WO2018040160A1 - 射频传输线的失配补偿方法及失配补偿装置 - Google Patents

射频传输线的失配补偿方法及失配补偿装置 Download PDF

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Publication number
WO2018040160A1
WO2018040160A1 PCT/CN2016/100277 CN2016100277W WO2018040160A1 WO 2018040160 A1 WO2018040160 A1 WO 2018040160A1 CN 2016100277 W CN2016100277 W CN 2016100277W WO 2018040160 A1 WO2018040160 A1 WO 2018040160A1
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Prior art keywords
transmission line
radio frequency
open
frequency transmission
mismatch
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PCT/CN2016/100277
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English (en)
French (fr)
Inventor
信哲鑫
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/0002—Apparatus or processes for manufacturing printed circuits for manufacturing artworks for printed circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/28—Impedance matching networks
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/07—Electric details
    • H05K2201/0776—Resistance and impedance

Definitions

  • the present invention relates to the field of radio frequency technology, and in particular, to a mismatch compensation method for an RF transmission line and a mismatch compensation device for an RF transmission line.
  • the value of the matching component is large, and the discrete distribution and parasitic parameters cause the transmission line mismatch to be more serious. And adding matching components also makes the space occupied on the PCB larger. If the position of the matching component on the PCB is farther away from the mismatch of the transmission line, the effect is less obvious.
  • PCB engineers generally solve the problem of transmission line mismatch by circumventing methods, which will result in poor RF indicators of products (such as mobile phones), which affect the quality of products.
  • the invention is based on at least one of the above technical problems, and proposes a new mismatch compensation scheme for the radio frequency transmission line, which can compensate the radio frequency transmission line in its work by adding a transmission line.
  • the impedance of the mismatch in the frequency band effectively solves the mismatch problem of the RF transmission line.
  • a method for compensating for mismatching of a radio frequency transmission line comprising: extracting a scattering parameter of an RF transmission line in a working frequency band thereof; and calculating the radio frequency transmission line to be compensated according to the scattering parameter An impedance value; determining, based on the impedance value to be compensated, a parameter of an open transmission line to be added on the radio frequency transmission line to perform mismatch compensation on the radio frequency transmission line based on the added open transmission line.
  • the scattering parameter of the RF transmission line in the working frequency band is extracted, and the impedance value to be compensated by the RF transmission line is calculated according to the scattering parameter, and then the open transmission line to be added on the RF transmission line is determined based on the impedance value to be compensated.
  • the parameter makes it possible to compensate the mismatch impedance of the RF transmission line in its working frequency band by adding a transmission line, effectively solving the mismatch problem of the RF transmission line, and avoiding the problem of solving the mismatch of the RF transmission line by adding matching components.
  • the mismatch of the RF transmission line is more serious and the effect is not obvious.
  • the impedance matching of the RF transmission line is optimized, and the RF index of the RF transmission line is ensured to meet the specifications.
  • the parameters of the open transmission line include length and width, and the open transmission line can be connected in parallel to the rear end of the RF transmission line.
  • the step of extracting the scattering parameter of the radio frequency transmission line in the working frequency band thereof comprises: extracting, by using a software simulation manner, the radio frequency transmission line in the circuit diagram where the radio frequency transmission line is located Scattering parameters on the frequency band; the scattering parameters of the RF transmission line in the working frequency band are proposed by the vector network analyzer in the circuit board where the RF transmission line is located.
  • the scattering parameter of the RF transmission line in its working frequency band can be directly extracted in the circuit diagram (such as the PCB circuit diagram) where the RF transmission line is located; on the other hand, the circuit board (such as the PCB) where the RF transmission line is located can also be directly used.
  • the scattering parameters of the RF transmission line in its operating frequency band are proposed in the circuit board to ensure more accurate scattering parameters are extracted.
  • the method further includes: extracting scattering parameters of the radio frequency transmission line and the open transmission line on an operating frequency band of the radio frequency transmission line And verifying, according to the scattering parameters of the radio frequency transmission line and the open transmission line on the working frequency band of the radio frequency transmission line, whether the impedance values of the radio frequency transmission line and the open transmission line meet the requirements.
  • the impedance values of the radio frequency transmission line and the open transmission line do not meet the requirements, adjusting parameters of the open transmission line, and verifying the radio frequency transmission line and the open circuit again Whether the impedance value of the transmission line meets the requirements until the impedance values of the RF transmission line and the open transmission line meet the requirements.
  • the parameters of the open transmission line are adjusted, and it is verified whether the impedance values of the RF transmission line and the open transmission line meet the requirements until the RF transmission line and the open circuit
  • the impedance value of the transmission line meets the requirements, and the added open transmission line can effectively solve the problem of impedance mismatch of the RF transmission line.
  • the step of verifying whether the impedance values of the radio frequency transmission line and the open transmission line meet the requirements specifically: working according to the radio frequency transmission line and the open transmission line in the radio frequency transmission line a scattering parameter on the frequency band, determining impedance values of the RF transmission line and the open transmission line; determining the RF transmission line and the open circuit when an impedance value of the RF transmission line and the Open transmission line is within a predetermined impedance value range The impedance value of the transmission line meets the requirements.
  • the impedance value is a resistance value and a reactance value.
  • a mismatch compensation apparatus for an RF transmission line comprising: an extraction unit configured to extract a scattering parameter of the RF transmission line on a working frequency band thereof; and a calculation unit configured to be configured according to the scattering parameter Calculating an impedance value that the radio frequency transmission line needs to compensate; and the processing unit is configured to determine, according to the impedance value to be compensated, a parameter of an open transmission line to be added on the radio frequency transmission line, to be based on the added open transmission line pair
  • the RF transmission line is described for mismatch compensation.
  • the scattering parameter of the RF transmission line in its working frequency band is extracted, and the impedance value that the RF transmission line needs to compensate is calculated according to the scattering parameter, and then based on the compensation required.
  • the impedance value determines the parameters of the open transmission line that need to be added on the RF transmission line, so that the impedance of the RF transmission line mismatched in its working frequency band can be compensated by adding the transmission line, thereby effectively solving the mismatch problem of the RF transmission line and avoiding adding Matching components to solve the problem of RF transmission line mismatch may cause serious mismatch of RF transmission line and the effect is not obvious.
  • the impedance matching of the RF transmission line is optimized to ensure that the RF index of the RF transmission line conforms to the specification.
  • the parameters of the open transmission line include length and width, and the open transmission line can be connected in parallel to the rear end of the RF transmission line.
  • the extracting unit is specifically configured to: in a circuit diagram in which the radio frequency transmission line is located, extract a scattering parameter of the radio frequency transmission line in a working frequency band thereof by using a software simulation manner; A scattering parameter of the RF transmission line in its operating frequency band is proposed in a circuit board in which the RF transmission line is located.
  • the scattering parameter of the RF transmission line in its working frequency band can be directly extracted in the circuit diagram (such as the PCB circuit diagram) where the RF transmission line is located; on the other hand, the circuit board (such as the PCB) where the RF transmission line is located can also be directly used.
  • the scattering parameters of the RF transmission line in its operating frequency band are proposed in the circuit board to ensure more accurate scattering parameters are extracted.
  • the extracting unit is further configured to extract the work of the radio frequency transmission line and the open transmission line on the radio frequency transmission line after adding the open transmission line on the radio frequency transmission line.
  • a scattering parameter on the frequency band the mismatch compensation device further comprising: a verification unit configured to verify the RF transmission line and the location according to a scattering parameter of the RF transmission line and the open transmission line on a working frequency band of the RF transmission line Whether the impedance value of the open transmission line meets the requirements.
  • the verification unit is further configured to: if it is determined that the impedance values of the radio frequency transmission line and the open transmission line do not meet the requirements, adjust parameters of the open transmission line, and verify the Whether the impedance values of the RF transmission line and the open transmission line are The requirements are met until the impedance values of the RF transmission line and the open transmission line meet the requirements.
  • the parameters of the open transmission line are adjusted, and it is verified whether the impedance values of the RF transmission line and the open transmission line meet the requirements until the RF transmission line and the open circuit
  • the impedance value of the transmission line meets the requirements, and the added open transmission line can effectively solve the problem of impedance mismatch of the RF transmission line.
  • the verification unit is configured to: determine the radio frequency transmission line and the according to a scattering parameter of the radio frequency transmission line and the open transmission line on a working frequency band of the radio frequency transmission line;
  • the impedance value of the open transmission line determines that the impedance values of the radio frequency transmission line and the open transmission line meet the requirements when the impedance values of the radio frequency transmission line and the open transmission line are within a predetermined impedance value range.
  • the impedance value is a resistance value and a reactance value.
  • the impedance of the RF transmission line mismatched in its working frequency band can be compensated by adding a transmission line, thereby effectively solving the mismatch problem of the RF transmission line.
  • FIG. 1 is a flow chart showing a method of compensating for a mismatch of a radio frequency transmission line according to a first embodiment of the present invention
  • FIG. 2 is a flow chart showing a method of compensating for a mismatch of a radio frequency transmission line according to a second embodiment of the present invention
  • FIG. 3 is a schematic diagram showing simulation results of mismatch impedance of a radio frequency transmission line according to an embodiment of the present invention
  • FIG. 4 is a Schematic diagram showing a mismatch impedance of a radio frequency transmission line in accordance with an embodiment of the present invention
  • FIG. 5 is a schematic diagram showing simulation results of a mismatch impedance of an RF transmission line after adding an open stub according to an embodiment of the present invention
  • FIG. 6 shows a schematic diagram of adding an open stub in a PCB circuit diagram in accordance with an embodiment of the present invention
  • FIG. 7 is a Schematic diagram showing a radio frequency transmission line after adding an open stub according to an embodiment of the present invention.
  • Figure 8 is a schematic block diagram showing a mismatch compensation device for a radio frequency transmission line according to a first embodiment of the present invention
  • FIG. 9 is a schematic block diagram of a mismatch compensation device for a radio frequency transmission line according to a second embodiment of the present invention.
  • Figure 10 is a schematic block diagram showing a mismatch compensation device for a radio frequency transmission line in accordance with a third embodiment of the present invention.
  • FIG. 1 is a flow chart showing a method of compensating for a mismatch of a radio frequency transmission line according to a first embodiment of the present invention.
  • a method for compensating for a mismatch of a radio frequency transmission line includes:
  • Step S10 extracting scattering parameters of the radio frequency transmission line in its working frequency band.
  • step S10 specifically includes the following implementation manners:
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the scattering parameters of the RF transmission line in its working frequency band are extracted in a circuit diagram in which the RF transmission line is located by software simulation. That is, the scattering parameter of the RF transmission line in its working frequency band can be directly extracted in the circuit diagram (such as the PCB circuit diagram) where the RF transmission line is located.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a scattering parameter of the RF transmission line in its operating frequency band is proposed by a vector network analyzer in a circuit board in which the RF transmission line is located. That is, the board directly on the RF transmission line
  • the scattering parameters of the RF transmission line in its operating frequency band (such as PCB board) are proposed to ensure more accurate scattering parameters are extracted.
  • Step S12 calculating an impedance value that the radio frequency transmission line needs to compensate according to the scattering parameter.
  • the impedance value is a resistance value and a reactance value.
  • Step S14 Determine, according to the impedance value to be compensated, a parameter of an open transmission line to be added on the radio frequency transmission line, to perform mismatch compensation on the radio frequency transmission line based on the added open transmission line.
  • the parameters of the open transmission line include length and width, and the open transmission line can be connected in parallel to the rear end of the RF transmission line.
  • the transmission line can be compensated for the mismatch impedance of the RF transmission line in its working frequency band, which effectively solves the mismatch problem of the RF transmission line, and avoids the problem of RF transmission line mismatch by adding matching components to solve the problem of RF transmission line mismatch.
  • the mismatch is more serious and the effect is not obvious.
  • the impedance matching of the RF transmission line is optimized, and the RF index of the RF transmission line is ensured to meet the specifications.
  • the adding the open transmission line on the radio frequency transmission line further comprising: extracting a scattering parameter of the radio frequency transmission line and the open transmission line on a working frequency band of the radio frequency transmission line; according to the radio frequency transmission line and the Determining the scattering parameters of the open transmission line on the operating frequency band of the radio frequency transmission line, and verifying whether the impedance values of the radio frequency transmission line and the open transmission line meet the requirements.
  • the impedance values of the radio frequency transmission line and the open transmission line do not meet the requirements, adjust parameters of the open transmission line, and verify again whether the impedance values of the radio frequency transmission line and the open transmission line meet the requirements, until The radio frequency transmission line and the open circuit transmission The impedance of the line meets the requirements.
  • the parameters of the open transmission line are adjusted, and it is verified whether the impedance values of the RF transmission line and the open transmission line meet the requirements until the RF transmission line and the open circuit
  • the impedance value of the transmission line meets the requirements, and the added open transmission line can effectively solve the problem of impedance mismatch of the RF transmission line.
  • the step of verifying whether the impedance values of the radio frequency transmission line and the open transmission line meet the requirements includes: determining, according to the scattering parameters of the radio frequency transmission line and the open transmission line on the working frequency band of the radio frequency transmission line, Determining impedance values of the radio frequency transmission line and the open transmission line; determining that the impedance values of the radio frequency transmission line and the open transmission line meet the requirements when the impedance values of the radio frequency transmission line and the open transmission line are within a predetermined impedance value range.
  • a method for compensating for a mismatch of a radio frequency transmission line includes:
  • step S20 the S parameter (ie, the scattering parameter) of the radio frequency transmission line is extracted.
  • the PCB circuit diagram of the transmission line that cannot be avoided and affects the serious RF frequency band is extracted for the back end of the frequency band of the mismatched transmission line, and then extracted by software simulation.
  • S parameter If there is already a ready-made board, the S-parameters can be extracted by actually measuring the PCB on the board by a vector network analyzer. Among them, the S parameter can be converted into a resistance value and a reactance value.
  • Step S22 calculating an impedance value that the radio frequency transmission line needs to compensate by using the extracted S parameter.
  • Step S24 determining parameters of the transmission line that need to be added at the back end of the radio frequency transmission line based on the calculated impedance value that needs to be compensated. Then add a small transmission line at the back end of the RF transmission line to compensate.
  • the parameters of the transmission line include length and width.
  • Step S26 After adding the transmission line at the back end of the RF transmission line, simulate the PCB circuit diagram of the added transmission line.
  • step S28 it is determined whether the impedance of the radio frequency transmission line and the added transmission line meets the requirements after the transmission line is added. If yes, step S32 is performed; otherwise, step S30 is performed.
  • Step S30 adjusting the compensation value, that is, adjusting the parameters of the added transmission line, and then returning Go back to step S26.
  • step S32 the compensation mechanism is added to the PCB circuit diagram for use in the next boarding. Specifically, if there is no ready-made PCB circuit board, only the PCB circuit diagram, the compensation mechanism can be added when the first board is cast; if there is already a ready-made board, the compensation mechanism is added at the next board.
  • the parameters of a certain microstrip line (one type of transmission line) of the RF transceiver output port are: dielectric parameter 3.3, and the width of the mismatched segment transmission line (TL1) output from the RF transceiver is 2.9.
  • the frequency band of the transmission line is the LTE B7 frequency band (2.5 GHz to 2.57 GHz)
  • the mismatch impedance is as follows:
  • an open branch can be added at the back end of the mismatch transmission line to solve the mismatch problem of the transmission line, as shown in FIG. 5:
  • a schematic structure in the PCB circuit diagram is shown in FIG. 6, wherein the transmission line 602 is a mismatched transmission line, the transmission line 606 is an added open transmission line, and the transmission line 604 is a rear 50 ⁇ line.
  • Fig. 8 is a schematic block diagram showing a mismatch compensation device for a radio frequency transmission line according to a first embodiment of the present invention.
  • the mismatch compensation apparatus 800 of the radio frequency transmission line includes an extracting unit 802, a calculating unit 804, and a processing unit 806.
  • the extracting unit 802 is configured to extract the scattering parameter of the radio frequency transmission line on the working frequency band thereof; the calculating unit 804 is configured to calculate the impedance value that the radio frequency transmission line needs to compensate according to the scattering parameter; the processing unit 806 is configured to compensate according to the requirement
  • the impedance value determines a parameter of an open transmission line to be added on the radio frequency transmission line to perform mismatch compensation on the radio frequency transmission line based on the added open transmission line.
  • the scattering parameter of the RF transmission line in the working frequency band is extracted, and the impedance value to be compensated by the RF transmission line is calculated according to the scattering parameter, and then the open transmission line to be added on the RF transmission line is determined based on the impedance value to be compensated.
  • the parameter makes it possible to compensate the mismatch impedance of the RF transmission line in its working frequency band by adding a transmission line, effectively solving the mismatch problem of the RF transmission line, and avoiding the problem of solving the mismatch of the RF transmission line by adding matching components.
  • the mismatch of the RF transmission line is more serious and the effect is not obvious.
  • the impedance matching of the RF transmission line is optimized, and the RF index of the RF transmission line is ensured to meet the specifications.
  • the parameters of the open transmission line include length and width, and the open transmission line can be connected in parallel to the rear end of the RF transmission line.
  • the extracting unit 802 is specifically configured to: in a circuit diagram in which the radio frequency transmission line is located, extract a scattering parameter of the radio frequency transmission line in a working frequency band by using a software simulation; The instrument provides a scattering parameter of the RF transmission line in its operating frequency band in a circuit board in which the RF transmission line is located.
  • the scattering parameter of the RF transmission line in its working frequency band can be directly extracted in the circuit diagram (such as the PCB circuit diagram) where the RF transmission line is located; on the other hand, the circuit board (such as the PCB) where the RF transmission line is located can also be directly used.
  • the scattering parameters of the RF transmission line in its operating frequency band are proposed in the circuit board to ensure more accurate scattering parameters are extracted.
  • the mismatch compensation apparatus 900 further includes: based on the extraction unit 802, the calculation unit 804, and the processing unit 806 shown in FIG. Verification unit 902.
  • the extracting unit 802 is further configured to: after adding the open transmission line on the radio frequency transmission line, extracting the radio frequency transmission line and the open transmission line on the radio frequency transmission line a scattering parameter on the operating frequency band; the verification unit 902 is configured to verify whether the impedance values of the RF transmission line and the open transmission line are consistent according to the scattering parameters of the RF transmission line and the Open transmission line on the operating frequency band of the RF transmission line Claim.
  • the verification unit 902 is further configured to: if it is determined that the impedance values of the radio frequency transmission line and the open transmission line do not meet the requirements, adjust parameters of the open transmission line, and verify again Whether the impedance values of the radio frequency transmission line and the open transmission line meet the requirements until the impedance values of the radio frequency transmission line and the open transmission line meet the requirements.
  • the parameters of the open transmission line are adjusted, and it is verified whether the impedance values of the RF transmission line and the open transmission line meet the requirements until the RF transmission line and the open circuit
  • the impedance value of the transmission line meets the requirements, and the added open transmission line can effectively solve the problem of impedance mismatch of the RF transmission line.
  • the verification unit 902 is specifically configured to: determine the radio frequency transmission line and the location according to a scattering parameter of the radio frequency transmission line and the open transmission line on a working frequency band of the radio frequency transmission line.
  • the impedance value of the open transmission line determines that the impedance values of the radio frequency transmission line and the open transmission line meet the requirements when the impedance values of the radio frequency transmission line and the open transmission line are within a predetermined impedance value range.
  • the impedance value is a resistance value and a reactance value.
  • Common problems that can be optimized by the technical solution of the present invention include that the common end matching of the duplexer cannot adjust the convergence, that is, the transmitted ACLR is not flat or not up to standard, and the sensitivity index is not flat or not up to standard.
  • Figure 10 is a schematic block diagram showing a mismatch compensation device for a radio frequency transmission line in accordance with a third embodiment of the present invention.
  • a mismatch compensation device for a radio frequency transmission line includes a processor 1, an input device 2, and a memory 3.
  • the processor 1, the input device 2, and the memory 3 may be connected by a bus 4 or other means, as exemplified by the connection through the bus 4 in FIG.
  • the memory 3 is used to store a set of program codes, and the processor 1 calls the program code stored in the memory 3 for performing the following operations:
  • the parameter of the open transmission line is to compensate for the mismatch compensation of the radio frequency transmission line based on the added open transmission line.
  • the processor 1 calls the program code stored in the memory 3, and the operation of extracting the scattering parameter of the radio frequency transmission line in the working frequency band through the input device 2 is specifically as follows:
  • the processor 1 calls the program code stored in the memory 3, and is also used to perform the following operations:
  • the processor 1 calls the program code stored in the memory 3, and is also used to perform the following operations:
  • the impedance values of the RF transmission line and the open transmission line do not meet the requirements, adjusting parameters of the open transmission line, and verifying again whether the impedance values of the RF transmission line and the Open transmission line meet requirements, until the RF The impedance values of the transmission line and the open transmission line meet the requirements.
  • the processor 1 calls the program generation stored in the memory 3. And determining, by the code, whether the impedance values of the radio frequency transmission line and the open transmission line meet the required operation, specifically: determining, according to the scattering parameter of the radio frequency transmission line and the open transmission line on a working frequency band of the radio frequency transmission line, And an impedance value of the RF transmission line and the open transmission line; determining that the impedance values of the RF transmission line and the Open transmission line meet the requirements when the impedance values of the RF transmission line and the Open transmission line are within a predetermined impedance value range.
  • the units in the mismatch compensation device of the radio frequency transmission line according to the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • OTPROM One-Time Programmable Read-Only Memory
  • EEPROM Electronically-Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • the present invention proposes a new mismatch compensation scheme for an RF transmission line, which can compensate the impedance of the RF transmission line in its working frequency band by adding a transmission line. Solved the mismatch problem of RF transmission line.

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Abstract

本发明提供了一种射频传输线的失配补偿方法及失配补偿装置，其中，射频传输线的失配补偿方法包括：提取射频传输线在其工作频段上的散射参数；根据所述散射参数计算所述射频传输线需要补偿的阻抗值；基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。本发明的技术方案可以通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题。

Description

射频传输线的失配补偿方法及失配补偿装置
本申请要求于2016年8月31日提交中国专利局，申请号为201610789993.4、发明名称为“射频传输线的失配补偿方法及失配补偿装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及射频技术领域，具体而言，涉及一种射频传输线的失配补偿方法和一种射频传输线的失配补偿装置。
背景技术
在射频PCB(Printed Circuit Board，印制电路板)的布线过程中，经常遇到由于空间或者其它布线的限制导致某一段较短的传输线不能处于理想状态，进而会造成该传输线的阻抗失配。比如：由于射频收发器的射频端口输出端和微带线到带状线过渡的通孔、错孔、参考地不完整等会导致传输线存在失配的问题。
通过增加匹配元件(如电容、电感、电阻等)来解决传输线失配的问题时，由于匹配元件的值较大，以及离散分布和寄生参数等原因，反而会导致传输线失配更加严重。并且增加匹配元件也使得在PCB上占用的空间较大，若匹配元件在PCB上的位置与传输线失配的地方越远，效果越不明显。
目前，PCB工程师一般是通过规避的方式来解决传输线失配的问题，这样会导致生产出来的产品(如手机等)的射频指标较差，影响了产品的品质。
因此，如何能够优化射频传输线的匹配，有效避免射频传输线失配成为亟待解决的技术问题。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的射频传输线的失配补偿方案，可以通过添加传输线的方式来补偿射频传输线在其工作 频段上失配的阻抗，有效解决了射频传输线的失配问题。
有鉴于此，根据本发明的第一方面，提出了一种射频传输线的失配补偿方法，包括：提取射频传输线在其工作频段上的散射参数；根据所述散射参数计算所述射频传输线需要补偿的阻抗值；基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
在该技术方案中，通过提取射频传输线在其工作频段上的散射参数，并根据散射参数计算射频传输线需要补偿的阻抗值，进而基于需要补偿的阻抗值确定需要在射频传输线上添加的开路传输线的参数，使得能够通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题，避免了通过添加匹配元件来解决射频传输线失配的问题而可能出现射频传输线的失配更加严重、效果不明显的问题，优化了射频传输线的阻抗匹配，确保了射频传输线的射频指标符合规范。
其中，开路传输线的参数包括长度和宽度，开路传输线可以通过并联的方式连接在射频传输线的后端。
在上述技术方案中，优选地，所述提取射频传输线在其工作频段上的散射参数的步骤，具体包括：通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数；通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。
在该技术方案中，一方面可以直接在射频传输线所在的电路图(如PCB电路图)中提取射频传输线在其工作频段上的散射参数；另一方面也可以直接在射频传输线所在的电路板(如PCB电路板)中提出射频传输线在其工作频段上的散射参数，以保证提取到更加准确的散射参数。
在上述任一技术方案中，优选地，当在所述射频传输线上添加所述开路传输线之后，还包括：提取所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数；根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
在该技术方案中，通过在射频传输线上添加开路传输线之后，提取射频传输线和开路传输线在射频传输线的工作频段上的散射参数，并基于此验证射频传输线和开路传输线的阻抗值是否符合要求，使得能够对射频传输线的补偿结果进行验证，以确保添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
在上述技术方案中，优选地，还包括：若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否符合要求，直到所述射频传输线和所述开路传输线的阻抗值符合要求为止。
在该技术方案中，通过在确定射频传输线和开路传输线的阻抗值不符合要求时，对开路传输线的参数进行调整，并再次验证射频传输线和开路传输线的阻抗值是否符合要求，直到射频传输线和开路传输线的阻抗值符合要求为止，可以保证添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
在上述任一技术方案中，优选地，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求的步骤，具体包括：根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值；在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
其中，所述的阻抗值即为电阻值和电抗值。
根据本发明的第二方面，还提出了一种射频传输线的失配补偿装置，包括：提取单元，设置为提取射频传输线在其工作频段上的散射参数；计算单元，设置为根据所述散射参数计算所述射频传输线需要补偿的阻抗值；处理单元，设置为基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
在该技术方案中，通过提取射频传输线在其工作频段上的散射参数，并根据散射参数计算射频传输线需要补偿的阻抗值，进而基于需要补偿的 阻抗值确定需要在射频传输线上添加的开路传输线的参数，使得能够通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题，避免了通过添加匹配元件来解决射频传输线失配的问题而可能出现射频传输线的失配更加严重、效果不明显的问题，优化了射频传输线的阻抗匹配，确保了射频传输线的射频指标符合规范。
其中，开路传输线的参数包括长度和宽度，开路传输线可以通过并联的方式连接在射频传输线的后端。
在上述技术方案中，优选地，所述提取单元具体设置为：通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数；通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。
在该技术方案中，一方面可以直接在射频传输线所在的电路图(如PCB电路图)中提取射频传输线在其工作频段上的散射参数；另一方面也可以直接在射频传输线所在的电路板(如PCB电路板)中提出射频传输线在其工作频段上的散射参数，以保证提取到更加准确的散射参数。
在上述任一技术方案中，优选地，所述提取单元还设置为，当在所述射频传输线上添加所述开路传输线之后，提取所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数；所述失配补偿装置还包括：验证单元，设置为根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
在该技术方案中，通过在射频传输线上添加开路传输线之后，提取射频传输线和开路传输线在射频传输线的工作频段上的散射参数，并基于此验证射频传输线和开路传输线的阻抗值是否符合要求，使得能够对射频传输线的补偿结果进行验证，以确保添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
在上述任一技术方案中，优选地，所述验证单元还设置为：若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否 符合要求，直到所述射频传输线和所述开路传输线的阻抗值符合要求为止。
在该技术方案中，通过在确定射频传输线和开路传输线的阻抗值不符合要求时，对开路传输线的参数进行调整，并再次验证射频传输线和开路传输线的阻抗值是否符合要求，直到射频传输线和开路传输线的阻抗值符合要求为止，可以保证添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
在上述任一技术方案中，优选地，所述验证单元具体设置为：根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值，在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
其中，所述的阻抗值即为电阻值和电抗值。
通过以上技术方案，使得能够通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题。
附图说明
图1示出了根据本发明的第一个实施例的射频传输线的失配补偿方法的流程示意图；
图2示出了根据本发明的第二个实施例的射频传输线的失配补偿方法的流程示意图；
图3示出了根据本发明的实施例的射频传输线的失配阻抗的仿真结果示意图；
图4示出了根据本发明的实施例的射频传输线的失配阻抗的施密特圆图示意图；
图5示出了根据本发明的实施例的射频传输线在添加开路枝节之后的失配阻抗的仿真结果示意图；
图6示出了根据本发明的实施例的在PCB电路图中添加开路枝节的示意图；
图7示出了根据本发明的实施例的射频传输线在添加开路枝节之后的施密特圆图示意图；
图8示出了根据本发明的第一个实施例的射频传输线的失配补偿装置的示意框图；
图9示出了根据本发明的第二个实施例的射频传输线的失配补偿装置的示意框图；
图10示出了根据本发明的第三个实施例的射频传输线的失配补偿装置的示意框图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图1示出了根据本发明的第一个实施例的射频传输线的失配补偿方法的流程示意图。
如图1所示，根据本发明的第一个实施例的射频传输线的失配补偿方法，包括：
步骤S10，提取射频传输线在其工作频段上的散射参数。
在本发明的一个实施例中，步骤S10具体包括如下实施方式：
实施方式一：
通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数。即可以直接在射频传输线所在的电路图(如PCB电路图)中提取射频传输线在其工作频段上的散射参数
实施方式二：
通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。即直接在射频传输线所在的电路板 (如PCB电路板)中提出射频传输线在其工作频段上的散射参数，以保证提取到更加准确的散射参数。
步骤S12，根据所述散射参数计算所述射频传输线需要补偿的阻抗值。其中，所述的阻抗值即为电阻值和电抗值。
步骤S14，基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
其中，开路传输线的参数包括长度和宽度，开路传输线可以通过并联的方式连接在射频传输线的后端。
具体地，通过提取射频传输线在其工作频段上的散射参数，并根据散射参数计算射频传输线需要补偿的阻抗值，进而基于需要补偿的阻抗值确定需要在射频传输线上添加的开路传输线的参数，使得能够通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题，避免了通过添加匹配元件来解决射频传输线失配的问题而可能出现射频传输线的失配更加严重、效果不明显的问题，优化了射频传输线的阻抗匹配，确保了射频传输线的射频指标符合规范。
进一步地，当在所述射频传输线上添加所述开路传输线之后，还包括：提取所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数；根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
在该技术方案中，通过在射频传输线上添加开路传输线之后，提取射频传输线和开路传输线在射频传输线的工作频段上的散射参数，并基于此验证射频传输线和开路传输线的阻抗值是否符合要求，使得能够对射频传输线的补偿结果进行验证，以确保添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
进一步地，若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否符合要求，直到所述射频传输线和所述开路传输 线的阻抗值符合要求为止。
在该技术方案中，通过在确定射频传输线和开路传输线的阻抗值不符合要求时，对开路传输线的参数进行调整，并再次验证射频传输线和开路传输线的阻抗值是否符合要求，直到射频传输线和开路传输线的阻抗值符合要求为止，可以保证添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
进一步地，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求的步骤，具体包括：根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值；在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
以下结合图2至图6进一步说明本发明的技术方案。
如图2所示，根据本发明的第二个实施例的射频传输线的失配补偿方法，包括：
步骤S20，提取射频传输线的S参数(即散射参数)。
具体地，若没有现成的PCB电路板，只有PCB电路图，则对于失配传输线的频段后端，将无法避免且影响严重的射频频段的传输线所在的PCB电路图提取出来，然后通过软件仿真的方式提取S参数。若已经有现成的电路板，则可以通过矢量网络分析仪实际测量电路板上的PCB来提取S参数。其中，S参数可以转换为电阻值和电抗值。
步骤S22，通过提取出的S参数计算射频传输线需要补偿的阻抗值。
步骤S24，基于计算出的需要补偿的阻抗值，确定需要在射频传输线的后端添加的传输线的参数。然后在射频传输线的后端添加一小段传输线进行补偿。其中，传输线的参数包括长度和宽度。
步骤S26，在射频传输线的后端添加传输线之后，对添加传输线的PCB电路图进行仿真。
步骤S28，判断在添加传输线之后，射频传输线和添加的传输线的阻抗是否满足要求，若是，则执行步骤S32；否则，执行步骤S30。
步骤S30，调整补偿值，即对添加的传输线的参数进行调整，然后返 回步骤S26。
步骤S32，将补偿机制加入到PCB电路图中，以在下一次投板时使用。具体地，若没有现成的PCB电路板，只有PCB电路图，则在第一次投板时就可以加入补偿机制；若已经有现成的电路板，则在下一次投板时加入补偿机制。
以下以具体的实施例对本发明的技术方案进行说明：
如图3所示，假设射频收发器输出端口的某一段微带线(传输线的一种)的参数为：介电参数3.3，从射频收发器输出的失配小段传输线(TL1)的宽度为2.9mil，长度为100mil，其后端未失配理想传输线(TL5)的50Ω阻抗宽度为6.9mil，该阻抗下长度为1000mil。其中，mil为千分之一英尺，1mil＝0.0254mm。
若该传输线的频段为LTE B7频段(2.5GHz～2.57GHz)，即只需关注2.5GHz～2.57GHz频段内的失配问题，如图4所示，通过simith(施密特)圆图可以看出，其失配阻抗如下：
2.5GHz时，Z＝40.964-j*1.637；
2.57GHz时，Z＝40.629-j*0.603。
基于本发明的技术方案，可以在失配传输线的后端添加开路枝节，以解决传输线的失配问题，具体如图5所示：
通过计算可知，需要在失配传输线的后端添加的开路枝节的尺寸为：长度L＝100mil，宽度W＝4mil。其PCB电路图中的示意结构如图6所示，其中，传输线602为失配的传输线，传输线606为添加的开路传输线，传输线604为后端50Ω线。
在添加开路传输线之后，如图7所示，通过simith(施密特)圆图可以看出，在传输线失配端增加一个开路枝节，L＝100mil，W＝4mil，最后阻抗接近50Ω，即解决了阻抗失配的问题。
可见，本发明的技术方案通过传输线的L型匹配枝节有效补偿了射频传输线的阻抗失配问题。
图8示出了根据本发明的第一个实施例的射频传输线的失配补偿装置的示意框图。
如图8所示，根据本发明的第一个实施例的射频传输线的失配补偿装置800，包括：提取单元802、计算单元804和处理单元806。
其中，提取单元802设置为提取射频传输线在其工作频段上的散射参数；计算单元804设置为根据所述散射参数计算所述射频传输线需要补偿的阻抗值；处理单元806设置为基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
在该技术方案中，通过提取射频传输线在其工作频段上的散射参数，并根据散射参数计算射频传输线需要补偿的阻抗值，进而基于需要补偿的阻抗值确定需要在射频传输线上添加的开路传输线的参数，使得能够通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题，避免了通过添加匹配元件来解决射频传输线失配的问题而可能出现射频传输线的失配更加严重、效果不明显的问题，优化了射频传输线的阻抗匹配，确保了射频传输线的射频指标符合规范。
其中，开路传输线的参数包括长度和宽度，开路传输线可以通过并联的方式连接在射频传输线的后端。
在上述技术方案中，优选地，所述提取单元802具体设置为：通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数；通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。
在该技术方案中，一方面可以直接在射频传输线所在的电路图(如PCB电路图)中提取射频传输线在其工作频段上的散射参数；另一方面也可以直接在射频传输线所在的电路板(如PCB电路板)中提出射频传输线在其工作频段上的散射参数，以保证提取到更加准确的散射参数。
进一步地，如图9所示，根据本发明的第二个实施例的失配补偿装置900在包括图8中所示的提取单元802、计算单元804和处理单元806的基础上，还包括：验证单元902。
其中，提取单元802还设置为，当在所述射频传输线上添加所述开路传输线之后，提取所述射频传输线和所述开路传输线在所述射频传输线的 工作频段上的散射参数；验证单元902设置为根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
在该技术方案中，通过在射频传输线上添加开路传输线之后，提取射频传输线和开路传输线在射频传输线的工作频段上的散射参数，并基于此验证射频传输线和开路传输线的阻抗值是否符合要求，使得能够对射频传输线的补偿结果进行验证，以确保添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
在上述任一技术方案中，优选地，所述验证单元902还设置为：若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否符合要求，直到所述射频传输线和所述开路传输线的阻抗值符合要求为止。
在该技术方案中，通过在确定射频传输线和开路传输线的阻抗值不符合要求时，对开路传输线的参数进行调整，并再次验证射频传输线和开路传输线的阻抗值是否符合要求，直到射频传输线和开路传输线的阻抗值符合要求为止，可以保证添加的开路传输线能够有效解决射频传输线的阻抗失配的问题。
在上述任一技术方案中，优选地，所述验证单元902具体设置为：根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值，在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
其中，所述的阻抗值即为电阻值和电抗值。
本发明的技术方案可以优化的常见问题包括：双工器的公共端匹配无法调节收敛，即发射的ACLR不平坦或不达标，灵敏度指标不平坦或不达标的问题。
图10示出了根据本发明的第三个实施例的射频传输线的失配补偿装置的示意框图。
如图10所示，根据本发明的第三个实施例的射频传输线的失配补偿装置，包括：处理器1、输入装置2和存储器3。在本发明的一些实施例中，处理器1、输入装置2和存储器3可以通过总线4或其他方式连接，图10中以通过总线4连接为例。
其中，存储器3用于存储一组程序代码，处理器1调用存储器3中存储的程序代码，用于执行以下操作：
通过输入装置2提取射频传输线在其工作频段上的散射参数；根据所述散射参数计算所述射频传输线需要补偿的阻抗值；基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
作为一种可选的实施方式，处理器1调用存储器3中存储的程序代码，通过输入装置2提取射频传输线在其工作频段上的散射参数的操作具体为：
通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数；通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。
作为一种可选的实施方式，处理器1调用存储器3中存储的程序代码，还用于执行以下操作：
当在所述射频传输线上添加所述开路传输线之后，提取所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数；根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
作为一种可选的实施方式，处理器1调用存储器3中存储的程序代码，还用于执行以下操作：
若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否符合要求，直到所述射频传输线和所述开路传输线的阻抗值符合要求为止。
作为一种可选的实施方式，处理器1调用存储器3中存储的程序代 码，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求的操作，具体包括：根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值；在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
本发明实施例的方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本发明实施例的射频传输线的失配补偿装置中的单元可以根据实际需要进行合并、划分和删减。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质包括只读存储器(Read-Only Memory，ROM)、随机存储器(Random Access Memory，RAM)、可编程只读存储器(Programmable Read-only Memory，PROM)、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、一次可编程只读存储器(One-time Programmable Read-Only Memory，OTPROM)、电子抹除式可复写只读存储器(Electrically-Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储器、磁盘存储器、磁带存储器、或者能够用于携带或存储数据的计算机可读的任何其他介质。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的射频传输线的失配补偿方案，可以通过添加传输线的方式来补偿射频传输线在其工作频段上失配的阻抗，有效解决了射频传输线的失配问题。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种射频传输线的失配补偿方法，其特征在于，包括：
    提取射频传输线在其工作频段上的散射参数；
    根据所述散射参数计算所述射频传输线需要补偿的阻抗值；
    基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
  2. 根据权利要求1所述的射频传输线的失配补偿方法，其特征在于，所述提取射频传输线在其工作频段上的散射参数的步骤，具体包括：
    通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数；
    通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。
  3. 根据权利要求1所述的射频传输线的失配补偿方法，其特征在于，当在所述射频传输线上添加所述开路传输线之后，还包括：
    提取所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数；
    根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
  4. 根据权利要求3所述的射频传输线的失配补偿方法，其特征在于，还包括：
    若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否符合要求，直到所述射频传输线和所述开路传输线的阻抗值符合要求为止。
  5. 根据权利要求3或4所述的射频传输线的失配补偿方法，其特征在于，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求的步骤，具体包括：
    根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值；
    在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
  6. 一种射频传输线的失配补偿装置，其特征在于，包括：
    提取单元，设置为提取射频传输线在其工作频段上的散射参数；
    计算单元，设置为根据所述散射参数计算所述射频传输线需要补偿的阻抗值；
    处理单元，设置为基于所述需要补偿的阻抗值，确定需要在所述射频传输线上添加的开路传输线的参数，以基于添加的所述开路传输线对所述射频传输线进行失配补偿。
  7. 根据权利要求6所述的射频传输线的失配补偿装置，其特征在于，所述提取单元具体设置为：
    通过软件仿真的方式在所述射频传输线所在的电路图中提取所述射频传输线在其工作频段上的散射参数；
    通过矢量网络分析仪在所述射频传输线所在的电路板中提出所述射频传输线在其工作频段上的散射参数。
  8. 根据权利要求6所述的射频传输线的失配补偿装置，其特征在于，所述提取单元还设置为，当在所述射频传输线上添加所述开路传输线之后，提取所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数；
    所述失配补偿装置还包括：验证单元，设置为根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，验证所述射频传输线和所述开路传输线的阻抗值是否符合要求。
  9. 根据权利要求8所述的射频传输线的失配补偿装置，其特征在于，所述验证单元还设置为：
    若确定所述射频传输线和所述开路传输线的阻抗值不符合要求，则调整所述开路传输线的参数，并再次验证所述射频传输线和所述开路传输线的阻抗值是否符合要求，直到所述射频传输线和所述开路传输线的阻抗值 符合要求为止。
  10. 根据权利要求8或9所述的射频传输线的失配补偿装置，其特征在于，所述验证单元具体设置为：
    根据所述射频传输线和所述开路传输线在所述射频传输线的工作频段上的散射参数，确定所述射频传输线和所述开路传输线的阻抗值，在所述射频传输线和所述开路传输线的阻抗值处于预定阻抗值范围内时，确定所述射频传输线和所述开路传输线的阻抗值符合要求。
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