration system, as shown in Figure 1, described system comprises: baseband signal processor 101, N number of antenna and radio-frequency channel 102 and calibrating signal processing unit 103, wherein N be more than or equal to 2 integer;
Described baseband signal processor 101, is connected with each antenna and radio-frequency channel 102 respectively, for receiving and dispatching test signal between each antenna and radio-frequency channel 102;
Described system also comprises N-1 combiner unit 104 along separate routes, each shunt combiner unit 104 is separately positioned in an antenna and radio-frequency channel 102, and each combiner unit 104 sequential series along separate routes, the test signal for each antenna and radio-frequency channel 102 being received and dispatched is carried out shunt one by one or is closed road;
Calibrating signal processing unit 103, is connected with described baseband signal processor 101 with the shunt combiner unit 104 of series connection end respectively, for calibrating test signal, and feeds back to described baseband signal processor 101 and carry out compensation for calibrating errors calculating.
Exemplary, test signal is baseband signal, and concrete characteristics of signals can set according to actual conditions.When antenna and radio-frequency channel 102 are for launching, baseband signal processor 101 sends signal to described antenna and radio-frequency channel 102.When antenna and radio-frequency channel 102 are for receiving, the signal that base band signal process 101 reception antenna and radio-frequency channel 102 send.Described system also comprises N-1 shunt combiner unit 104 and connects, and the shunt combiner unit 104 of series connection head end is connected with two antennas and radio-frequency channel 102 respectively.Namely the shunt combiner unit 104 of head end of connecting is arranged in second antenna and radio-frequency channel 102, lead to first antenna and 102, second, radio-frequency channel antenna respectively 102 and next combiner unit 104 along separate routes connect.The shunt combiner unit 104 of series connection end respectively with corresponding antenna and radio-frequency channel 102, upper one along separate routes combiner unit 104 be connected with calibrating signal processing unit 103.Remaining is combiner unit 104 sequential series along separate routes, and is connected with corresponding antenna and radio-frequency channel 102.When antenna and radio-frequency channel 102 transmitting calibration, the test signal that test signal in the antenna of correspondence and radio-frequency channel 102 and the shunt combiner unit 104 of connecting send by combiner unit 104 along separate routes carries out conjunction Lu Chengyi road signal according to default conjunction road rule, sends to shunt combiner unit 104 or the calibrating signal processing unit 103 of next series connection.When antenna and radio-frequency channel receive calibration, the test signal that the shunt combiner unit 104 that combiner unit 104 receives calibrating signal processing unit 103 or series connection along separate routes sends also according to default shunt rule along separate routes, sends to the shunt combiner unit 104 of corresponding antenna and radio-frequency channel 102 and next series connection.Preset and close road rule and preset rule along separate routes and can set according to actual conditions, be not construed as limiting here.Described system also comprises calibrating signal processing unit 103, when antenna and radio-frequency channel 102 transmitting calibration, described calibrating signal processing unit 103 receives the test signal that series connection end shunt combiner unit 104 sends, and feed back to baseband signal processor 101 after calibration process is carried out to described test signal, the test signal of the test signal of reception and original transmission is compared by base band signal process 101, carries out compensation for calibrating errors calculating determine the compensation result of test signal and compensate according to comparison result.When antenna and radio-frequency channel 102 receive calibration, described calibrating signal processing unit 103 is the test signal that sends of receiving baseband signal processor 101 successively, and each test signal is carried out calibration process and is merged into the shunt combiner unit 104 that a drive test trial signal sends to series connection end, each shunt combiner unit 104 carries out along separate routes test signal one by one and sends to corresponding antenna and radio-frequency channel 102, test signal is fed back to baseband signal processor 101 by antenna and radio-frequency channel 102, the test signal of each test signal received and original transmission is compared by base band signal process 101, carry out compensation for calibrating errors calculating according to comparison result determine the compensation result of test signal and compensate.Concrete calibration rule and compensation calculation rule can set according to actual conditions, are not construed as limiting here.
Further, described antenna and radio-frequency channel 102 comprise the connected transceiver 1022 of order and coupler 1021, and described coupler 1021 is connected with described shunt combiner unit 104.
Exemplary, the structural representation of the antenna that Fig. 2 provides for the utility model embodiment one and radio-frequency channel.As shown in Figure 2, described antenna and radio-frequency channel 102 comprise the connected transceiver 1022 of order and coupler 1021.Wherein transceiver 1022 is connected with baseband signal processor 101, and coupler 1021 is connected with corresponding shunt combiner unit 104.
The antenna that the utility model embodiment one provides and radio-frequency channel calibration system, this system comprises: N number of antenna and radio-frequency channel, the baseband signal processor be connected with each antenna and radio-frequency channel, be arranged in each antenna and radio-frequency channel N-1 combiner unit and the calibrating signal processing unit be connected with baseband signal processor with shunt combiner unit respectively along separate routes, wherein, each shunt combiner unit sequential series, series connection end is connected with calibrating signal processing unit.Adopt said system, each combiner unit is along separate routes connected in series and is placed in the space that calibration system can be saved in corresponding antenna and radio-frequency channel, reduces structure complexity, reduces length and the quantity of signal calibration line, reduce loss simultaneously.
Embodiment two
The structural representation of a kind of antenna that Fig. 3 provides for the utility model embodiment two and radio-frequency channel calibration system, the basis of the calibration system that the present embodiment provides in embodiment one adds at least two serial array of being formed of combiner units series connection and close road splitter along separate routes.As shown in Figure 3, described system also comprises:
At least two shunt combiner units 104 are connected and are formed serial array 106, and the quantity of described serial array 106 is at least two;
Described system also comprises closes road splitter 105, is connected, and is connected with described calibrating signal processing unit 103 with each described serial array 106.
Exemplary, at least two shunt combiner unit 104 sequential series form a serial array 106, and each shunt combiner unit 104 in serial array 106 is arranged in corresponding antenna and radio-frequency channel 102.At least two serial array 106 are comprised in described antenna and radio-frequency channel calibration system.Described system also comprises closes road splitter 105, and the series connection end of each serial array 106 is connected with conjunction road splitter 105 respectively, namely between each serial array 106 is and connects relation.The test signal that each serial array 106 sends can be carried out conjunction road and be sent to calibrating signal processing unit 103 by conjunction road splitter 105, and the test signal that calibrating signal processing unit 103 can also be sent is carried out shunt and sent to each serial array 106.
A kind of antenna that the utility model embodiment two provides and radio-frequency channel calibration system, this system also comprises at least two serial array and closes road splitter, and described serial array comprises at least two combiner unit sequential series along separate routes.Close road splitter to be connected with each described serial array, and be connected with described calibrating signal processing unit.Adopt above-mentioned antenna and radio-frequency channel calibration system, the use of serial array and Ge Lu splitter can the quantity of antenna and radio-frequency channel in increase system, and simplied system structure simultaneously, saves space.
Embodiment three
The structural representation of a kind of antenna that Fig. 4 provides for the utility model embodiment three and radio-frequency channel calibration system, the basis of the antenna that the present embodiment provides in embodiment one and radio-frequency channel calibration system adds at least two combiner unit serial array and at least one main line combiner units along separate routes along separate routes.As shown in Figure 4, described system also comprises:
At least two shunt combiner units 104 are connected and are formed serial array 106, and the quantity of described serial array 106 is at least two;
Described system also comprises at least one main line combiner unit 107 along separate routes, is connected respectively with described serial array 106, and described main line shunt combiner unit 107 is connected to described calibrating signal processing unit 103.
Exemplary, each main line along separate routes combiner unit 107 is connected in series, and is connected with corresponding serial array 106 respectively, and namely each serial array 106 is connected in series.The main line shunt combiner unit 107 of head end is connected with two serial array 106 respectively, and the main line shunt combiner unit 107 of tail end is connected with calibrating signal processing unit 103.Each main line along separate routes combiner unit 107 can carry out shunt or conjunction road according to preset rules to test signal.When antenna and radio-frequency channel 102 transmitting calibration, the test signal received is synthesized a road by each main line along separate routes combiner unit 107 successively, when antenna and radio-frequency channel 103 receive calibration, the test signal received is divided into two-way by each main line along separate routes combiner unit 107 successively.Concrete preset rules can set according to actual conditions, is not construed as limiting here.
A kind of antenna that the utility model embodiment three provides and radio-frequency channel calibration system, this system also comprises at least two serial array and at least one main line combiner unit along separate routes, and described serial array comprises at least two combiner unit sequential series along separate routes.Each described serial array respectively with corresponding main line along separate routes combiner unit be connected, each main line along separate routes combiner unit sequential series and end is connected with described calibrating signal processing unit.Adopt above-mentioned antenna and radio-frequency channel calibration system, the use of serial array and main line combiner unit along separate routes can the quantity of antenna and radio-frequency channel in increase system, can also simplify the structure of system simultaneously, save space.
Embodiment four
The flow chart of the emission calibrating method of a kind of antenna that Fig. 5 provides for the utility model embodiment four and radio-frequency channel, the antenna that the emission calibrating method that the present embodiment provides is provided by above-mentioned any embodiment and radio-frequency channel calibration system perform.As shown in Figure 5, the method comprises:
During the calibration of S510, transmission channel, each antenna and radio-frequency channel obtain the original test signal that baseband signal processor sends, and transmit described original test signal to corresponding shunt combiner unit.
Exemplary, described antenna and radio-frequency channel comprise transceiver and coupler.Transceiver obtains the original test signal that baseband signal processor sends, and is sent to coupler, and described original test signal is coupled to corresponding shunt combiner unit by coupler.
Each original test signal merges by S520, each described shunt combiner unit successively, is formed and merges test signal, and be sent to described calibrating signal processing unit.
Exemplary, the original test signal received merges by each shunt combiner unit successively, the shunt combiner unit of series connection end exports a road and merges test signal to calibrating signal processing unit, and concrete merging rule can set according to actual conditions, is not construed as limiting here.
S530, described calibrating signal processing unit receive described merging test signal, carry out calibration process and form calibration testing signal, and feed back to described baseband signal processor.
Exemplary, calibrating signal processing unit carries out calibration process to the merging test signal received and forms calibration testing signal, and concrete calibration process rule can set according to actual conditions, is not construed as limiting here.Baseband signal processor is fed back to after forming calibration testing signal.
Described calibration testing signal and described original test signal are compared by S540, described baseband signal processor, determine compensation for calibrating errors result.
Exemplary, the calibration testing signal received and original test signal are compared by baseband signal processor, according to comparison result determination compensation for calibrating errors result, and compensate original test signal according to compensation result.
A kind of antenna that the utility model embodiment four provides and the emission calibrating method of radio-frequency channel, each antenna and radio-frequency channel obtain the original test signal of baseband signal processor transmitting and are sent to corresponding shunt combiner unit, original test signal merges by each shunt combiner unit successively, finally obtain merging test signal and be sent to calibrating signal processing unit, calibrating signal processing unit is combined test signal to carry out calibration process formation calibration testing signal and feeds back to baseband signal processor, the calibration testing signal received and original test signal are compared by baseband signal processor, and determine compensation for calibrating errors result.Adopt said method, the complexity of antenna and radio-frequency channel calibration system can be reduced, save space simultaneously, reduce loss, make calibration result more accurate.
Embodiment five
The flow chart of the reception calibration steps of a kind of antenna that Fig. 6 provides for the utility model embodiment five and radio-frequency channel, the antenna that the reception calibration steps that the present embodiment provides is provided by above-mentioned any embodiment and radio-frequency channel calibration system perform.As shown in Figure 6, the method comprises:
During the calibration of S610, receive path, calibrating signal processing unit order obtains each original test signal that baseband signal processor sends, and carries out calibration process and merge obtaining merging test signal to each original test signal, and transfers to corresponding shunt combiner unit.
Exemplary, the transmitting time of each original test signal is different, and characteristics of signals is identical, and the number of original test signal is identical with the number of antenna and radio-frequency channel.Calibrating signal processing unit order obtains each original test signal that baseband signal processor sends, calibration process carried out to each original test signal and synthesizes a rood to merging test signal, and merging test signal being transferred to the shunt combiner unit of serial array end.
Described merging test signal is carried out shunt process by S620, each described shunt combiner unit one by one, obtains calibration testing signal, and is sent to corresponding antenna and radio-frequency channel respectively.
Exemplary, combiner unit serial array receives merging test signal along separate routes, merging test signal is carried out shunt process according to the shunt rule preset by each shunt combiner unit one by one, two paths of signals is obtained after each shunt combiner unit shunt, and be sent to corresponding antenna and radio-frequency channel and next one combiner unit along separate routes respectively, the signal that each antenna and radio-frequency channel receive is calibration testing signal, and the signal of reception is divided into two-way and sends to first and second antenna and radio-frequency channel respectively by the shunt combiner unit of serial array head end.Concrete shunt rule can set according to actual conditions, is not construed as limiting here.
The described calibration testing signal obtained is sent to described baseband signal processor by S630, each described antenna and radio-frequency channel.
Exemplary, the calibration testing signal obtained along separate routes is sent to corresponding antenna and radio-frequency channel by each shunt combiner unit, coupler in each antenna and radio-frequency channel receives calibration testing signal and is coupled to transceiver, is sent to baseband signal processor by transceiver.
The described calibration testing signal received is compared with described original test signal by S640, described baseband signal processor successively, determines compensation for calibrating errors result.
Exemplary, baseband signal processor receives the calibration testing signal of each antenna and radio-frequency channel transmission, and compares with original test signal successively, determines compensation for calibrating errors result, and compensates described original test signal according to compensation result.
The reception calibration steps of a kind of antenna that the utility model embodiment five provides and radio-frequency channel, calibrating signal processing unit obtains the original test signal that baseband signal processor sends successively, and merging test signal is merged into each original test signal calibration process, send to corresponding shunt combiner unit, each shunt combiner unit is combined test signal one by one and carries out shunt, obtain each calibration testing signal and be sent to corresponding antenna and radio-frequency channel, the calibration testing signal of reception is sent to baseband signal processor by each antenna and radio-frequency channel, the calibration testing signal of reception is compared with described original test signal and is obtained compensation for calibrating errors result by baseband signal processor successively.Adopt said method, the complexity of antenna and radio-frequency channel calibration system can be reduced, save space simultaneously, reduce loss, make calibration result more accurate.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Skilled person in the art will appreciate that the utility model is not limited to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and protection range of the present utility model can not be departed from.Therefore, although be described in further detail the utility model by above embodiment, but the utility model is not limited only to above embodiment, when not departing from the utility model design, can also comprise other Equivalent embodiments more, and scope of the present utility model is determined by appended right.
Claims (5)
1. an antenna calibration system, is characterized in that, comprising: baseband signal processor, N number of antenna and radio-frequency channel, N-1 along separate routes combiner unit and calibrating signal processing unit, wherein N be more than or equal to 2 integer:
Described baseband signal processor is connected with each antenna and radio-frequency channel respectively;
Described each shunt combiner unit is separately positioned in an antenna and radio-frequency channel, and each combiner unit sequential series along separate routes;
Described calibrating signal processing unit is connected with described baseband signal processor with the shunt combiner unit of series connection end respectively.
2. system according to claim 1, is characterized in that, described antenna and radio-frequency channel comprise the connected transceiver of order and coupler, and described coupler is connected with described shunt combiner unit.
3. system according to claim 1, is characterized in that, the shunt combiner unit of series connection head end, is connected with two antennas and radio-frequency channel respectively.
4. system according to claim 1, is characterized in that,
The series connection of at least two shunt combiner units forms serial array, and the quantity of described serial array is at least two;
Described system also comprises closes road splitter, is connected, and is connected with described calibrating signal processing unit with each described serial array.
5. system according to claim 1, is characterized in that:
The series connection of at least two shunt combiner units forms serial array, and the quantity of described serial array is at least two;
Described system also comprises at least one main line combiner unit along separate routes, is connected respectively with described serial array, and described main line shunt combiner unit is connected to described calibrating signal processing unit.
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| CN201520956603.9U CN205232237U (en) | 2015-11-26 | 2015-11-26 | Antenna calbiration system |
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| CN201520956603.9U CN205232237U (en) | 2015-11-26 | 2015-11-26 | Antenna calbiration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107361A1 (en) * | 2018-11-30 | 2020-06-04 | 华为技术有限公司 | Calibration method and apparatus for radio frequency channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020107361A1 (en) * | 2018-11-30 | 2020-06-04 | 华为技术有限公司 | Calibration method and apparatus for radio frequency channel |
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Effective date of registration: 20190304 Address after: 100097 No. 308, Block C, 51 Hunan Road, Kunming, Haidian District, Beijing Patentee after: Beijing Jiutian Microstar Communication Technology Co., Ltd. Address before: 100193 Xinwei Building, Building 7, Zhongguancun Software Park, 8 Wangxi Road, Haidian District, Beijing Patentee before: Xinwei Communications Technological Co., Ltd., Beijing |