CN109845145A - A kind of radio-frequency channel calibrating installation and method - Google Patents
A kind of radio-frequency channel calibrating installation and method Download PDFInfo
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- CN109845145A CN109845145A CN201780062557.XA CN201780062557A CN109845145A CN 109845145 A CN109845145 A CN 109845145A CN 201780062557 A CN201780062557 A CN 201780062557A CN 109845145 A CN109845145 A CN 109845145A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
Abstract
The application provides a kind of radio-frequency channel calibrating installation and method, is related to field of communication technology, for improving the loop accuracy of radio-frequency channel calibration.The device includes radio frequency unit, calibration unit and processing unit, and the radio frequency unit and the calibration unit are connect with the processing unit respectively, and the calibration unit includes coupling network, and the radio frequency unit is connect by feeder line with the coupling network；Wherein, the radio frequency unit includes M transmission channel, and for sending calibration signal by M transmission channel, the M is the positive integer more than or equal to 2；The coupling network, the calibration signal for sending M transmission channel are coupled as a signal；The calibration unit further includes calibrated channel, for receiving a signal of the coupling network output by calibrated channel；The processing unit, the transmitter phase for determining M transmission channel is poor, and calibrates corresponding transmission channel based on the transmitter phase difference of M transmission channel.
Description
The present embodiments relate to field of communication technology more particularly to a kind of radio-frequency channel calibrating installation and methods.
With the fast development of the communication technology, there are more and more equipment for communication, these equipment are usually all integrated with radio-frequency module, and radio-frequency module is referred to as RF transceiver, for carrying out the reception and transmitting of signal.Wherein, a radio-frequency module can correspond to multiple radio-frequency channels, and the channel for receiving signal is properly termed as receiving channel, and channel for transmitting signals is properly termed as transmission channel.In radio-frequency module application, due to device fabrication, aging and temperature change etc., cause by different transmission channels or the same signal of receiving channel there are certain phase difference, therefore, it is necessary to calibrate to radio-frequency channel.
At present, when carrying out radio-frequency channel calibration, usually only the radio-frequency channel of radio-frequency module itself is calibrated, and radio-frequency module is connect by feeder line with antenna in practical applications, the feeder line of connection radio-frequency module and antenna also results in signal and generates certain phase difference, therefore in signals transmission, only the radio-frequency channel of radio-frequency module itself is calibrated, accuracy is lower.
Summary of the invention
The embodiment of the present invention provides a kind of radio-frequency channel calibrating installation and method, solves the problems, such as that the loop accuracy of radio-frequency channel calibration in the prior art is lower.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
First aspect, a kind of radio-frequency channel calibrating installation is provided, which includes radio frequency unit, calibration unit and processing unit, and radio frequency unit and calibration unit are connect with processing unit respectively, calibration unit includes coupling network, and radio frequency unit is connect by feeder line with coupling network；Wherein, radio frequency unit includes M transmission channel, and for sending calibration signal by M transmission channel, M is the positive integer more than or equal to 2；The calibration signal that M transmission channel is sent is coupled as a signal by coupling network；Calibration unit further includes calibrated channel, for receiving a signal of the coupling network output by calibrated channel；Processing unit, the transmitter phase for determining M transmission channel is poor, and calibrates corresponding transmission channel based on the transmitter phase difference of M transmission channel.
With reference to first aspect, in the first possible implementation of the first aspect, calibration unit further includes calibration process module, and calibration process module is for providing calibrated channel.
The possible implementation of with reference to first aspect the first, in the second possible implementation of the first aspect, calibration process module include baseband processor, filter and power amplifier.
Second aspect, a kind of radio-frequency channel calibrating installation is provided, which includes radio frequency unit, calibration unit and processing unit, and radio frequency unit and calibration unit are connect with processing unit respectively, calibration unit includes coupling network, and radio frequency unit is connect by feeder line with coupling network；Wherein, calibration unit further includes calibrated channel, for sending calibration signal by calibrated channel；Coupling network, for being N number of signal by calibration signal branch, N is more than or equal to 2
Positive integer；Radio frequency unit includes N number of receiving channel, for receiving N number of signal respectively by N number of receiving channel；Processing unit, the receiving phase for determining N number of receiving channel is poor, and the receiving phase difference based on N number of receiving channel calibrates corresponding receiving channel.
In conjunction with second aspect, in the first possible implementation of the second aspect, calibration unit further includes calibration process module, and calibration process module is for providing calibrated channel.
In conjunction with the first possible implementation of second aspect, in a second possible implementation of the second aspect, calibration process module includes baseband processor, filter and power amplifier.
The third aspect provides a kind of radio-frequency channel calibration method, is applied to radio-frequency channel calibrating installation, this method comprises: sending calibration signal by M transmission channel；The calibration signal that M transmission channel is sent is coupled as a signal, and one signal is received by calibrated channel；It determines that the transmitter phase of M transmission channel is poor, and corresponding transmission channel is calibrated based on the transmitter phase difference of M transmission channel.
In conjunction with the third aspect, in the first possible implementation of the third aspect, before receiving one signal by calibrated channel, this method further include: according to the carrier frequency point information of M transmission channel, configure the frequency point information of calibrated channel.
Fourth aspect provides a kind of radio-frequency channel calibration method, is applied to radio-frequency channel calibrating installation, this method comprises: the calibration signal sent by calibrated channel, and be N number of signal by calibration signal branch, N is the positive integer more than or equal to 2；N number of signal is distinguished by N number of receiving channel；Determine that the receiving phase of N number of receiving channel is poor, and the receiving phase difference based on N number of receiving channel calibrates corresponding receiving channel.
In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, before distinguishing N number of signal by N number of receiving channel, this method further include: according to the carrier frequency point information of N number of receiving channel, configure the frequency point information of calibrated channel.
5th aspect, a kind of equipment is provided, the equipment includes radio frequency unit, calibration unit and processor, radio frequency unit and calibration unit are connect with processing unit respectively, calibration unit includes coupling network, radio frequency unit is connect by feeder line with coupling network, radio frequency unit, radio-frequency channel calibration method provided by the first possible implementation that calibration unit and processor are used to that the equipment to be supported to execute the third aspect or the third aspect, and/or for supporting the equipment to execute radio-frequency channel calibration method provided by the first possible implementation of fourth aspect or fourth aspect.
A kind of radio-frequency channel calibrating installation provided in an embodiment of the present invention and method, the radio frequency unit that radio-frequency channel calibrating installation includes is connect by feeder line with the coupling network that calibration unit includes, when the radio-frequency channel for including to radio-frequency channel calibrating installation is calibrated, the calibrated channel that can be provided by calibration unit carries out radio-frequency channel calibration, to which the phase difference that can not only introduce to radio frequency unit itself is calibrated, the phase difference that can also be introduced to feeder line is calibrated, to improve the loop accuracy of the radio-frequency channel calibration of radio frequency unit.
Fig. 1 is a kind of connection schematic diagram of Remote Radio Unit；
Fig. 2 is a kind of structural schematic diagram of radio-frequency channel calibrating installation provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of calibration unit provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another calibration unit provided in an embodiment of the present invention；
Fig. 5 is a kind of flow chart of radio-frequency channel calibration method provided in an embodiment of the present invention；
Fig. 6 is a kind of process flow diagram of calibration signal provided in an embodiment of the present invention；
Fig. 7 is the flow chart of another radio-frequency channel calibration method provided in an embodiment of the present invention；
Fig. 8 is the process flow diagram of another calibration signal provided in an embodiment of the present invention.
Before introducing the embodiment of the present invention, first to this application involves to technical term be introduced.
Radio frequency unit, also referred to as radio circuit can be used for connecting mutiple antennas.In embodiments of the present invention, radio frequency unit can be Remote Radio Unit (Radio Remote Unit, RRU), and a RRU may include multiple transmission channels and multiple receiving channels, for example the RRU of 4T4R includes 4 transmission channels and 4 receiving channels, the RRU of 2T2R includes 2 transmission channels and 2 receiving channels.As shown in Figure 1, RRU can be connect by radio frequency connector with mutiple antennas, and multiple antenna can be multi-antenna array by taking the RRU of 4T4R as an example.Optionally, radio frequency unit includes but is not limited to filter, low-noise amplifier (English: low noise amplifier, LNA), modulus or digital-to-analogue (analogue-to-digital/digital-to-analogue, A/D or D/A) converter etc..
Calibration signal refers to the signal of the phase alignment for carrying out radio-frequency channel.Wherein, calibration signal can be random signal or be pseudo noise (Pseudo-Noise, PN) signal.
Fig. 2 is a kind of structural schematic diagram of radio-frequency channel calibrating installation provided in an embodiment of the present invention, as shown in Figure 2, the radio-frequency channel calibrating installation includes radio frequency unit 101, calibration unit 102 and processing unit 103, radio frequency unit 101 and calibration unit 102 are connect with processing unit 103 respectively, calibration unit 102 includes coupling network 1021, and radio frequency unit 101 is connect by feeder line with coupling network 1021.
In embodiments of the present invention, radio-frequency channel calibrating installation shown in Fig. 2 can be used for calibrating the transmission channel of radio frequency unit 101, described in detail below.
Wherein, radio frequency unit 101 includes M transmission channel, and for sending calibration signal by M transmission channel, M is the integer more than or equal to 2.In practical applications, radio frequency unit 101 can be radio frequency remote unit RRU, RRU can specifically carry out modulation /demodulation, Digital up and down convert, A/D, D/A conversion of optical transport etc., and complete the transformation of intermediate-freuqncy signal to radiofrequency signal, power amplifier filtering processing is carried out again, finally launches radiofrequency signal by antenna.Specifically, radio frequency unit 101 is connect by feeder line with the coupling network 1021 of calibration unit 102, radio frequency unit 101 sends calibration signal by M transmission channel, which is transmitted to the coupling network 1021 of calibration unit 102 by feeder line.
Coupling network 1021, the calibration signal for sending M transmission channel are coupled as a signal, and calibration unit 102 further includes calibrated channel, for receiving the signal that coupling network 1021 exports by the calibrated channel.As shown in figure 3, being the structural schematic diagram of calibration unit 102, calibration unit 102 may include coupling 1021 and calibration process module 1022, and calibration process module 1022 is for providing calibrated channel.Wherein, coupling network 1021 is used to for the calibration signal that M transmission channel is sent being coupled as a signal, and calibration process module 1022 is used to be filtered the signal that coupling obtains and power amplifier is handled.
Specifically, as shown in figure 4, calibration process module 1022 may include baseband processor, filter and power amplifier.In Fig. 4, by taking radio frequency unit 101 includes 4 transmission channels as an example, the coupling network 1021 in calibration unit 102 is used to input 4 calibration signals being coupled as a signal.Filter in calibration process module 1022 is used to be filtered a signal of coupling output, and power amplifier is used to carry out power amplification to filtered signal, and baseband processing unit is for carrying out filtered signal the processing such as to sample.
Processing unit 103, the transmitter phase for determining M transmission channel is poor, and calibrates corresponding transmission channel based on the transmitter phase difference of M transmission channel.Wherein, processing unit 103 can be baseband processing unit (Base band Unit, BBU), the calibration signal that obtained signal and M transmission channel are sent can be specifically sampled according to calibration unit 102, it determines that the transmitter phase of M transmission channel is poor, corresponding transmission channel is calibrated according to the transmitter phase difference of the M transmission channel later.
Optionally, calibration unit 102 can be used for determining that the transmitter phase of M transmission channel is poor, and the transmitter phase difference for determining M transmission channel is sent to processing unit 103 after determination, corresponding transmission channel is calibrated according to the transmitter phase difference of the M transmission channel by processing unit 103.
Optionally, the calibration signal that radio frequency unit 101 is sent can be the generation of processing unit 103, and the calibration signal of generation is sent to radio frequency unit 101.
In channel calibrating installation provided in an embodiment of the present invention, radio frequency unit sends calibration signal by M transmission channel, coupling network is used to the calibration signal that M transmission channel is sent being coupled as a signal, calibration unit receives a signal of coupling network output by calibrated channel, processing unit determines that the transmitter phase of M transmission channel is poor, and corresponding transmission channel is calibrated based on the transmitter phase difference of M transmission channel, when calibrated channel to be provided by calibration unit carries out radio-frequency channel calibration, the phase difference that can not only introduce to radio frequency unit itself is calibrated, the phase difference that can also be introduced to feeder line is calibrated, to improve the loop precision of radio-frequency channel calibration.
In embodiments of the present invention, radio-frequency channel calibrating installation shown in Fig. 2 can be used for calibrating the receiving channel of radio frequency unit 101, described in detail below.
Wherein, as shown in figure 3, being the structural schematic diagram of calibration unit 102, calibration unit 102 can be with coupling network 1021 and calibration process module 1022, and calibration process module 1022 is for providing calibrated channel.Specifically, calibration process module 1022 sends calibration signal for providing calibrated channel, and by calibrated channel, and coupling network 1021 is used to calibration signal function being divided into N number of signal, and N number of signal is transmitted to radio frequency unit 101 by feeder line, N is the integer more than or equal to 2.
Specifically, as shown in Figure 4, calibration process module 1022 may include baseband processor, filter and power amplifier, baseband processor can be used for carrying out intermediate frequency conversion to calibration signal, power amplifier is used to carry out power amplification to calibration signal, and filter is for being filtered amplified signal.It is illustrated so that radio frequency unit includes 4 receiving channels as an example in Fig. 4, coupling network 1021 is for by treated, calibration signal function to be divided into 4 signals, 4 signals are transmitted to radio frequency unit 101 by feeder line later by one receiving channel of the corresponding radio frequency unit 101 of each signal.
It should be noted that, in transmission channel calibration and receiving channel calibration, calibration unit 102 can be Fig. 3 or calibration unit shown in Fig. 4, that is its hardware composition in transmission channel calibration and receiving channel calibration of calibration unit 102 is consistent, the difference is that the process flow to calibration signal is different.
Radio frequency unit 101 includes N number of receiving channel, for receiving N number of signal by N number of receiving channel.Specifically, radio frequency unit 101 can be connect by feeder line with coupling network 1021.When the calibration signal that calibration unit 102 is sent by calibrated channel is after coupling network 1021 divides for N number of signal, which is transmitted to radio frequency unit 101 by feeder line, and radio frequency unit 101 receives N number of signal by N number of receiving channel respectively.In practical applications, radio frequency unit 101 can be RRU, and the process flow when signal processing flow when receiving signal and transmitting signal, on the contrary, referring specifically to associated description, the embodiment of the present invention no longer illustrates herein.
Processing unit 103, the receiving phase for determining N number of receiving channel is poor, and based on N number of receiving channel
Receiving phase difference calibrates corresponding receiving channel.Wherein, processing unit 103 can be baseband processing unit BBU, the calibration signal that the calibration signal and radio frequency unit 101 that can be specifically sent according to calibration unit 102 are received by N number of receiving channel, it determines that the receiving phase of N number of receiving channel is poor, corresponding receiving channel is calibrated according to the receiving phase difference of N number of receiving channel later.
Optionally, calibration unit 102 can be used for determining that the receiving phase of N number of receiving channel is poor, and the receiving phase difference of N number of receiving channel is sent to processing unit 103 after determination, corresponding receiving channel is calibrated according to the receiving phase difference of N number of receiving channel by processing unit 103.
Optionally, the calibration signal that calibration unit 102 is sent can be the generation of processing unit 103, and the calibration signal of generation is sent to calibration unit；Alternatively, calibration unit 102 can also include calibration signal generator, calibration unit 102 generates calibration signal by calibration signal generator, and it is not limited in the embodiment of the present invention.
In channel calibrating installation provided in an embodiment of the present invention, calibration unit sends calibration signal by calibrated channel, calibration signal branch is N number of signal by coupling network, radio frequency unit receives N number of signal by N number of receiving channel respectively, processing unit determines that the receiving phase of N number of receiving channel is poor, and the receiving phase difference based on N number of receiving channel calibrates corresponding receiving channel, when calibrated channel to be provided by calibration unit carries out radio-frequency channel calibration, the phase difference that can not only introduce to radio frequency unit itself is calibrated, the phase difference that can also be introduced to feeder line is calibrated, to improve the loop accuracy of radio frequency unit receiving channel calibration.
Fig. 5 is a kind of flow chart of radio-frequency channel calibration method provided in an embodiment of the present invention, and referring to Fig. 5, this method is applied in the calibrating installation of radio-frequency channel, specifically includes following steps.
Step 301: calibration signal being sent by M transmission channel, M is the integer more than or equal to 2.
Wherein, when needing to calibrate M transmission channel, calibration signal can be sent by the M transmission channel.The calibration signal can be random signal or be PN signal.For example, the calibration signal can be the superposition of 10ms triggering feed-in small signal and service signal, the feed-in time can be for several seconds or longer.Alternatively, the calibration signal is the superposition of 10ms triggering feed-in small signal and big signal, the feed-in time can be several hundred microseconds to several milliseconds.
Specifically, can be as shown in Figure 6 by the process that M transmission channel sends calibration signal.Calibration signal is obtained with the radio frequency unit of radio-frequency channel calibrating installation, which can be processing unit and be sent to radio frequency unit.The calibration signal is handled by the processing chip (for example, FPGA) that base band cpri interface enters radio frequency unit, obtains intermediate frequency (Intermediate Frequency, IF) digital signal.Analog signal is converted by digital analog converter (Digital to Analog Converter, DAC) after the treatment, is sent later by transmitting line TX and duplexer DUP.
Step 302: the calibration signal that M transmission channel is sent being coupled as a signal, and a signal is received by calibrated channel.
When radio-frequency channel calibrating installation sends calibration signal by M transmission channel, the calibration signal that M transmission channel is sent can be coupled as a signal by coupling network by radio-frequency channel calibrating installation, and receive a signal by calibrated channel.Specifically, the calibration unit of radio-frequency channel calibrating installation can be as shown in Figure 6 by the process that calibrated channel receives the calibration signal that M transmission channel is sent.The calibration signal that M transmission channel is sent is coupled as a signal by calibration unit, by analog-digital converter (Analog to Digital Converter after receiving circuit RX, ADC) it is converted into digital signal, later by carrying out digital sampling processing after IF, to obtain final received signal.
Step 303: determining that the transmitter phase of M transmission channel is poor, and the transmitter phase based on M transmission channel
Difference calibrates corresponding transmission channel.
Wherein, after receiving the calibration signal that M transmission channel is sent by calibrated channel when radio-frequency channel calibrating installation, it can determine that the transmitter phase of M transmission channel is poor according to the calibration signal of M transmission channel transmission and the signal received.Later, corresponding transmission channel can be calibrated according to the transmitter phase difference of the M transmission channel.
Specifically, radio-frequency channel calibrating installation determines that the process of the transmitter phase difference of M transmission channel can be gone to execute by calibration unit, it can also go to execute by independent processing unit, when determining the transmitter phase difference of M transmission channel by calibration unit, calibration unit can send it to processing unit after determination.Finally, corresponding transmission channel is calibrated based on the transmitter phase difference of M transmission channel by processing unit.For example, as shown in fig. 6, the processing unit of radio-frequency channel calibrating installation can be BBU, the corresponding transmission channel of transmitter phase difference calibration by BBU based on M transmission channel.
Further, before radio-frequency channel calibrating installation carries out radio-frequency channel calibration, it can also be according to the carrier frequency point information of M transmission channel, configure the frequency point information of calibrated channel, to improve the reception power that calibrated channel receives the calibration signal that transmission channel is sent, and then improve the loop accuracy of radio-frequency channel calibration.
Radio-frequency channel calibration method provided in an embodiment of the present invention, calibration signal is sent by M transmission channel, the calibration signal that M transmission channel is sent is coupled as a signal, and a signal is received by calibrated channel, determine that the transmitter phase of M transmission channel is poor later, and corresponding transmission channel is calibrated based on the transmitter phase difference of M transmission channel, when calibrated channel to be provided by calibration unit carries out radio-frequency channel calibration, the phase difference that can not only introduce to radio frequency unit itself is calibrated, the phase difference that can also be introduced to feeder line is calibrated, to improve the loop accuracy of radio frequency unit transmission channel calibration.
Fig. 7 is the flow chart of another radio-frequency channel calibration method provided in an embodiment of the present invention, and referring to Fig. 7, this method is applied in the calibrating installation of radio-frequency channel, specifically includes following steps.
Step 401: the calibration signal sent by calibrated channel, and be N number of signal by calibration signal branch.
Wherein, when needing to calibrate the receiving channel that radio-frequency channel calibrating installation includes, the calibration signal that radio-frequency channel calibrating installation can be sent by calibrated channel, and be N number of signal by calibration signal branch.The calibration signal can be random signal or be PN signal.For example, the calibration signal can be the superposition of 10ms triggering feed-in small signal and service signal, the feed-in time can be for several seconds or longer.Alternatively, the calibration signal is the superposition of 10ms triggering feed-in small signal and big signal, the feed-in time can be several hundred microseconds to several milliseconds.
Specifically, the calibration unit of radio-frequency channel calibrating installation can be as shown in Figure 8 by the process that calibrated channel sends calibration signal.Calibration unit can obtain calibration signal from processing unit (for example, BBU) by base band cpri interface, and be handled it to obtain intermediate frequency (Intermediate Frequency, IF) digital signal.Analog signal is converted by digital analog converter (Digital to Analog Converter, DAC) after the treatment, coupling network is transmitted it to by transmitting line TX later, N number of signal is classified as by coupling network and is transmitted to radio frequency unit.
Step 402: N number of signal is received by N number of receiving channel respectively.
Specifically, the process for N number of signal that the radio frequency unit of radio-frequency channel calibrating installation receives coupling network output by N number of receiving channel respectively can be as shown in Figure 8.Radio frequency unit (such as, RRU calibration signal) is received by duplexer DUP and reception circuit RX, and the signal received is converted into digital signal by analog-digital converter ADC, later by carrying out digital sampling processing after IF, to obtain final received signal.
Step 403: determining that the receiving phase of N number of receiving channel is poor, and the receiving phase difference based on N number of receiving channel calibrates corresponding receiving channel.
After radio-frequency channel calibrating installation receives the calibration signal of calibrated channel transmission by N number of receiving channel respectively, the signal that radio-frequency channel calibrating installation can be received according to the calibration signal and N number of receiving channel of transmission, determines that the receiving phase of N number of receiving channel is poor.Later, corresponding receiving channel can be calibrated according to the receiving phase difference of N number of receiving channel.
Specifically, radio-frequency channel calibrating installation determines that the process of the receiving phase difference of N number of receiving channel can be gone to execute by calibration unit, it can also go to execute by the independent processing unit of radio-frequency channel calibrating installation, when determining the receiving phase difference of N number of receiving channel by calibration unit, calibration unit can send it to processing unit after determination.Finally, corresponding receiving channel is calibrated based on the receiving phase difference of N number of receiving channel by processing unit.For example, calibrating corresponding receiving channel based on the receiving phase difference of N number of receiving channel by BBU as shown in figure 8, processing unit can be BBU.
Further, before radio-frequency channel calibrating installation carries out radio-frequency channel calibration, radio-frequency channel calibrating installation can also be according to the carrier frequency point information of receiving channel, configure the frequency point information of calibrated channel, to improve the reception power for receiving calibration signal by receiving channel, and then improve the loop accuracy of radio-frequency channel calibration.
Radio-frequency channel calibration method provided in an embodiment of the present invention, the calibration signal that radio-frequency channel calibrating installation is sent by calibrated channel, and by the calibration signal branch be N number of signal, N number of signal is received respectively by N number of receiving channel, determine that the receiving phase of N number of receiving channel is poor, and the receiving phase difference based on N number of receiving channel calibrates corresponding receiving channel, when to carry out radio-frequency channel calibration by the calibrated channel provided, the phase difference that can not only introduce to radio frequency unit itself is calibrated, the phase difference that can also be introduced to feeder line is calibrated, to improve the loop accuracy of radio frequency unit receiving channel calibration.
The embodiment of the present invention provides a kind of equipment, the structural schematic diagram of the equipment is as shown in Figure 2, the equipment includes radio frequency unit 101, calibration unit 102 and processing unit 103, radio frequency unit 101 and calibration unit 102 are connect with processing unit 103 respectively, calibration unit 102 includes coupling network 1021, and radio frequency unit 101 is connect by feeder line with coupling network 1021.Wherein, radio frequency unit 101, calibration unit 102 and processing unit 103 are for supporting the equipment to execute above-mentioned Fig. 5 and/or radio-frequency channel calibration method shown in Fig. 7.
Equipment provided in an embodiment of the present invention, when the radio-frequency channel for including to the equipment is calibrated, the calibrated channel that can be provided by calibration unit carries out radio-frequency channel calibration, to which the phase difference that can not only introduce to radio frequency unit itself is calibrated, the phase difference that can also be introduced to feeder line is calibrated, to improve the loop accuracy of the radio-frequency channel calibration of radio frequency unit.
Finally, it should be noted that described above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and any change or replacement within the technical scope of the present application should all be covered within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.
Claims (11)
- A kind of radio-frequency channel calibrating installation, it is characterized in that, described device includes radio frequency unit, calibration unit and processing unit, the radio frequency unit and the calibration unit are connect with the processing unit respectively, the calibration unit includes coupling network, and the radio frequency unit is connect by feeder line with the coupling network；Wherein,The radio frequency unit includes M transmission channel, and for sending calibration signal by the M transmission channel, the M is the positive integer more than or equal to 2；The coupling network, the calibration signal for sending the M transmission channel are coupled as a signal；The calibration unit further includes calibrated channel, for receiving a signal of the coupling network output by the calibrated channel；The processing unit, the transmitter phase for determining the M transmission channel is poor, and calibrates corresponding transmission channel based on the transmitter phase difference of the M transmission channel.
- The apparatus according to claim 1, which is characterized in that the calibration unit further includes calibration process module, and the calibration process module is used to provide the described calibrated channel.
- The apparatus of claim 2, which is characterized in that the calibration process module includes baseband processor, filter and power amplifier.
- A kind of radio-frequency channel calibrating installation, it is characterized in that, described device includes radio frequency unit, calibration unit and processing unit, the radio frequency unit and the calibration unit are connect with the processing unit respectively, the calibration unit includes coupling network, and the radio frequency unit is connect by feeder line with the coupling network；Wherein,The calibration unit further includes calibrated channel, for sending calibration signal by the calibrated channel；The coupling network, for being N number of signal by the calibration signal branch, the N is the positive integer more than or equal to 2；The radio frequency unit includes N number of receiving channel, for receiving N number of signal respectively by N number of receiving channel；The processing unit, the receiving phase for determining N number of receiving channel is poor, and calibrates corresponding receiving channel based on the receiving phase difference of N number of receiving channel.
- Device according to claim 4, which is characterized in that the calibration unit further includes calibration process module, and the calibration process module is used to provide the described calibrated channel.
- Device according to claim 5, which is characterized in that the calibration process module includes baseband processor, filter and power amplifier.
- A kind of radio-frequency channel calibration method, which is characterized in that be applied to radio-frequency channel calibrating installation, which comprisesCalibration signal is sent by M transmission channel；The calibration signal that the M transmission channel is sent is coupled as a signal, and one signal is received by calibrated channel；It determines that the transmitter phase of the M transmission channel is poor, and corresponding transmission channel is calibrated based on the transmitter phase difference of the M transmission channel.
- The method according to the description of claim 7 is characterized in that it is described one signal is received by calibrated channel before, the method also includes:According to the carrier frequency point information of the M transmission channel, the frequency point information of the calibrated channel is configured.
- A kind of radio-frequency channel calibration method, which is characterized in that be applied to radio-frequency channel calibrating installation, which comprisesThe calibration signal sent by calibrated channel, and be N number of signal by the calibration signal branch；N number of signal is received respectively by N number of receiving channel, and the N is the positive integer more than or equal to 2；It determines that the receiving phase of N number of receiving channel is poor, and corresponding receiving channel is calibrated based on the receiving phase difference of N number of receiving channel.
- According to the method described in claim 9, it is characterized in that, it is described N number of signal is received by N number of receiving channel respectively before, the method also includes:According to the carrier frequency point information of N number of receiving channel, the frequency point information of the calibrated channel is configured.
- A kind of equipment, it is characterized in that, the equipment includes radio frequency unit, calibration unit and processor, the radio frequency unit and the calibration unit are connect with the processing unit respectively, the calibration unit includes coupling network, the radio frequency unit is connect by feeder line with the coupling network, the radio frequency unit, the calibration unit and the processor are for supporting the equipment to execute radio-frequency channel calibration method described in the claims 7 or 8, and/or for supporting the equipment to execute radio-frequency channel calibration method described in the claims 9 or 10.
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| TWI779779B (en) * | 2021-08-18 | 2022-10-01 | 瑞昱半導體股份有限公司 | Transceiver and transceiver calibration method |
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| US9130271B2 (en) * | 2012-02-24 | 2015-09-08 | Futurewei Technologies, Inc. | Apparatus and method for an active antenna system with near-field radio frequency probes |
| CN103828270B (en) * | 2013-06-27 | 2015-11-25 | 华为技术有限公司 | Based on the channel calibration method of antenna-feedback system, device and base station |
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- 2017-03-27 WO PCT/CN2017/078328 patent/WO2018176201A1/en active Application Filing
- 2017-03-27 CN CN201780062557.XA patent/CN109845145A/en active Pending
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| EP1705807A1 (en) * | 2003-12-31 | 2006-09-27 | ZTE Corporation | Adjust equipment and method for array antenna transmitting link |
| CN1815914A (en) * | 2005-02-03 | 2006-08-09 | 芯通科技（成都）有限公司 | Calibrating method for intelligent antenna array and radio frequency receiving-transmitting machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117200906A (en) * | 2023-11-07 | 2023-12-08 | 成都嘉晨科技有限公司 | Radio frequency channel calibration method based on deep learning |
| CN117200906B (en) * | 2023-11-07 | 2024-01-23 | 成都嘉晨科技有限公司 | Radio frequency channel calibration method based on deep learning |
Also Published As
| Publication number | Publication date |
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| WO2018176201A1 (en) | 2018-10-04 |
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