A method, apparatus, electronic device, and storage medium for adjusting the impedance of a transmission line.

Abstract

This invention provides a method, apparatus, electronic device, and storage medium for impedance adjustment of a transmission line. The method includes: acquiring the voltages of multiple target points on a target transmission line; determining the target reflection coefficient corresponding to each target point based on the voltages of the multiple target points; and adjusting the impedance of the target transmission line based on the target reflection coefficient corresponding to each target point. This invention enables impedance adjustment of an antenna transmission line without the need for an impedance detector, reducing the cost of adjustment.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to a method, apparatus, electronic device, and storage medium for adjusting the impedance of a transmission line. Background Technology

[0002] In communication systems, in order to maximize the radiation of the transmitted power from the transmitter into free space through the antenna, it is necessary to ensure that the output impedance of the transmitter is conjugate matched with the impedance of the antenna.

[0003] Antenna impedance is related not only to the antenna's structure, dimensions, and operating frequency, but also to the external environment. Changes in antenna impedance caused by variations in the external environment can lead to mismatch in the communication system, thereby increasing the bit error rate. The technical solution to this problem is an adaptive matching network. However, current adaptive matching networks require the deployment of impedance detectors, which is costly. Summary of the Invention

[0004] In view of the above problems, an impedance adjustment method, apparatus, electronic device, and storage medium for transmission lines are proposed to overcome or at least partially solve the above problems, comprising:

[0005] An impedance adjustment method for a transmission line, the method comprising:

[0006] Obtain the voltage at multiple target points on the target transmission line;

[0007] Based on the voltage of the multiple target points, determine the target reflection coefficient corresponding to each target point;

[0008] The impedance of the target transmission line is adjusted according to the target reflection coefficient corresponding to each target point.

[0009] Optionally, adjusting the impedance of the target transmission line according to the target reflection coefficient corresponding to each target point includes:

[0010] Determine the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target;

[0011] The impedance of the target transmission line is adjusted according to the signs of the real and imaginary parts of the reflection coefficient of each target.

[0012] Optionally, adjusting the impedance of the target transmission line according to the signs of the real and imaginary parts of the reflection coefficients of each target includes:

[0013] Based on the signs of the real and imaginary parts of the reflection coefficient of each target, the mapping region of each target point in the preset equal impedance circle is determined.

[0014] The impedance of the target transmission line is adjusted according to the mapping area of ​​each target point in the preset equal impedance circle.

[0015] Optionally, adjusting the impedance of the target transmission line according to the mapping region of each target point in the preset equal impedance circle includes:

[0016] Based on the mapping region of each target point in the preset equal impedance circle, determine the mapping region of an auxiliary point.

[0017] The impedance of the target transmission line is adjusted according to the mapping area of ​​each target point in the preset equal impedance circle, and the mapping area where the auxiliary point is located.

[0018] Optionally, determining the mapping region of an auxiliary point based on the mapping region of each target point in a preset equiimpedance circle includes:

[0019] The mapping region of the auxiliary point is determined based on the mapping region of each target point in the preset equal impedance circle and the voltage measured at each target point.

[0020] Optionally, the plurality of target points include the location of the antenna of the target transmission line, a location one-eighth wavelength away from the antenna, and a location one-quarter wavelength away from the antenna; each target point is equipped with a voltage detector;

[0021] The acquisition of voltages at multiple target points on the target transmission line includes:

[0022] From the voltage detectors corresponding to each target point, obtain the voltage corresponding to the position of the antenna of the target transmission line, the position one-eighth wavelength away from the antenna, and the position one-quarter wavelength away from the antenna on the target transmission line.

[0023] Optionally, a series inductor and an adjusting resistor are deployed on the target transmission line, and the adjustment of the impedance of the target transmission line includes:

[0024] The series inductor and regulating resistor are adjusted to adjust the impedance of the target transmission line to a conjugate match with the output impedance of the transmitter.

[0025] This invention also provides an impedance adjustment device for a transmission line, the device comprising:

[0026] The acquisition module is used to acquire the voltage of multiple target points on the target transmission line;

[0027] The determination module is used to determine the target reflection coefficient corresponding to each target point based on the voltage of the plurality of target points;

[0028] The adjustment module is used to adjust the impedance of the target transmission line according to the target reflection coefficient corresponding to each target point.

[0029] Optionally, the adjustment module is used to determine the sign of the real part and the sign of the imaginary part of each target reflection coefficient; and to adjust the impedance of the target transmission line according to the sign of the real part and the sign of the imaginary part of each target reflection coefficient.

[0030] Optionally, the adjustment module is used to determine the mapping region of each target point in a preset equal impedance circle based on the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target; and to adjust the impedance of the target transmission line based on the mapping region of each target point in the preset equal impedance circle.

[0031] Optionally, the adjustment module is used to determine the mapping region of an auxiliary point based on the mapping region of each target point in the preset equal impedance circle; and to adjust the impedance of the target transmission line based on the mapping region of each target point in the preset equal impedance circle and the mapping region of the auxiliary point.

[0032] Optionally, the adjustment module is used to determine the mapping area of ​​the auxiliary point based on the mapping area of ​​each target point in the preset equal impedance circle and the voltage measured at each target point.

[0033] Optionally, the plurality of target points include the location of the antenna of the target transmission line, a location one-eighth wavelength away from the antenna, and a location one-quarter wavelength away from the antenna; each target point is equipped with a voltage detector;

[0034] The acquisition module is used to acquire the voltage corresponding to the position of the antenna of the target transmission line, the position at a distance of one-eighth wavelength from the antenna, and the position at a distance of one-quarter wavelength from the antenna from the voltage detectors corresponding to each target point.

[0035] Optionally, the adjustment module is used to adjust the series inductor and the adjustment resistor to adjust the impedance of the target transmission line to match the output impedance of the transmitter.

[0036] This invention also provides an electronic device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, it implements the above-described impedance adjustment method for transmission lines.

[0037] This invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described impedance adjustment method for transmission lines.

[0038] The embodiments of the present invention have the following advantages:

[0039] In this embodiment of the invention, the voltages of multiple target points on the target transmission line are acquired; based on the voltages of the multiple target points, the target reflection coefficient corresponding to each target point is determined; and based on the target reflection coefficient corresponding to each target point, the impedance of the target transmission line is adjusted. This embodiment of the invention enables impedance adjustment of the antenna transmission line without the need for an impedance detector, reducing the cost of adjustment. Attached Figure Description

[0040] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart illustrating the steps of an impedance adjustment method for a transmission line according to an embodiment of the present invention.

[0042] Figure 2 This is a flowchart illustrating the steps of another method for adjusting the impedance of a transmission line according to an embodiment of the present invention.

[0043] Figure 3a This is a schematic diagram of the reflection coefficient coordinates according to an embodiment of the present invention;

[0044] Figure 3b This is a schematic diagram of a preset equal impedance circle according to an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the structure of a transmission line according to an embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of another transmission line structure according to an embodiment of the present invention;

[0047] Figure 6a This is a schematic diagram of an adjustment process according to an embodiment of the present invention;

[0048] Figure 6b This is a schematic diagram of another adjustment process according to an embodiment of the present invention;

[0049] Figure 6c This is a schematic diagram of another adjustment process according to an embodiment of the present invention;

[0050] Figure 6d This is a schematic diagram of another adjustment process according to an embodiment of the present invention;

[0051] Figure 7This is a schematic diagram of the structure of an impedance adjustment device for a transmission line according to an embodiment of the present invention. Detailed Implementation

[0052] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] In the process of antenna matching design, radio frequency transmission requires an antenna and a coaxial cable. We always hope to transmit radio frequency signals over as long a distance as possible. In order to transmit signals over a longer distance, we often hope to use a large power to transmit signals to cover a larger communication range.

[0054] Since the antenna impedance changes with the environment, a matching circuit containing impedance adjustment devices is needed to compensate for the difference between the antenna impedance and the ideal impedance in real time, so that the transmission line always tends to the optimal matching impedance, thereby maximizing the output power.

[0055] In practical applications, impedance detectors can be deployed in the antenna, and adjustments can be made based on the detection results. However, this method is costly. To reduce the cost of antenna impedance adjustment, this invention provides an impedance adjustment method for a transmission line, which can be a wire or coaxial cable connecting the antenna. The method involves acquiring the voltage at multiple points on the transmission line and determining the reflection coefficient at each point based on the voltage. Since the reflection coefficient is correlated with impedance, the impedance of the transmission line can be adjusted based on the reflection coefficient. Therefore, impedance adjustment of the antenna transmission line can be achieved without an impedance detector, reducing the adjustment cost.

[0056] Reference Figure 1 The diagram illustrates a flowchart of a transmission line impedance adjustment method according to an embodiment of the present invention, which may include the following steps:

[0057] Step 101: Obtain the voltage of multiple target points on the target transmission line.

[0058] In practical applications, multiple target points can be pre-selected on the target transmission line; then, voltage detectors can be deployed at the locations of these multiple target points.

[0059] While the target transmission line is in operation, the voltage detector can monitor the voltage at multiple target points in real time.

[0060] Step 102: Determine the target reflection coefficient corresponding to each target point based on the voltage of multiple target points.

[0061] After determining the voltage at each target point, the target reflection coefficient corresponding to each target point can be determined based on the voltage at each target point; the target reflection coefficient can be referred to as the ratio of reflected voltage to incident voltage.

[0062] Step 103: Adjust the impedance of the target transmission line according to the target reflection coefficient corresponding to each target point.

[0063] After determining the target reflection coefficient for each target point, the impedance of the target transmission line can be adjusted based on the relationship between the reflection coefficient and impedance. Specifically, the target transmission line is equipped with a series inductor and an adjustable resistor, and the impedance adjustment can be achieved through sub-steps:

[0064] Sub-step 11: Adjust the series inductor and regulating resistor to adjust the impedance of the target transmission line to be conjugate matched with the output impedance of the transmitter.

[0065] When adjusting the target transmission line, the series inductor and regulating resistor can be adjusted based on the target reflection coefficient corresponding to each target point, so as to adjust the impedance of the target transmission line to match the output impedance of the transmitter.

[0066] As an example, the output impedance of the transmitter can be preset; then, the impedance of the target transmission line is adjusted to match the preset output impedance of the transmitter. The output impedance of the transmitter can be set according to the actual situation, for example, 50Ω. This embodiment of the invention does not limit this.

[0067] In this embodiment of the invention, the voltages of multiple target points on the target transmission line are acquired; based on the voltages of the multiple target points, the target reflection coefficient corresponding to each target point is determined; and based on the target reflection coefficient corresponding to each target point, the impedance of the target transmission line is adjusted. This embodiment of the invention enables impedance adjustment of the antenna transmission line without the need for an impedance detector, reducing the cost of adjustment.

[0068] Reference Figure 2 The diagram illustrates a flowchart of another method for adjusting the impedance of a transmission line according to an embodiment of the present invention, which may include the following steps:

[0069] Step 201: Multiple target points include the location of the antenna of the target transmission line, the location at one-eighth wavelength from the antenna, and the location at one-quarter wavelength from the antenna; each target point is equipped with a voltage detector; from the voltage detectors corresponding to each target point, obtain the voltages corresponding to the location of the antenna of the target transmission line, the location at one-eighth wavelength from the antenna, and the location at one-quarter wavelength from the antenna.

[0070] In practical applications, multiple target locations can include the location of the target transmission line's antenna, the location one-eighth of a wavelength away from the antenna, and the location one-quarter of a wavelength away from the antenna.

[0071] When acquiring the voltage at multiple target points, the voltage corresponding to the position of the antenna on the target transmission line, the position one-eighth of a wavelength away from the antenna, and the position one-quarter of a wavelength away from the antenna can be acquired separately.

[0072] Step 202: Determine the target reflection coefficient corresponding to each target point based on the voltage of multiple target points.

[0073] After determining the voltage at each target point, the target reflection coefficient corresponding to each target point can be determined based on the voltage at each target point.

[0074] Step 203: Determine the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target.

[0075] After determining the reflection coefficient of each target, the real and imaginary parts of the reflection coefficient of each target can be extracted.

[0076] Then, the signs of the real part and the imaginary part of the reflection coefficient of each target can be determined.

[0077] Step 204: Adjust the impedance of the target transmission line according to the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target.

[0078] After determining the signs of the real and imaginary parts of each target reflection coefficient, the impedance of the target transmission line can be adjusted based on the signs of the real and imaginary parts of each target reflection coefficient.

[0079] Specifically, the series inductor and the regulating resistor can be adjusted according to the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target, so as to adjust the impedance of the target transmission line to be conjugate matched with the output impedance of the transmitting source. This embodiment of the invention does not limit this.

[0080] In one embodiment of the present invention, step 204 may include the following sub-steps:

[0081] Sub-step 21: Determine the mapping region of each target point in the preset equal impedance circle based on the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target.

[0082] In practical applications, a preset equal impedance circle can be set; then, based on the signs of the real and imaginary parts of the reflection coefficients of each target, the mapping region of each target point within the preset equal impedance circle can be determined; for example... Figure 3a The region can be determined based on the signs of the real and imaginary parts of the target's reflectance coefficient; then, based on the determined region, from... Figure 3b The corresponding region is determined as the mapping region.

[0083] For example: if a target's reflectance corresponds to Figure 3a If we consider Ⅰ, then we can determine its mapping region as Ⅰ. Figure 3b I in the middle.

[0084] Sub-step 22: Adjust the impedance of the target transmission line according to the mapping area of ​​each target point in the preset equal impedance circle.

[0085] After determining the mapping region of each target point in the preset equal impedance circle, the impedance of the target transmission line can be adjusted according to the mapping region of each target point in the preset equal impedance circle. Specifically, the steps of adjusting the impedance of the target transmission line according to the mapping region of each target point in the preset equal impedance circle can be performed based on the binary search method.

[0086] As an example, sub-step 12 can be implemented as follows:

[0087] Based on the mapping area of ​​each target point in the preset equal impedance circle, determine the mapping area of ​​an auxiliary point; based on the mapping area of ​​each target point in the preset equal impedance circle and the mapping area of ​​the auxiliary point, adjust the impedance of the target transmission line.

[0088] In practical applications, the mapping area of ​​the target point in the preset equal impedance circle may not be suitable for adjustment; in this case, an auxiliary point is constructed; specifically, the mapping area of ​​the auxiliary point in the preset equal impedance circle can be determined based on the mapping area of ​​each target point in the preset equal impedance circle.

[0089] Then, using this auxiliary point as a starting point, and in conjunction with each target point, the impedance of the target transmission line is adjusted.

[0090] Specifically, the impedance of the target transmission line can be adjusted based on the binary search method, according to the mapping area of ​​each target point in the preset equal impedance circle, and the mapping area of ​​the auxiliary point.

[0091] In one embodiment of the present invention, the mapping area where the auxiliary point is located can be determined in the following way:

[0092] Based on the mapping region of each target point in the preset equal impedance circle, and the voltage measured at each target point, the mapping region of the auxiliary point is determined.

[0093] In practical applications, the series inductor and regulating resistor corresponding to the target point can be adjusted in advance, and the voltage of each target point can be monitored in real time. Then, when the voltage of the target point is the same, the adjustment value is recorded, and the mapping area of ​​the estimated auxiliary point is determined based on the adjustment.

[0094] In this embodiment of the invention, multiple target points include the position of the antenna of the target transmission line, a position at a distance of one-eighth wavelength from the antenna, and a position at a distance of one-quarter wavelength from the antenna. A voltage detector is deployed at each target point. The voltages corresponding to the antenna position, the position at a distance of one-eighth wavelength from the antenna, and the position at a distance of one-quarter wavelength from the antenna are obtained from the voltage detectors corresponding to each target point. Based on the voltages of the multiple target points, the target reflection coefficient corresponding to each target point is determined. The signs of the real and imaginary parts of each target reflection coefficient are determined. Based on the signs of the real and imaginary parts of each target reflection coefficient, the impedance of the target transmission line is adjusted. Through this embodiment of the invention, impedance adjustment of the antenna transmission line can be achieved without an impedance detector, reducing the adjustment cost.

[0095] To further illustrate the impedance adjustment method for the transmission line described above, the following examples are provided in conjunction with the accompanying drawings:

[0096] Step a: As Figure 4 The voltage at three points on the transmission line at -90°, -45°, and 0° is measured, and the signs of the real and imaginary parts of the reflection coefficient are calculated.

[0097] Step b: Using the binary search algorithm and the feedback information from step a, converge the matching network to the optimal matching point.

[0098] The specific steps for measuring the voltage of the transmission line at three points (-90°, -45°, 0°) in step a, and converting this voltage to obtain the signs of the real and imaginary parts of the reflection coefficient, include:

[0099] (1) Place voltage detectors at three locations: at the antenna, at a distance of one-eighth wavelength from the antenna, and at a distance of one-quarter wavelength from the antenna.

[0100] (2) Measure the square of the effective voltage at these three points. This index is proportional to the power at that point.

[0101]

[0102] Among them, P C P represents the power at point C. B P represents the power at point B. A V represents the power at point A. C The voltage at point C is represented by V. B The voltage at point B, V A Let Γ represent the voltage at point A, Γ be the reflection coefficient, k be the proportionality coefficient, and θ be the angle corresponding to ABC (e.g., A corresponds to -90°).

[0103] (3) The outputs of the three voltage detectors are converted into the signs of the real and imaginary parts of the reflection coefficient by passing them through several adders and subtractors.

[0104] Further analysis shows that the real and imaginary parts of the reflection coefficient can be expressed as equation (2). Therefore, the signs of the real and imaginary parts of the reflection coefficient can be obtained through a voltage detector, an adder, and a comparator.

[0105]

[0106] Among them, Γ x Γ represents the imaginary part of the reflection coefficient. y This represents the real part of the reflection coefficient.

[0107] Step b, which utilizes the binary search algorithm and the feedback information from step a to converge the matching network to the optimal matching point, specifically involves the following method:

[0108] (1) Use the binary search convergence criterion to determine whether the system is applicable;

[0109] For matching networks (such as...) Figure 5 As shown, including adjustable devices X2 and X3, and fixed device X1), the following criterion (3) must be met.

[0110]

[0111] Where Im is the impedance. Input impedance.

[0112] For matching networks (such as...) Figure 5 As shown, including adjustable devices X1 and X3, and fixed device X2), the following criterion (4) must be met.

[0113]

[0114] (2) First, match the type of the network and determine the initial state of the system according to the voltages at three points.

[0115] Determine the initial state of the system according to the voltages at three points and select an appropriate adjustment strategy.

[0116] (3) Select an appropriate binary search adjustment strategy to accelerate the convergence process.

[0117] Strategy 1:

[0118] Match the network (adjustable devices X2, X3, fixed device X1): As Figure 6a shown, assume that the input resistance is positively correlated with X2, then:

[0119] Case 1: Гx(A) < 0 or Гx(C) < 0

[0120] As Figure 6a shown, the adjustment sequence is {A, A21, A22, A23, A24...};

[0121] As Figure 6a shown, adjust point A. Since Xin(A) < j50, increase X2. Point A is adjusted clockwise along the constant impedance circle to A21. Then decrease X3 to adjust A21 to A22. Continue to increase X2 to adjust A22 to A23. Then decrease X3 to adjust A23 to A24. Continue to alternately adjust X2 and X3 to make Rin(An) gradually approach 50Ω to achieve the required impedance matching accuracy.

[0122] Case 2: Гx(A) > 0 & Гx(C) > 0 & Гy(A) > 0 & Гy(C) < 0

[0123] As Figure 6a shown, the adjustment sequence is {A`, A11, A12, A13...};

[0124] As Figure 6a shown, adjust point A`. Since Xin(A`) > j50, decrease X3. A` is adjusted to A11. Continue to increase X2. A11 is adjusted clockwise along the constant impedance circle to A12. Then decrease X3 to adjust A12 to A13. Continue to alternately adjust X2 and X3 to make Rin(An) gradually approach 50Ω to achieve the required impedance matching accuracy.

[0125] Case 3: Гx(A) > 0 & Гx(C) > 0 & Гy(A) < 0 & Гy(C) < 0

[0126] As Figure 6b shown, the adjustment sequence is {A, A1, A2, A3...};

[0127] As Figure 6bAs shown, adjust point A. Since Xin(A) < -j50, increase X2 and adjust A clockwise along the equal impedance circle to A1. Then decrease X3 to adjust A1 to A2. Then increase X2 to adjust A2 to A3. Continue to adjust X3 and X2 alternately to make Rx(An) gradually approach 50Ω to achieve the required impedance matching accuracy.

[0128] Strategy 2:

[0129] Matching network (adjustable components X2 and X3, fixed component X1): such as Figure 6b As shown, assuming the input resistance is negatively correlated with X2, then:

[0130] Case 1: Гx(B)<0 or Гx(D)<0

[0131] like Figure 6c As shown, the adjustment order is {D`, D21, D22, D23…};

[0132] like Figure 6c As shown, adjust point D`. Since Xin(D`)>-j50, increase X2, and adjust D` counterclockwise along the equal impedance circle to D21. Then increase X3, and adjust D21 to D22. Then increase X2, and adjust D22 to D23. Continue to adjust X2 and X3 alternately to make Rin(Dn) gradually approach 50Ω to achieve the required impedance matching accuracy.

[0133] Case 2: Гx(B)>0&Гx(D)>0&Гy(B)>0&Гy(D)<0

[0134] like Figure 6c As shown, the adjustment order is {D,D11,D12,D13…};

[0135] like Figure 6c As shown, adjust point D. Since Xin(D) < -j50, increase X3 and adjust D to D11. Increase X2 and adjust D11 counterclockwise along the equal impedance circle to D12. Increase X3 again and adjust D12 to D13. Continue to adjust X3 and X2 alternately to make Rin(Dn) gradually approach 50Ω to achieve the required impedance matching accuracy.

[0136] Case 3: Гx(B)>0&Гx(D)>0&Гy(D)>0&Гy(B)>0

[0137] like Figure 6d As shown, the adjustment order is {D,D1,D2,D3…};

[0138] like Figure 6dAs shown, adjust point D. Since Xin(D)>j50, increase X2. Adjust D counterclockwise along the equal impedance circle to D1. Then decrease X3. Adjust D1 to D2. Then increase X2. Adjust D2 to D3. Continue to adjust X3 and X2 alternately to make Rin(Dn) gradually approach 50Ω to achieve the required impedance matching accuracy.

[0139] It should be noted that in Strategy 2, the voltages at points A and C can be equalized by adjusting X3 first; at this point, the adjustment amount of X3 can be determined; then, the region where point D is located can be determined based on this adjustment amount and point B.

[0140] Strategy 3:

[0141] Matching network (adjustable components X1 and X3, fixed component X2)

[0142] The adjustment method is the same as that of the matching network (adjustable devices X2 and X3, fixed device X1), only X1 needs to be replaced with X2, which will not be described in detail here.

[0143] It should be noted that the adjustment trajectory in the figure is actually obtained by searching using the binary search method.

[0144] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0145] Reference Figure 7 The diagram shows a schematic of the structure of a transmission line impedance adjustment device according to an embodiment of the present invention, which may include the following modules:

[0146] The acquisition module 701 is used to acquire the voltage of multiple target points on the target transmission line;

[0147] The determination module 702 is used to determine the target reflection coefficient corresponding to each target point based on the voltage of multiple target points;

[0148] The adjustment module 703 is used to adjust the impedance of the target transmission line according to the target reflection coefficient corresponding to each target point.

[0149] In an optional embodiment of the present invention, the adjustment module 703 is used to determine the sign of the real part and the sign of the imaginary part of each target reflection coefficient; and to adjust the impedance of the target transmission line according to the sign of the real part and the sign of the imaginary part of each target reflection coefficient.

[0150] In an optional embodiment of the present invention, the adjustment module 703 is used to determine the mapping region of each target point in a preset equal impedance circle based on the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target; and to adjust the impedance of the target transmission line based on the mapping region of each target point in the preset equal impedance circle.

[0151] In an optional embodiment of the present invention, the adjustment module 703 is used to determine the mapping region of an auxiliary point based on the mapping region of each target point in the preset equal impedance circle; and to adjust the impedance of the target transmission line based on the mapping region of each target point in the preset equal impedance circle and the mapping region of the auxiliary point.

[0152] In an optional embodiment of the present invention, the adjustment module 703 is used to determine the mapping area of ​​the auxiliary point based on the mapping area of ​​each target point in the preset equal impedance circle and the voltage measured at each target point.

[0153] In an optional embodiment of the present invention, the plurality of target points include the location of the antenna of the target transmission line, a location one-eighth wavelength away from the antenna, and a location one-quarter wavelength away from the antenna; each target point is equipped with a voltage detector;

[0154] The acquisition module 701 is used to acquire the voltage corresponding to the position of the antenna of the target transmission line, the position one-eighth of a wavelength away from the antenna, and the position one-quarter of a wavelength away from the antenna from the voltage detectors corresponding to each target point.

[0155] In an optional embodiment of the present invention, the adjustment module 703 is used to adjust the series inductor and the adjustment resistor to adjust the impedance of the target transmission line to a conjugate match with the output impedance of the transmitter.

[0156] In this embodiment of the invention, the voltages of multiple target points on the target transmission line are acquired; based on the voltages of the multiple target points, the target reflection coefficient corresponding to each target point is determined; and based on the target reflection coefficient corresponding to each target point, the impedance of the target transmission line is adjusted. This embodiment of the invention enables impedance adjustment of the antenna transmission line without the need for an impedance detector, reducing the cost of adjustment.

[0157] This invention also provides an electronic device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, it implements the above-described impedance adjustment method for transmission lines.

[0158] This invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described method for adjusting the impedance of a transmission line.

[0159] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0160] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0161] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0162] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0163] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0164] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0165] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0166] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0167] The impedance adjustment method, apparatus, electronic device, and storage medium for a transmission line have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will know that there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for adjusting the impedance of a transmission line, characterized in that, The method includes: Obtain the voltage at multiple target points on the target transmission line; Based on the voltage of the multiple target points, determine the target reflection coefficient corresponding to each target point; Determine the sign of the real part and the sign of the imaginary part of the reflection coefficient of each target; Based on the signs of the real and imaginary parts of the reflection coefficient of each target, the mapping region of each target point in the preset equal impedance circle is determined. Based on the binary search method, the mapping region of an auxiliary point is determined according to the mapping region of each target point in the preset equal impedance circle and the voltage measured at each target point; the impedance of the target transmission line is adjusted according to the mapping region of each target point in the preset equal impedance circle and the mapping region of the auxiliary point.

2. The method according to claim 1, characterized in that, The plurality of target points include the location of the antenna of the target transmission line, a location one-eighth wavelength away from the antenna, and a location one-quarter wavelength away from the antenna; each target point is equipped with a voltage detector; The acquisition of voltages at multiple target points on the target transmission line includes: From the voltage detectors corresponding to each target point, obtain the voltage corresponding to the position of the antenna of the target transmission line, the position one-eighth wavelength away from the antenna, and the position one-quarter wavelength away from the antenna on the target transmission line.

3. The method according to any one of claims 1-2, characterized in that, The target transmission line is equipped with a series inductor and an adjustable resistor. Adjusting the impedance of the target transmission line includes: The series inductor and regulating resistor are adjusted to adjust the impedance of the target transmission line to a conjugate match with the output impedance of the transmitter.

4. An impedance adjustment device for a transmission line, characterized in that, The device includes: The acquisition module is used to acquire the voltage of multiple target points on the target transmission line; The determination module is used to determine the target reflection coefficient corresponding to each target point based on the voltage of the plurality of target points; An adjustment module is used to determine the sign of the real and imaginary parts of the reflection coefficient of each target; based on the signs of the real and imaginary parts of the reflection coefficient of each target, determine the mapping region of each target point in a preset equal impedance circle; based on a binary search method, determine the mapping region of an auxiliary point based on the mapping region of each target point in the preset equal impedance circle and the voltage measured at each target point; and adjust the impedance of the target transmission line based on the mapping region of each target point in the preset equal impedance circle and the mapping region of the auxiliary point.

5. An electronic device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the impedance adjustment method for the transmission line as described in any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the impedance adjustment method for a transmission line as described in any one of claims 1 to 3.

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