TW201731161A - Antenna phase correction method and correction device with which the beam of an antenna can be oriented in an expected angle so as to increase the communication efficiency - Google Patents

Abstract

The present invention provides an antenna phase correction method which includes a beam angle calculation step, a beam angle adjustment step, an antenna radiation measurement step, and a beam angle correction step. When it is determined to be necessary to correct the beam direction of the antenna based on an error level between an ideal beam angle value and an actual beam angle value, a current ideal beam angle value is combined with the error level in algorithm to calculate a corrected ideal beam angle value serving as an ideal beam angle value for outputting and executing the next turn. Through the correction algorithm in consideration of the error level between the ideal beam angle value and the actual beam angle value, the beam of the antenna can be oriented in an expected angle so that the entire antenna system will not be affected by the temperature variation which may cause an error in the direction of the beam, thereby increasing the communication efficiency of the antenna system.

Description

Antenna phase correction method and calibration device

The present invention relates to a phase correction method and a correction device, and more particularly to an antenna phase correction method and a correction device.

The conventional antenna system controls the phase control module of the system and adjusts the beam direction through an algorithm. However, the phase control module of the system is susceptible to temperature interference and causes errors, and thus the beam direction of the antenna system is actually It is difficult to adjust to the correct direction, so the optimization program can only be continuously implemented to enhance the communication strength of the antenna system. However, excessive execution of the optimization program can easily cause the operating temperature of the phase control module of the system to rise and cause errors.

Although the antenna system has been proposed to set the thermometer and coolant beside the phase control module of the system, so that the temperature of the phase control module is in a controllable range to avoid the influence of temperature rise, this setting can be effectively controlled. The operating temperature of the phase control module, but will also greatly increase the installation cost of the antenna system.

Therefore, it is necessary to provide an antenna phase correction method and a correction device for solving the lack of the prior art.

It is an object of the present invention to provide an antenna phase correction method and correction apparatus that do not require consideration of the operating temperature of an electronic phase shifter.

To achieve the above and other objects, the present invention provides an antenna phase correction method for correcting a beam direction of an antenna controlled by a phase control module, the method comprising a beam angle calculation step, a beam angle adjustment step, and an antenna radiation measurement step. And beam angle correction steps. The beam angle calculation step calculates an ideal beam angle value according to the set beam direction, calculates an ideal antenna phase value through an algorithm, and outputs the phase value to the phase control module. The beam angle adjustment step is performed by the phase control module to adjust the beam direction radiated by the antenna according to the ideal antenna phase value. The antenna radiation measurement step is to actually measure the beam direction of the antenna to obtain the actual beam angle value. The beam angle correction step compares the degree of error between the actual beam angle values of the ideal beam angle value, determines the beam direction of the antenna to be corrected according to the degree of the error, returns to the beam angle calculation step, and uses the current ideal beam angle value Calculate the corrected ideal beam angle value by combining the error degree, and then calculate the ideal antenna phase value for the next round of patrol through the algorithm, and output it to the phase control module to continue the subsequent steps until the ideal beam angle value and the actual beam angle value. The degree of error between them is less than the set error range.

In an embodiment of the present invention, in the beam angle adjustment step, when the phase control module receives the revised ideal antenna phase value, the beam direction of the antenna is adjusted according to the revised ideal antenna phase value.

In an embodiment of the invention, the algorithm is a genetic algorithm.

To achieve the above and other objects, the present invention further provides an antenna phase correcting device for adjusting a beam angle of an antenna. The correcting device includes a computing module, a phase control module, and a measuring module. The calculation module calculates an ideal beam angle value according to the set beam direction, and calculates an ideal antenna phase value through an algorithm. The phase control module is coupled to the calculation module, and adjusts the beam direction radiated by the antenna according to the received ideal antenna phase value. Measuring module coupling A computing module is provided for actually measuring the radiation condition of the antenna to generate and output an actual beam angle value to the computing module. Wherein, the calculation module compares the error degree between the ideal beam angle value and the actual beam angle value, and determines the beam direction of the antenna to be corrected according to the degree of error, and calculates the corrected error degree by combining the current ideal beam angle value The ideal beam angle value is calculated by the algorithm to calculate the phase value of the ideal antenna for the next round of patrol, and output to the phase control module for the next adjustment control until the error degree between the ideal beam angle value and the actual beam angle value Less than the set error range.

In an embodiment of the invention, when the phase control module receives the revised ideal antenna phase value, the beam direction of the antenna is adjusted according to the revised ideal antenna phase value.

In an embodiment of the invention, the algorithm is a genetic algorithm.

In an embodiment of the invention, the phase control module is an electronic phase shifter.

In an embodiment of the invention, the antenna is an array antenna.

In an embodiment of the invention, the base station antenna.

Therefore, the antenna phase correction method and the calibration device of the present invention are performed by considering a correction algorithm for the degree of error between the ideal beam angle value and the actual beam angle value, so that the antenna phase change can meet the expected target, so that the antenna is The beam can be at an expected angle, so that the entire antenna system does not cause errors in the beam direction due to the difference in temperature, and increases the communication efficiency of the antenna system.

1‧‧‧ calibration device

2‧‧‧Antenna

10‧‧‧Computation Module

20‧‧‧ Phase Control Module

30‧‧‧Measurement module

S01~S07‧‧‧Steps

Fig. 1 is a functional block diagram of an antenna phase correcting device in an embodiment of the present invention.

FIG. 2 is a flowchart of a method for correcting an antenna phase in an embodiment of the present invention.

In order to fully understand the objects, features and advantages of the present invention, the present invention will be described in detail by the accompanying drawings. For high-gain and high-directional base station antenna systems or smart antenna systems, these antenna systems usually use the form of array antennas to achieve high gain and high directivity, and adjust the beam direction of the antenna to achieve Enhance service performance to the receiving end of a particular area. It should be noted that the beam direction described in the embodiments in the present invention refers to the main beam direction of the antenna, but not limited thereto, and the beam in a specific direction radiated from the antenna can also be applied to the present invention. .

Please refer to FIG. 1, which is a functional block diagram of an antenna phase correcting apparatus according to an embodiment of the present invention. The calibration device 1 is configured to control the antenna 2, wherein the calibration device 1 includes a calculation module 10, a phase control module 20, and a measurement module 30.

The calculation module 10 can be used to calculate an ideal beam angle value according to a beam direction set by a user when the user wants to adjust the beam direction of the antenna 2, and calculate an ideal antenna phase value through an algorithm, and The ideal antenna phase value is output. Wherein, the algorithm is a gene algorithm, and those having ordinary knowledge in the technical field of the present invention can understand that the gene algorithm is an optimization method developed by mimicking the biological evolution mechanism of nature, and is implemented in a gene algorithm. In each generation's solution, after considering the degree of adaptation, it evolves and produces a solution for the next generation, thereby obtaining a more appropriate solution.

The phase control module 20 is coupled to the computing module 10. After the phase control module 20 receives the ideal antenna phase value, the phase control module 20 adjusts the day according to the ideal antenna phase value. The phase of line 2, in turn, changes the direction of the beam radiated by antenna 2. The phase control module 20 can be an electronic phase shifter.

The measurement module 30 is coupled to the computing module 10. After the beam direction of the antenna 2 is changed, the measurement module 30 measures the actual radiation condition of the antenna 2, thereby obtaining an actual beam angle value, and the measurement module 30 outputs the actual beam angle value to the calculation module 10.

Because the phase control module 20 may be unable to accurately adjust the direction to the set direction when the antenna 2 is actually adjusted due to external factors such as temperature and electromagnetic interference, the beam direction actually radiated by the antenna 2 cannot be expected. After the calculation module 10 receives the actual beam angle value output by the measurement module 30, the calculation module 10 compares and calculates the degree of error between the ideal beam angle value and the actual beam angle value. If the error degree is less than the set error range, the radiation direction of the beam representing the antenna 2 is actually in the correct direction, and the beam direction of the antenna 2 does not need to be further corrected; and if the error degree is not within the allowable error range, then The radiation direction of the beam representing the antenna 2 actually has an excessive deviation, and the control amount of the phase control module 20 that controls the beam direction of the antenna 2 must be further corrected. At this time, the calculation module 10 will measure the error degree, calculate the corrected ideal beam angle value, and calculate the ideal antenna phase value for performing the next round of patrol through the algorithm, and output it to the phase control module 20 to execute the next round. The patrol beam angle adjustment step. The newly corrected ideal beam angle value is continuously generated through the round robin mode until the error degree between the ideal beam angle value and the actual beam angle value is less than the set error range, that is, the calibration operation is stopped.

In an embodiment, when the phase control module 20 receives the corrected ideal antenna phase value, the phase control module 20 adjusts the beam direction of the antenna 2 according to the corrected ideal antenna phase value; When the phase control module 20 receives the corrected ideal antenna phase value, the phase control module 20 determines the difference between the ideal antenna phase value and the corrected ideal antenna phase value. The beam direction of the antenna 2 is directly adjusted without first resetting the beam direction of the antenna 2 to the initial direction.

The correction method of the present invention will be represented by a mathematical formula in which the beam angle value to be adjusted is θ _mb ; the ideal beam angle value obtained by the gene algorithm is θ _gai , which is measured by the measurement module 30. The beam angle value is θ _i , i is the number of times; the degree of error between the ideal beam angle value and the actual beam angle value is φ _k , k is the number of times; and the allowable error range is α.

When the beam angle value to be adjusted by the antenna 2 is set to θ _mb , the first measurement is performed, at this time, i=1, θ _mb = θ _ga1 , and the actual measured beam angle value is θ ₁ , and the error degree is φ. ₁ = θ _{ga1 -} θ ₁ , if | φ ₁ | > α (ie, the degree of error is greater than the allowable error range), the second measurement is taken. When the second measurement is performed, the first error degree φ _{1 is taken} into consideration, at which time i=2, θ _ga2 = θ _ga1 + φ ₁ , and the actual measured beam angle value is θ ₂ , the error The degree is φ ₂ = θ _{ga2 -} θ ₂ , and if | φ ₂ | > α, the third measurement is continued, i=3, θ _ga3 = θ _ga2 + φ ₂ , until | φ _k | ≦ α The degree of error is less than the set error range, and the correction method is ended.

Please refer to FIG. 2, which is a flowchart of a method for correcting an antenna phase according to an embodiment of the present invention.

First, when the beam direction of the antenna is determined, the process proceeds to step S01, and the method of correcting the antenna phase is started. Then, the beam angle calculation step S02 is performed, and the ideal beam angle value is calculated according to the set beam direction, and the ideal antenna phase value is calculated by the algorithm and output to the phase control module. Next, a beam angle adjustment step S03 is performed, and the phase control module adjusts the beam direction radiated by the antenna according to the ideal antenna phase value. Next, an antenna radiation measuring step S04 is performed to actually measure the beam direction of the antenna to obtain an actual beam angle value. Then, the determining step S05 is performed to compare the degree of error between the ideal beam angle value and the actual beam angle value, when the error degree exceeds the setting In the error range, the beam angle correction step S06 is performed, otherwise, the process proceeds to step S07 to end the correction method. In the above execution step, the beam angle correction step S06 is used in the algorithm to calculate the corrected ideal beam angle value by combining the current ideal beam angle values with the error degree, and then calculating the ideal antenna phase value for the next round of patrol through the algorithm. And output to the phase control module to perform the beam angle adjustment step of the next round of patrol.

Therefore, the antenna phase correction method and the calibration device of the present invention are performed by considering a correction algorithm for the degree of error between the ideal beam angle value and the actual beam angle value, so that the antenna phase change can meet the expected target, so that the antenna is The beam can be at an expected angle, so that the entire antenna system does not cause errors in the beam direction due to the difference in temperature, and increases the communication efficiency of the antenna system.

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

S01~S07‧‧‧Steps

Claims (7)

An antenna phase correction method for correcting a beam direction of an antenna controlled by a phase control module, the method comprising: a beam angle calculation step, calculating an ideal beam angle value according to the set beam direction, and transmitting a The algorithm calculates an ideal antenna phase value and outputs to the phase control module; a beam angle adjustment step, the phase control module adjusts a beam direction radiated by the antenna according to the ideal antenna phase value; and an antenna radiation measuring step, Actually measuring a beam direction of the antenna to obtain an actual beam angle value; and a beam angle correction step of comparing an error degree between the ideal beam angle value and the actual beam angle value, and determining, according to the degree of the error, the antenna to be corrected In the beam direction, returning to the beam angle calculation step, and calculating the corrected ideal beam angle value by combining the current beam angle value with the current error angle value, and calculating the ideal antenna phase for performing the next round of patrol through the algorithm. Value and output to the phase control module to continue the next steps until Over the beam angle values of the degree of error between the actual value is smaller than the angle of the beam until the error range of the set. The method for correcting an antenna phase according to claim 1, wherein the algorithm is a genetic algorithm. An antenna phase correcting device for adjusting a beam angle of an antenna, the correcting device comprising: a computing module calculates an ideal beam angle value according to the set beam direction, and calculates an ideal antenna phase value through an algorithm; a phase control module is coupled to the computing module, according to the received The ideal antenna phase value adjusts the beam direction radiated by the antenna; and a measurement module coupled to the calculation module for actually measuring the radiation condition of the antenna to generate and output an actual beam angle value To the computing module, wherein the computing module compares the degree of error between the ideal beam angle value and the actual beam angle value, and determines the beam direction of the antenna to be corrected according to the degree of the error, to the current ideal beam The angle value is combined with the error degree, and the corrected ideal beam angle value is calculated, and the ideal antenna phase value of the next round of patrol is calculated by the algorithm, and output to the phase control module for the next adjustment control. Until the degree of error between the ideal beam angle value and the actual beam angle value is less than the set error range. The apparatus for correcting an antenna phase according to claim 5, wherein the algorithm is a genetic algorithm. The apparatus for correcting an antenna phase according to claim 5, wherein the phase control module is an electronic phase shifter. The apparatus for correcting an antenna phase according to claim 5, wherein the antenna is an array antenna. The apparatus for correcting an antenna phase according to claim 5, wherein the antenna is a base station antenna.