CN113347644B - Signal phase detection method of dielectric phase shifter, dielectric phase shifter and antenna - Google Patents
Signal phase detection method of dielectric phase shifter, dielectric phase shifter and antenna Download PDFInfo
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- CN113347644B CN113347644B CN202110599236.1A CN202110599236A CN113347644B CN 113347644 B CN113347644 B CN 113347644B CN 202110599236 A CN202110599236 A CN 202110599236A CN 113347644 B CN113347644 B CN 113347644B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The invention provides a signal phase detection method of a dielectric phase shifter, the dielectric phase shifter and an antenna, wherein the dielectric phase shifter comprises a metal cavity, a circuit board and a dielectric plate, the circuit board and the dielectric plate are arranged in the metal cavity, the circuit board is fixed on the metal cavity, the dielectric plate is connected to the metal cavity in a sliding mode, and the signal phase detection method of the dielectric phase shifter comprises the following steps: acquiring a corresponding signal phase of a dielectric slab at an initial position in advance; acquiring capacitance difference between the target position and the initial position of the dielectric plate and the metal cavity; and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase and the capacitance difference of the dielectric plate at the initial position. According to the method, the signal phase of the target position is obtained according to the signal phase of the initial position of the dielectric plate and the capacitance difference between the target position and the metal cavity of the dielectric plate and the initial position of the dielectric plate.
Description
Technical Field
The invention relates to the technical field of base station antennas, in particular to a method for detecting signal phase of a dielectric phase shifter, the dielectric phase shifter and an antenna.
Background
With the rapid development of the communication industry, the requirements of operators and users on network quality are continuously increased, and particularly in dense urban areas and areas with higher floors, the optimization and adjustment of the network are frequent, and the coverage area of a base station antenna is often required to be adjusted. The electric tilt antenna can conveniently adjust the coverage area of the antenna by adjusting the phase of a signal by using the internal phase shifter, and is widely applied to the field of mobile communication.
The coverage area of the electrically tunable antenna is usually adjusted by adopting a dielectric phase shifter, the dielectric phase shifter is driven by a mechanical device to move, and the signal phase of the phase shifter can be obtained by observing a scale value, so that the signal phase in the feed network is changed to achieve the purpose of adjusting the coverage area of the antenna.
The existing phase shifter is a passive device, the actual position of the phase shifter is not known, the corresponding signal phase is not clear, and the antenna is not clear of the coverage range due to the fact that the specific value of the phase is not known in the process of adjusting the coverage range of the electrically-adjustable antenna. The existing phase shifter has the problem that the signal phase is inconvenient to obtain, so that the accuracy of the coverage range of the electrically-tunable antenna is influenced.
Disclosure of Invention
The invention provides a signal phase detection method of a dielectric phase shifter, the dielectric phase shifter and an antenna, which are used for solving the problem that the accuracy of the coverage range of an electric tuning antenna is influenced due to the fact that the phase of a signal is inconvenient to obtain in the phase shifter in the prior art.
The invention provides a signal phase detection method of a dielectric phase shifter, wherein the dielectric phase shifter comprises a metal cavity, and a circuit board and a dielectric plate which are arranged in the metal cavity, the circuit board is fixed on the metal cavity, the dielectric plate is connected with the metal cavity in a sliding manner, and the signal phase detection method of the dielectric phase shifter comprises the following steps:
acquiring a corresponding signal phase of the dielectric plate at an initial position in advance;
acquiring capacitance difference between the target position and the initial position of the dielectric plate and the metal cavity;
and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase of the dielectric plate at the initial position and the capacitance difference.
According to the method for detecting the signal phase of the dielectric phase shifter provided by the invention, the step of acquiring the corresponding signal phase of the dielectric plate at the target position specifically comprises the following steps:
acquiring voltage differences between the metal cavity and the dielectric plate at the target position and the initial position according to capacitance differences between the metal cavity and the dielectric plate at the target position and the initial position;
And acquiring a corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase of the dielectric plate at the initial position and the voltage difference.
According to the signal phase detection method of the dielectric phase shifter provided by the invention, the corresponding signal phase of the dielectric plate at the target position is specifically obtained through the following formula:
θ1＝θ0+k×ΔV；
wherein, theta1Is the corresponding signal phase when the dielectric slab is at the target position; theta0Is the corresponding signal phase of the medium plate at the initial position; k is a constant; Δ V is the voltage difference between the dielectric plate and the metal cavity between the initial position and the target position.
According to the signal phase detection method of the dielectric phase shifter provided by the invention, the step of obtaining the corresponding signal phase of the dielectric plate at the target position further comprises the following steps:
obtaining the relation between voltage variation and signal phase variation between different positions of the dielectric slab and the metal cavity in advance through tests;
and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase of the dielectric plate at the initial position and the voltage difference between the metal cavity and the dielectric plate at the target position and the initial position.
The method for detecting the signal phase of the dielectric phase shifter provided by the invention further comprises the following steps: after the dielectric phase shifter is used for a preset time, the relationship between the voltage variation and the signal phase variation of the dielectric plate at different positions and between the dielectric plate and the metal cavity is obtained through a test again.
The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for detecting the phase of a signal from a dielectric phase shifter according to any one of the above methods when executing the program.
The invention also provides a dielectric phase shifter which comprises a metal cavity, a circuit board, a dielectric plate and a detection module, wherein the circuit board and the dielectric plate are arranged in the metal cavity, the circuit board is fixed on the metal cavity, the dielectric plate is connected with the metal cavity in a sliding mode, and the detection module is connected with the metal cavity and the circuit board through leads respectively and used for obtaining signal phases according to capacitance differences between the target position and the initial position of the dielectric plate and the metal cavity.
According to a dielectric phase shifter provided by the invention, the detection module comprises: the capacitor-to-voltage conversion module is respectively connected with the circuit board and the metal cavity through leads; the filter is respectively and electrically connected with the capacitor voltage conversion module and the operational amplifier.
According to the dielectric phase shifter provided by the invention, the capacitance-to-voltage module is connected to the circuit board through the positive lead, and the capacitance-to-voltage module is connected to the metal cavity through the negative lead.
The invention also provides an antenna comprising any one of the dielectric phase shifters.
According to the signal phase detection method of the dielectric phase shifter, the phase shifter and the antenna, the signal phase of the dielectric plate at the target position can be obtained in real time according to the signal phase of the dielectric plate at the initial position and the capacitance difference between the dielectric plate at the target position and between the initial position and the metal cavity.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic flow chart of a signal phase detection method for a dielectric phase shifter provided by the present invention;
FIG. 2 is a schematic diagram of a dielectric phase shifter according to the present invention;
FIG. 3 is a schematic diagram of an electronic device provided by the present invention;
reference numerals are as follows:
1: a metal cavity; 2: a circuit board; 3: a dielectric plate;
4: a positive electrode lead; 5: a negative electrode lead; 6: a field effect transistor;
7: a filter; 8: an operational amplifier.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A method for detecting a signal phase of a dielectric phase shifter, a dielectric phase shifter and an antenna according to the present invention are described with reference to fig. 1 to 3.
Fig. 1 is a schematic flow diagram of a signal phase detection method of a dielectric phase shifter provided by the present invention, and as shown in the figure, the signal phase detection method of the dielectric phase shifter includes a metal cavity, and a circuit board and a dielectric plate both disposed in the metal cavity, where the circuit board is fixed to the metal cavity, the dielectric plate is slidably connected to the metal cavity, and the signal phase detection method of the dielectric phase shifter includes: acquiring a corresponding signal phase of the dielectric plate at an initial position in advance; acquiring capacitance difference between the target position and the initial position of the dielectric plate and the metal cavity; and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase and the capacitance difference of the dielectric plate at the initial position.
There are two main approaches to phase shifters in the coverage area: PCB board moves looks ware and dielectric moves looks ware. The PCB phase shifter is low in price, low in precision, poor in stability and basically eliminated at present. The dielectric phase shifter has good stability and high precision, thus being widely applied to mobile communication base station antennas. However, the existing phase shifter is a passive device, the actual position of the phase shifter is not known, and the conventional method at present is to confirm a base point through an RCU device calibration instruction, but the base point is affected by multiple factors, so that the reference point cannot be found in practical use often, and even the reference point cannot be found and cannot be used due to abnormal calibration.
Based on the method, the phase shifter comprises a metal cavity, a dielectric plate and a circuit board are arranged in the metal cavity, a capacitor is arranged between the dielectric plate and the metal cavity, the dielectric plate can slide in the metal cavity, the capacitor between the dielectric plate and the metal cavity changes along with the movement of the dielectric plate, the circuit board is fixed in the metal cavity, and the capacitor between the dielectric plate and the metal cavity can be fed back in real time.
Specifically, a signal phase corresponding to the medium plate at the initial position is obtained in advance, that is, the signal phase corresponding to the medium plate at the initial position is detected. Acquiring the capacitance difference between the target position and the initial position of the dielectric plate and the metal cavity, and specifically comprising the following steps: acquiring a capacitance signal between the dielectric plate and the metal cavity at an initial position; acquiring a capacitance signal between the dielectric plate and the metal cavity when the dielectric plate is at the target position; and obtaining the capacitance difference between the target position and the initial position of the dielectric plate and the metal cavity according to the capacitance signal between the dielectric plate and the metal cavity at the initial position and the capacitance signal between the dielectric plate and the metal cavity at the target position. Further, a signal phase corresponding to the dielectric plate at the target position is obtained based on the signal phase corresponding to the dielectric plate at the initial position and the obtained capacitance difference.
The signal phase detection method of the dielectric phase shifter provided by the invention can obtain the signal phase of the dielectric plate at the target position according to the signal phase of the dielectric plate at the initial position and the capacitance difference between the dielectric plate at the target position and the metal cavity at the initial position.
On the basis of the foregoing embodiment, the method for detecting a signal phase of a dielectric phase shifter, wherein acquiring a corresponding signal phase of a dielectric slab at a target position specifically includes: acquiring voltage differences between the metal cavity and the dielectric plate at the target position and the initial position according to capacitance differences between the metal cavity and the dielectric plate at the target position and the initial position; and acquiring a corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase and the voltage difference of the dielectric plate at the initial position.
Specifically, the capacitance difference between the dielectric plate and the metal cavity at the target position and the initial position is converted into a voltage difference, and then the signal phase corresponding to the dielectric plate at the target position is obtained according to the signal phase and the voltage difference corresponding to the dielectric plate at the initial position.
Further, the corresponding signal phase of the dielectric plate at the target position is specifically obtained by the following formula:
θ1＝θ0+k×ΔV；
wherein, theta1Is the corresponding signal phase when the dielectric plate is at the target position; theta0Is the corresponding signal phase of the medium plate at the initial position; k is a constant; Δ V is the voltage difference between the dielectric plate and the metal cavity between the initial position and the target position.
In one embodiment, it is assumed that the dielectric phase shifter signal phase θ is when the dielectric slab is outside the metal cavity 0I.e. the phase of the signal of the dielectric plate at the initial position is theta0At the moment, the dielectric plate is inserted into any position of the metal cavity, and the phase of the signal of the dielectric phase shifter is theta1I.e. the phase difference between the target position and the initial position of the dielectric slab and the metal cavity is theta1-θ0I.e., Δ θ, and the capacitance change of the metal cavity at this time is Δ C, byThe changed capacitance value deltaC is converted into a voltage signal deltaV, so that a fixed relation is established between delta theta-deltaC-deltaV, and the phase theta of the signal of the dielectric phase shifter can be calculated by detecting delta V1I.e. theta1＝θ0+k×ΔV。
Based on the above embodiment, obtaining the corresponding signal phase of the dielectric slab at the target position further includes: obtaining the relation between voltage variation and signal phase variation between different positions of the dielectric slab and the metal cavity in advance through tests; specifically, according to the parameters of the dielectric phase shifter, the capacitance of the dielectric plate at different positions and the signal phase of the dielectric plate at different positions, the relationship between the voltage variation and the signal phase variation between the dielectric plate and the metal cavity is simulated through multiple tests.
Further, according to the corresponding signal phase of the dielectric plate at the initial position and the voltage difference between the dielectric plate at the target position and the initial position and the metal cavity, the corresponding signal phase of the dielectric plate at the target position, namely theta, is obtained 1＝θ0+k×ΔV。
Because different positions of the dielectric plate determine the signal phase of the dielectric phase shifter, different positions of the dielectric plate correspond to different capacitance values with the metal cavity, and different capacitance values correspond to different voltage values. Aiming at each dielectric phase shifter, the metal cavity, the circuit board and the dielectric plate are fixed, so that the relation between different positions of the dielectric plate and the signal phase of the dielectric phase shifter can be determined through an automatic test platform, and further the relation between the position of the dielectric plate and the capacitor is determined. That is, the relationship between the voltage variation and the signal phase variation between the dielectric plate and the metal cavity of different phase shifters is different, i.e., k is different.
Further, in the use process of the dielectric phase shifter, along with the aging of materials, the capacitance value of the metal cavity has certain changes, and the situation of inaccurate signal phase detection can occur in long-term use. Based on this, the method for detecting the phase of the signal of the dielectric phase shifter further comprises the following steps: after the dielectric phase shifter is used for a preset time, the relationship between the voltage variation and the signal phase variation of the dielectric plate at different positions and between the dielectric plate and the metal cavity is obtained through a test again. Specifically, the dielectric phase shifter is used for a period of time, an aging phenomenon occurs, the detected capacitance value and the capacitance value detected in the initial stage are different, and the relationship between the voltage variation between the dielectric plate and the metal cavity and the signal phase variation, namely the k value, is obtained through the automatic test platform again, so that the accuracy of the signal phase can be effectively improved. The preset time is set according to different medium phase shifters, and can be 6 months or 12 months, and the preset time is not specifically limited, so that the accuracy of signal phase detection of the medium phase shifter is ensured.
According to the detection method provided by the embodiment, after the dielectric phase shifter is used between presettings, the automatic test platform is used for carrying out online re-measurement again, the situation that the signal phase is inaccurate due to the deformation, displacement and the like caused by long-time use of the antenna is shielded, the continuity and accuracy of the coverage range of the electrically-adjustable antenna are ensured, so that each dielectric phase shifter can be used as an individual, the signal of each electrically-adjustable antenna is accurate, and meanwhile, the coverage effect of an infinite communication signal can be pre-warned.
The invention provides a signal phase detection method of a dielectric phase shifter, which comprises the steps of obtaining a corresponding signal phase of a dielectric plate at an initial position in advance; acquiring capacitance differences between the target position and the initial position of the dielectric plate and the metal cavity; and converting the capacitance difference into a voltage difference, and further acquiring a corresponding signal phase of the dielectric plate at the target position according to the voltage difference and the corresponding signal phase of the dielectric plate at the initial position. The signal phase detection method of the dielectric phase shifter can obtain the signal phase of the dielectric phase shifter without carrying out outdoor actual measurement, and abandons the traditional passive dielectric phase shifter mode, namely, an electric tuning antenna does not know whether the phase shifter is normal at all and can only be confirmed by carrying out outdoor wireless signal measurement with labor and labor, especially in outdoor complex occasions. In the assembling process of the antenna, most problems in the antenna can be discovered in time, the one-time passing rate of the antenna is improved, and the defective rate of the antenna is reduced. In the use of the antenna, the signal phase condition of the antenna can be detected in real time, so that the working state of the antenna is known, the reliability of the antenna is improved, and the later maintenance cost is reduced.
The invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the phase detection method of the medium phase shifter signal.
Fig. 3 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 3: a processor (processor)31, a communication Interface (Communications Interface)33, a memory (memory)32 and a communication bus 34, wherein the processor 31, the communication Interface 33 and the memory 31 complete communication with each other through the communication bus 34. Processor 31 may invoke logic instructions in memory 31 to perform a method of media phase shifter signal phase detection, the method comprising: acquiring a corresponding signal phase of a dielectric slab at an initial position in advance; acquiring capacitance differences between the target position and the initial position of the dielectric plate and the metal cavity; and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase and the capacitance difference of the dielectric plate at the initial position.
In addition, the logic instructions in the memory 31 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform a method for phase detection of a media phase shifter signal provided by the above methods, the method comprising: acquiring a corresponding signal phase of a dielectric slab at an initial position in advance; acquiring capacitance differences between the target position and the initial position of the dielectric plate and the metal cavity; and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase and the capacitance difference of the dielectric plate at the initial position.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of performing phase detection of a dielectric phase shifter signal as provided above, the method comprising: acquiring a corresponding signal phase of a dielectric slab at an initial position in advance; acquiring capacitance differences between the target position and the initial position of the dielectric plate and the metal cavity; and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase and the capacitance difference of the dielectric plate at the initial position.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
The invention also provides a dielectric phase shifter, which comprises a metal cavity 1, a circuit board 2, a dielectric plate 3 and a detection module, wherein the circuit board 2 and the dielectric plate 3 are both arranged in the metal cavity 1, the circuit board 2 is fixed on the metal cavity 1, the dielectric plate 3 is connected to the metal cavity 1 in a sliding manner, and the circuit board 2 can feed back capacitance signals between the metal cavity 1 and the dielectric plate 3 when the dielectric plate 3 is at different positions in real time; the detection module is respectively connected with the metal cavity 1 and the circuit board 2 through leads and is used for acquiring signal phases according to capacitance differences between the dielectric plate 3 and the metal cavity 1 at a target position and an initial position. Specifically, the detection module is respectively connected with the metal cavity 1 and the circuit board 2 through leads, so that the change of a capacitance signal fed back to the circuit board 2 can be detected in real time, and a signal phase can be obtained; when the dielectric plate 3 slides in the metal cavity 1, the capacitance between the metal cavity 1 and the dielectric plate 3 changes along with the sliding of the dielectric plate 3, and then the signal phase detected by the detection module is also different.
Wherein, the detection module includes: the circuit comprises a capacitor-to-voltage module, a filter 7 and an operational amplifier 8, wherein the capacitor-to-voltage module is respectively connected with a circuit board 2 and a metal cavity 1; the filter 7 is electrically connected to the capacitor-to-voltage module and the operational amplifier 8 respectively. The capacitance-to-voltage conversion module can be a field effect transistor 6(FET), and specifically, the FET is used for receiving capacitance change information of the metal cavity 1 and the circuit board 2 when the dielectric plate 3 moves and converting the capacitance change information into a weak voltage signal; the filter 7 is used for receiving the weak voltage signal output by the FET, extracting an effective frequency range signal, filtering an ineffective frequency range signal, and inputting the ineffective frequency range signal to the operational amplifier 8; the operational amplifier 8 is used for receiving the weak voltage signal input by the filter 7 and amplifying the weak voltage signal to a signal which can be normally identified.
Further, the FET is connected to the circuit board 2 by a positive lead 4, and the FET is connected to the metal cavity 1 by a negative lead 5. The circuit board 2 is fixed on the metal cavity1, a dielectric plate 3 is connected to the metal cavity 1 in a sliding manner, one end of an anode lead 4 is welded on the circuit board 2, and the other end of the anode lead is welded on the FET; one end of the cathode lead 5 is welded on the metal cavity 1, and the other end is welded on the FET; the FET can further receive a capacitance difference signal fed back by the circuit board 2 in real time and convert the capacitance difference signal into a weak voltage signal; the filter 7 is respectively electrically connected with the FET and the operational amplifier 8, the filter 7 can receive a weak voltage signal input by the FET, extract an effective frequency range signal and input the effective frequency range signal to the operational amplifier 8, and finally the operational amplifier 8 outputs a normally identified voltage signal according to a formula theta1＝θ0And + k × Δ V, the signal phase corresponding to the target position of the dielectric plate 3 is obtained.
The invention also provides an antenna comprising any one of the dielectric phase shifters. The antenna may be an electrically tunable antenna. Furthermore, the antenna also comprises a reflecting plate, the dielectric phase shifter can be arranged on the reflecting plate, and the detection module of the dielectric phase shifter can be fixed on the reflecting plate.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A signal phase detection method of a dielectric phase shifter is disclosed, wherein the dielectric phase shifter comprises a metal cavity, and a circuit board and a dielectric plate which are arranged in the metal cavity, the circuit board is fixed on the metal cavity, and the dielectric plate is connected with the metal cavity in a sliding manner, and the signal phase detection method of the dielectric phase shifter is characterized by comprising the following steps:
acquiring a corresponding signal phase of the dielectric plate at an initial position in advance;
acquiring capacitance difference between the target position and the initial position of the dielectric plate and the metal cavity;
acquiring a signal phase corresponding to the dielectric plate at the target position according to the signal phase corresponding to the dielectric plate at the initial position and the capacitance difference;
the acquiring of the corresponding signal phase of the dielectric slab at the target position specifically includes:
acquiring voltage differences between the metal cavity and the dielectric plate at the target position and the initial position according to capacitance differences between the metal cavity and the dielectric plate at the target position and the initial position;
and acquiring a signal phase corresponding to the dielectric plate at the target position according to the signal phase corresponding to the dielectric plate at the initial position and the voltage difference.
2. The method according to claim 1, wherein the corresponding signal phase of the dielectric plate at the target position is obtained by the following formula:
θ1＝θ0+k×ΔV；
Wherein, theta1Is the corresponding signal phase when the dielectric slab is at the target position; theta.theta.0Is the corresponding signal phase of the dielectric plate at the initial position; k is a constant; Δ V is the voltage difference between the dielectric plate and the metal cavity between the initial position and the target position.
3. The method for detecting the phase of the signal from the dielectric phase shifter according to claim 1, wherein obtaining the corresponding signal phase of the dielectric plate at the target position further comprises:
obtaining the relation between voltage variation and signal phase variation between different positions of the dielectric slab and the metal cavity in advance through tests;
and acquiring the corresponding signal phase of the dielectric plate at the target position according to the corresponding signal phase of the dielectric plate at the initial position and the voltage difference between the metal cavity and the dielectric plate at the target position and the initial position.
4. A method for phase detection of a dielectric phase shifter signal as recited in claim 3, further comprising: after the dielectric phase shifter is used for a preset time, the relationship between the voltage variation and the signal phase variation of the dielectric plate at different positions and between the dielectric plate and the metal cavity is obtained through a test again.
5. An electronic device comprising a memory, a processor and a computer program stored on said memory and executable on said processor, characterized in that said processor, when executing said program, carries out the steps of the method for phase detection of a dielectric phase shifter signal as claimed in any one of claims 1 to 4.
6. A dielectric phase shifter is characterized by comprising a metal cavity, a circuit board, a dielectric plate and a detection module, wherein the circuit board and the dielectric plate are arranged in the metal cavity, the circuit board is fixed on the metal cavity, the dielectric plate is connected to the metal cavity in a sliding mode, and the detection module is connected with the metal cavity and the circuit board through leads respectively and used for acquiring a signal phase according to capacitance difference between a target position and an initial position of the dielectric plate and the metal cavity;
the detection module comprises: the capacitor-to-voltage conversion module is respectively connected with the circuit board and the metal cavity through leads; the filter is respectively and electrically connected with the capacitor voltage conversion module and the operational amplifier.
7. The dielectric phase shifter of claim 6, wherein the capacitive-to-voltage module is connected to the circuit board by a positive lead and the capacitive-to-voltage module is connected to the metal cavity by a negative lead.
8. An antenna comprising a dielectric phase shifter as claimed in any one of claims 6 to 7.
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