Automatic tuning transmitting antenna and method for RS103 test

Abstract

The invention belongs to but not limited to the technical field of antennas, and particularly relates to an automatic tuning transmitting antenna and method for RS103 testing, and the antenna comprises an antenna array pipeline which enables a length-variable antenna array to stretch out and draw back in the pipeline; the tunable antenna array is made of soft and thin copper foil, can bear large current and is wound on a rotary column of the program control motor, and the length of the antenna array is adjusted through rotation of the program control motor; the optical fiber interface is connected with an optical fiber of a program control motor, and program control of the motor used by the antenna array is completed through program control software of the test system; the coaxial port is connected with an output power coaxial line of the radio frequency power amplifier, so that the output power of the radio frequency power amplifier is transmitted to the antenna array, and the antenna array generates required field intensity at a position of 1m; and the program control motor is used for controlling the lengths of the antenna arrays at different frequencies, controlling the rotation of the motor through the program control software of the test system, and adjusting the lengths of the arrays.

Description

Technical Field

[0001] The present invention belongs to but is not limited to the field of antenna technology, and in particular relates to an automatic tuning transmitting antenna and method for RS103 testing. Background Art

[0002] When conducting RS10310kHz~40GHz radiation sensitivity test according to GJB151B-2013 / GJB152-97, because the frequency range of this project is too wide, the test system of 10kHz~40GHz radiation sensitivity test is divided according to the transmitting antenna. Generally, it can be divided into 10kHz~30MHz, 30MHz~100MHz, 100MHz~1GHz, 1GHz~2.5GHz, 2.5GHz~6GHz, 6GHz~18GHz, 18GHz~26.5GHz, 26.5GHz~40GHz, covering a total of 8 transmitting antenna test subsystems. Among them, the transmitting antennas used in the 30MHz~100MHz radiation sensitivity test system are biconical antennas, electric field generators, composite antennas, etc. These antennas are large in size and have high standing waves. To generate high field strength, a power amplifier with high output power is required to drive it. Generally, a 3500W power amplifier is required to drive it. At the same time, the size of the test site is large.

[0003] In view of the above analysis, the technical problems that urgently need to be solved in the prior art are: the transmitting antennas used in the 30MHz~100MHz radiation sensitivity test system are biconical antennas, electric field generators, composite antennas, etc. These antennas are large in size and have high standing waves. To generate high field strength, they need to be driven by a power amplifier with higher output power. Generally, a 3500W power amplifier is required to drive them. At the same time, the size of the test site is large. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an automatic tuning transmitting antenna for RS103 testing.

[0005] The present invention is achieved in that an RS103 test automatic tuning transmitting antenna comprises:

[0006] Antenna array pipe: allows the antenna array with variable length to be extended and retracted in the pipe;

[0007] Tunable antenna array: Made of soft and thin copper foil, it can withstand large currents and is wrapped around the rotating column of the programmable motor. The length of the antenna array is adjusted by the rotation of the programmable motor.

[0008] Optical fiber interface: Connect the optical fiber of the program-controlled motor to complete the program control of the motor used by the antenna element through the program control software of the test system;

[0009] Coaxial port: connect the RF power amplifier output power coaxial line to transmit the output power of the RF power amplifier to the antenna array, and the antenna array generates the required field strength at 1m;

[0010] Programmable motor: controls the length of the antenna array at different frequencies. The motor rotation is controlled by the test system programmable software to adjust the length of the array.

[0011] Furthermore, the performance indicators of the antenna include:

[0012] 1) VSWR is 1.5:1;

[0013] 2) Withstand maximum power 2500W;

[0014] 3) The power required to generate 200V / m is less than 1500W;

[0015] 4) Antenna gain: 6.9~7.2dBi;

[0016] 5) Harmonic suppression greater than 25dBc.

[0017] The present invention also provides a tuning method for an automatic tuning transmitting antenna, comprising the following steps:

[0018] (a) Use the program control software to set the transmission frequency and send the frequency parameters to the program control motor through the optical fiber interface;

[0019] (b) The programmable motor automatically adjusts the length of the tunable antenna element according to the frequency parameters to ensure that the physical length of the antenna matches the transmission frequency and achieves the optimal resonance state;

[0020] (c) During the adjustment process, the length and tuning status of the antenna are monitored in real time to ensure that the antenna element can respond quickly to frequency changes;

[0021] (d) After the adjustment is completed, the required RF signal is output through the antenna, and the electric field strength and power parameters of each transmission are recorded.

[0022] The present invention also provides a method for adjusting an automatic tuning antenna array for RS103 testing, comprising the following steps:

[0023] (a) The antenna array is controlled to extend and retract in the pipeline by a programmable motor, so that the length of the antenna array can be adjusted according to different test frequencies;

[0024] (b) Use a copper foil antenna array to transmit signals, and automatically tune the physical length of the antenna through a program control system to ensure that the antenna is in a resonant state;

[0025] (c) The length of the antenna array is adjusted according to a preset frequency range to achieve frequency band coverage from 30 MHz to 1 GHz.

[0026] The present invention also provides a method for automatically adjusting antenna field strength, characterized in that it comprises the following steps:

[0027] (a) Connect the RF power amplifier to the coaxial port of the automatic tuning transmitting antenna;

[0028] (b) Use a programmable motor to automatically adjust the physical length of the antenna array according to the test frequency to ensure that the field strength of the transmitted signal reaches the specified 200V / m at 1 meter;

[0029] (c) The antenna length is adjusted in real time at different test frequencies to ensure that the field strength always meets the requirements of the RS103 standard, and the electric field strength of each adjustment is recorded through the test system.

[0030] The present invention also provides a signal transmission method of an automatic tuning antenna for electromagnetic compatibility testing, comprising the following steps:

[0031] (a) Connect the test system to the programmable motor of the antenna through the optical fiber interface and set the transmission frequency;

[0032] (b) After receiving the frequency command, the programmable motor automatically adjusts the length of the antenna array to match the optimal resonance state at different frequencies;

[0033] (c) Transmitting radio frequency power to the antenna array through the coaxial port and adjusting the output power of the power amplifier according to the field strength requirements to ensure that the required electric field strength is generated at 1 meter;

[0034] (d) Monitor the antenna’s gain, harmonic suppression, and VSWR, and adjust antenna parameters according to test requirements to ensure the accuracy and consistency of test results.

[0035] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0036] The present invention solves the problems that the existing transmitting antenna is large in size, has a high standing wave, and needs a power amplifier with higher output power to drive in order to generate a high field strength, generally requiring a 3500W power amplifier to drive, and the test site needs to be large in size.

[0037] The RS103 test automatic tuning transmitting antenna of the present invention solves multiple technical problems in the prior art in industrial applications and achieves significant technical progress in terms of test efficiency, accuracy, automatic adjustment and high-power operation.

[0038] 1. Existing technical problems solved

[0039] (1) Traditional manual tuning is inefficient

[0040] Existing antenna tuning systems usually require manual adjustment of the physical length of the antenna to adapt to different transmission frequencies. This manual operation is complex and time-consuming, especially in RS103 testing, where the antenna needs to be frequently adjusted to adapt to the test requirements of a wide frequency range (usually from 30MHz to 1GHz). Manual adjustment of the antenna is not only inefficient, but also prone to inaccurate test results due to operational errors.

[0041] (2) Insufficient frequency coverage

[0042] Traditional fixed antennas have limited tuning effects at different frequencies and cannot maintain a good resonant state over a wide frequency band, resulting in low transmission efficiency at certain frequencies. In addition, many antennas cannot meet the high field strength requirements of the RS103 test and are prone to detuning at high frequencies or high powers.

[0043] (3) Stability issues at high power

[0044] Under high-power transmission conditions, existing antenna designs are often difficult to maintain stability during continuous high-power operation due to material and structural limitations, and are prone to overheating or material aging problems, resulting in antenna damage or test failure.

[0045] 2. Significant technological progress

[0046] (1) Automated tuning to improve test efficiency

[0047] The present invention realizes the automatic tuning function of the antenna array through a programmable motor. The system can automatically adjust the physical length of the antenna according to the test frequency to ensure that the antenna can reach the optimal resonance state at different frequencies. This automatic tuning eliminates the cumbersome steps of manual operation and greatly improves the test efficiency, especially in an environment where the frequency is switched quickly, and realizes instant tuning and stable output.

[0048] (2) Efficient tuning over a wide frequency band

[0049] Through the automatic adjustment of the antenna array, the present invention can cover a wide frequency band from 30MHz to 1GHz. In this frequency band, the antenna has a good tuning effect and can generate sufficient electric field strength at different frequencies to meet the requirements of RS103 testing. Compared with traditional antennas, the automatic tuning design of the present invention solves the problem of insufficient frequency range coverage, improves the transmission efficiency, and enables the antenna to always maintain a high gain and a low VSWR in a wide frequency band.

[0050] (3) High power handling capability

[0051] The present invention uses soft and thin copper foil as the material of the tunable antenna array, which can withstand large currents and ensure stable operation under high power conditions. The maximum power bearing capacity of the antenna is up to 2500W, which can meet the requirements of the RS103 test to generate an electric field strength of up to 200V / m. This design significantly improves the stability and durability of the antenna in high-power operation and avoids the problems of overheating or material aging.

[0052] (4) Improved the accuracy of test results

[0053] The present invention realizes real-time and precise adjustment of the antenna length by connecting the programmable motor with the optical fiber interface, ensuring the perfect match between the transmission frequency and the antenna length at each frequency point, thereby improving the accuracy of field strength generation. The automated adjustment process eliminates human operation errors and ensures the consistency and reliability of the test results. At the same time, the VSWR of the antenna is within 1.5:1, ensuring low reflection loss and further improving the test accuracy.

[0054] (5) Enhanced harmonic suppression capability

[0055] The antenna designed by the present invention has a harmonic suppression capability greater than 25dBc, which can effectively reduce the interference of harmonics on the test results. This feature is particularly suitable for high-frequency electromagnetic compatibility testing, ensuring the signal purity of the test system and improving the accuracy of the test.

[0056] The RS103 test automatic tuning transmitting antenna of the present invention achieves significant technical progress in the field of electromagnetic compatibility testing by solving the deficiencies of conventional antennas in tuning efficiency, frequency coverage, high power stability and test accuracy. Its automatic tuning and high power tolerance make this technology widely applicable in RS103 testing in industries such as national defense, aerospace, and automotive electronics, greatly improving the efficiency and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic diagram of the structure of an automatic tuning transmitting antenna for RS103 testing provided by an embodiment of the present invention;

[0058] Among them: 1. Antenna array pipe; 2. Tunable antenna array; 3. Optical fiber interface; 4. Coaxial port; 5. Programmable motor. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0060] The tunable antenna system of the present invention constructs an efficient radiation transmitting antenna structure through the coordinated work of five main parts: antenna array pipe, tunable antenna array, optical fiber interface, coaxial port and programmable motor. First, the antenna array pipe is the basic structure of the whole system, which provides support and movement space for the tunable antenna array. The antenna array can be extended and retracted in the pipe to ensure that its length is adjusted with the change of frequency, so as to maintain the best radiation performance of the antenna.

[0061] The tunable antenna array is made of soft and thin copper foil with good conductivity and flexibility. It is the core radiation part of the antenna system. The antenna array is designed to rotate or extend around the rotating column of the programmable motor to change its physical length. As the programmable motor rotates, the length of the array can be accurately adjusted according to the requirements of different frequencies to ensure that the radiation efficiency of the antenna is maximized, especially when the frequency corresponds to 1 / 2 of the wavelength.

[0062] As a key connection part of the program control system, the optical fiber interface is responsible for transmitting the external control signal to the program control motor of the antenna array through the optical fiber. The optical fiber interface not only ensures the efficiency and stability of signal transmission, but also effectively prevents electromagnetic interference, so that the entire antenna tuning process remains reliable in a high-power working environment. By connecting to the program control software of the test system, the optical fiber interface realizes real-time and precise control of the program control motor.

[0063] The coaxial port is the key interface between the RF power amplifier and the antenna array. The RF power is transmitted to the antenna array through the coaxial port. This interface ensures that the high-frequency signal output by the amplifier can be stably and efficiently transmitted to the antenna array, so that it can generate the required electric field strength at a certain distance (usually 1 meter). The efficiency of RF power transmission is crucial to the overall working performance of the antenna.

[0064] The programmable motor is the core component responsible for adjusting the length of the antenna element. It achieves frequency tuning by rotating or retracting the antenna element. The action of the programmable motor is controlled by the test system software, and precise adjustment is achieved through the instructions transmitted through the optical fiber interface. This design ensures that the antenna can maintain the best working condition within different operating frequency ranges (30MHz to 100MHz).

[0065] Overall, the system achieves efficient automatic tuning through precise component connection and collaborative work, ensuring high radiation efficiency and stable output of the antenna at different frequencies. The reasonable configuration of the position and function of the various components of the antenna enables it to generate the required electric field strength in the RS103 test, while reducing the standing wave ratio and improving the working stability of the antenna.

[0066] According to the working principle of the antenna, when the antenna array size reaches 1 / 2 of the wavelength corresponding to the current frequency, the radiation efficiency of the antenna reaches the maximum. Therefore, for the 30MHz to 100MHz radiating transmitting antenna, in order to ensure the maximum radiation efficiency, the antenna size is relatively large, the standing wave is relatively high, and the required power amplifier power is relatively high. The radiating antenna of this scheme is a tunable folding antenna, such as Figure 1 shown.

[0067] Antenna array pipe: Allow the variable-length antenna array to be extended and retracted in the pipe to ensure that the shape of the antenna array meets the design requirements of the antenna shape, so as to achieve good radiation indicators;

[0068] Tunable antenna array: Made of a soft and thin copper foil that can withstand large currents, it is wrapped around the rotating column of the programmable motor so that the length of the antenna array can be adjusted by the rotation of the programmable motor;

[0069] Optical fiber interface: This interface is used to connect the optical fiber of the program-controlled motor so that the program-controlled software of the test system can complete the program control of the motor used by the antenna element;

[0070] Coaxial port: used to connect the RF power amplifier output power coaxial line so that the output power of the RF power amplifier can be transmitted to the antenna array, and the antenna array generates the required field strength at a certain distance (usually 1m);

[0071] Programmable motor: mainly used to control the length of the antenna array at different frequencies. The motor rotation is controlled by the test system programmable software to adjust the length of the array.

[0072] The performance indicators of the above antennas are as follows:

[0073] 1)VSWR (typical value) 1.5:1;

[0074] 2) Withstand maximum power 2500W;

[0075] 3) The power required to generate 200V / m (@1m) is less than 1500W;

[0076] 4) Antenna gain: 6.9~7.2dBi;

[0077] 5) Harmonic suppression greater than 25dBc;

[0078] The tunable foldable antenna of the present invention realizes its function through the coordinated work of five main parts: antenna array pipe, tunable antenna array, optical fiber interface, coaxial port and programmable motor. First, the antenna array pipe plays a role in supporting and protecting the antenna array. The antenna array can be freely extended and retracted in the pipe, and its length can be adjusted to meet the needs of different frequencies. This design ensures that the shape of the antenna can achieve the best radiation effect at different frequencies, improving the overall performance of the antenna.

[0079] The tunable antenna array is the core part of the antenna. It is made of soft and thin copper foil, which has strong conductivity and can withstand large currents. This copper foil structure is not only light, but also easy to change the length of the antenna array under the action of a programmable motor. By adjusting the length of the array, the antenna can match the current operating frequency to the greatest extent, thereby improving the radiation efficiency, especially in the case of half the wavelength of the operating frequency, the radiation efficiency of the antenna is maximized.

[0080] The optical fiber interface is used to connect the programmable motor and the test system to ensure that the antenna tuning process can be accurately controlled by the test system. The use of the optical fiber interface not only improves the transmission efficiency of the control signal, but also reduces electromagnetic interference, ensuring the stability of the system during high-power operation. Through the software control of the test system, the rotation of the motor can be adjusted in real time, thereby adjusting the length of the antenna element.

[0081] The coaxial port is connected to the RF power amplifier output power coaxial line, which is used to transmit the RF power of the amplifier to the antenna array. After the antenna array receives the power signal, it generates the required field strength at a distance of 1 meter. In order to ensure that the output power of the antenna meets the radiated emission standards, the coaxial port design ensures the efficiency and stability of power transmission.

[0082] The programmable motor is a key component of antenna tuning. It adjusts the antenna's operating frequency by controlling the length of the antenna array. Under the command of the test system's programmable software, the programmable motor automatically adjusts the length of the array according to the current frequency. Through precise control of the motor, the antenna can achieve optimal radiation efficiency within different operating frequency ranges (30MHz to 100MHz), thereby ensuring higher field strength output while reducing power consumption.

[0083] Finally, the performance indicators of the antenna ensure its stability and efficiency at different frequencies. Its VSWR value is 1.5:1, it can withstand a maximum power output of 2500W, the power required to generate 200V / m at a distance of 1 meter is less than 1500W, the antenna gain is 6.9~7.2dBi, and the harmonic suppression is greater than 25dBc. These performance indicators enable the antenna to maintain good performance output under high-power transmission and environmental interference such as clouds and noise, meeting the requirements of RS103 testing.

[0084] The detailed working principle of the RS103 test automatic tuning transmitting antenna can be divided into six key parts, covering from physical structure, signal transmission, automatic tuning, antenna array working principle to the control and performance of the entire system.

[0085] 1. Working principle of antenna array pipeline and tunable antenna array

[0086] The antenna array tube is the core structure of the RS103 test antenna. It is mainly used to accommodate the tunable antenna array and provide space for the antenna array to expand and contract. The antenna array is made of soft and thin copper foil, which is highly conductive and flexible and can be expanded and contracted along the length of the tube. Through this structural design, the physical length of the antenna can be precisely adjusted according to the requirements of the transmission frequency. Different frequencies require different antenna lengths to achieve the best resonant state. This adjustment is achieved by expanding and contracting the antenna array to ensure that the antenna maintains the best working state at different frequencies.

[0087] 2. Programmable motor and automatic tuning control

[0088] The programmable motor is responsible for driving the extension and retraction of the antenna array. The motor is connected to the programmable software of the test system and can adjust the physical length of the antenna in real time according to the set frequency. During the test, the motor adjusts the length of the antenna according to the test requirements to adapt to different transmission frequencies, thereby ensuring that the antenna can maintain a good tuning state within a wide frequency band. The precise control of the programmable motor can realize the automated tuning process, reduce the error and time of manual adjustment, and improve the test efficiency.

[0089] 3. Fiber optic interface and system control

[0090] The optical fiber interface connects the programmable motor and the test system, and is the communication bridge of the entire control system. The test system sends control instructions to the programmable motor through the optical fiber interface, thereby accurately controlling the length adjustment of the antenna array. The use of optical fiber communication avoids the influence of electromagnetic interference, ensures the stability and rapid response of signal transmission, and is especially suitable for high-precision test environments. Through the program control software, testers can monitor and adjust the tuning state of the antenna in real time to ensure that the frequency of each signal transmission matches the antenna length, thereby maximizing the field strength output.

[0091] 4. Coaxial port and RF power transmission

[0092] The coaxial port of the RS103 test antenna is used to connect the RF power amplifier and the RF signal transmission between the antenna array. The coaxial line transmits the amplified RF power through the coaxial port to ensure that the signal can be transmitted to the antenna array efficiently and with low loss. In this way, the RF signal can drive the antenna array to generate the required electric field strength. In a high-power test environment, the antenna needs to transmit a large current, and the copper foil antenna array is designed to withstand these high-power signals, ensuring its stable operation and achieving a field strength that meets the RS103 standard.

[0093] 5. Automatic tuning and frequency matching

[0094] The automatic tuning function of the antenna is achieved through real-time control of the programmable motor. During the test, when the test frequency changes, the physical length of the antenna element is automatically adjusted according to the instructions of the programmable software. The adjusted antenna length matches the transmission frequency, ensuring that the antenna is in a resonant state, thereby improving the transmission efficiency of the antenna. This automatic tuning process eliminates the complexity of manual adjustment, making the test process more efficient and ensuring that the optimal electric field strength is achieved at each frequency point.

[0095] 6. Performance indicators and field strength generation

[0096] The performance indicators of the RS103 test antenna determine its performance in actual tests. Through the adjustment of the tunable antenna array, the antenna can achieve a lower VSWR (1.5:1) and has a higher power handling capacity (up to 2500W). In the test of generating a field strength of 200V / m, the power required by the antenna is less than 1500W, showing high energy efficiency. At the same time, the gain of the antenna is 6.9~7.2dBi, ensuring that the transmitted signal can effectively cover the test area, and the harmonic suppression is greater than 25dBc, reducing the impact of harmonics on the test results. These performance indicators ensure that the antenna can meet the strict requirements of the RS103 standard and can maintain a stable working state in various complex test environments.

[0097] In summary, the RS103 test automatic tuning transmitting antenna can automatically tune and output stable high field strength at different frequencies through the telescopic design of the soft copper foil antenna array, automatic adjustment of the programmable motor, interference-free control of the optical fiber interface and efficient RF transmission of the coaxial port, which greatly improves the efficiency and accuracy of the RS103 test.

[0098] The following are two specific application examples of RS103 test automatic tuning transmitting antenna in the industry:

[0099] Example 1: Electromagnetic Compatibility (EMC) Testing for Defense and Aerospace

[0100] The RS103 standard is an important standard for evaluating the immunity of defense and aerospace equipment in electromagnetic environments. In this field, the equipment needs to withstand interference from strong electromagnetic fields and still operate normally in various electromagnetic environments. The RS103 test automatic tuning transmitting antenna is used in the following scenarios:

[0101] Test the anti-electromagnetic interference capability of military communication equipment, radar systems, flight control systems, etc.

[0102] By using an automatically tuned transmitting antenna, a high-intensity electromagnetic field can be emitted in a wide frequency band to simulate electromagnetic interference scenarios of different frequencies. The automatic tuning function can automatically adjust the length of the antenna according to different test frequencies to ensure the accuracy of the test field strength. During the test, testers can perform anti-interference tests on various military equipment to ensure that the equipment can still operate normally in extreme electromagnetic environments.

[0103] The antenna’s automatic tuning function significantly reduces manual adjustment time and improves test efficiency, while also improving operating stability at high power, ensuring the accuracy and consistency of test results.

[0104] Example 2: Electromagnetic compatibility (EMC) testing of automotive electronic equipment

[0105] Modern automotive electronic equipment (such as autonomous driving systems, smart sensors, entertainment systems, etc.) operates in a complex electromagnetic environment, and the RS103 standard is also applicable to evaluating the electromagnetic interference resistance of these devices. RS103 test automatic tuning transmitting antenna is widely used in EMC testing of automotive electronics:

[0106] Test the anti-electromagnetic interference performance of automobile control systems, vehicle communication systems and other sensitive electronic equipment.

[0107] In the test lab of the automobile manufacturer, the high-intensity electromagnetic field is emitted by the automatically tuned antenna to simulate the impact of electromagnetic interference in the external environment on the automobile electronic equipment. The automatic tuning function of the device can quickly adjust the physical length of the antenna according to the different test frequencies to ensure that the antenna can generate the required field strength at different frequencies. Automobile manufacturers can use this device to perform fast and accurate EMC testing to ensure that the electronic system can still work normally in a strong electromagnetic interference environment.

[0108] The antenna's automated design makes the entire test process more efficient and convenient, and is particularly suitable for electromagnetic compatibility testing with frequent frequency changes. At the same time, its high power handling capability ensures test reliability under high-power transmission conditions.

[0109] It can be seen from these two examples that the RS103 test automatic tuning transmitting antenna is widely used in the fields of national defense, aerospace, and automotive electronics. Its automatic tuning and efficient transmission functions ensure the evaluation of the anti-interference performance of the equipment in a complex electromagnetic environment.

[0110] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0111] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. An automatic tuning transmitting antenna for RS103 testing, characterized in that: include: Antenna array pipe: used to accommodate a tunable antenna array, which can be extended and retracted along the length direction of the pipe to adjust the physical length of the antenna; Tunable antenna array: Made of copper foil, it is wrapped around the rotating column of the programmable motor. The antenna array can be adjusted in length by rotating the programmable motor. Programmable motor: used to control the extension and retraction of the tunable antenna array. The length of the antenna array can be adjusted through programmable software to meet the needs of different frequencies. Optical fiber interface: connects the program-controlled motor and the test system, controls the program-controlled motor through the program-controlled software, and realizes automatic tuning of the antenna array; Coaxial port: used to connect the coaxial cable of the RF power amplifier to transmit the RF power output to the antenna array to generate the field strength required for the test.

2. The RS103 test automatic tuning transmitting antenna as claimed in claim 1, characterized in that: The tunable antenna element is made of soft and thin copper foil, which can withstand large current and ensure that the antenna works stably under high power conditions.

3. The RS103 test automatic tuning transmitting antenna as claimed in claim 1, characterized in that: The program-controlled motor is connected to the test system via an optical fiber interface, and the rotation of the motor is controlled in real time by the program-controlled software in the test system, so as to adjust the length of the antenna element to adapt to the signal transmission of different frequencies.

4. The RS103 test automatic tuning transmitting antenna as claimed in claim 1, characterized in that: The coaxial port is connected to the output port of the radio frequency power amplifier to ensure that the radio frequency power is transmitted from the power amplifier to the antenna array to generate the required electric field strength at 1 meter.

5. The RS103 test automatic tuning transmitting antenna as claimed in claim 1, characterized in that: The length of the antenna element can be automatically adjusted according to frequency changes during the test process by a programmable motor, thereby improving the tuning efficiency of the antenna and the accuracy of field strength generation.

6. The RS103 test automatic tuning transmitting antenna as claimed in claim 1, characterized in that: The performance indicators of the antenna include VSWR of 1.5:1, maximum power handling capacity of 2500W, power required to generate a field strength of 200V / m of less than 1500W, antenna gain of 6.9-7.2dBi, and harmonic suppression greater than 25dBc.

7. A method for tuning an automatic tuning transmitting antenna using the antenna of claim 1, characterized in that: The following steps are involved: (a) Use the program control software to set the transmission frequency and send the frequency parameters to the program control motor through the optical fiber interface; (b) The programmable motor automatically adjusts the length of the tunable antenna element according to the frequency parameters to ensure that the physical length of the antenna matches the transmission frequency and achieves the optimal resonance state; (c) During the adjustment process, the length and tuning status of the antenna are monitored in real time to ensure that the antenna element can respond quickly to frequency changes; (d) After the adjustment is completed, the required RF signal is output through the antenna, and the electric field strength and power parameters of each transmission are recorded.

8. A method for adjusting an automatic tuning antenna element for RS103 testing using the antenna of claim 1, characterized in that: The following steps are involved: (a) The antenna array is controlled to extend and retract in the pipeline by a programmable motor, so that the length of the antenna array can be adjusted according to different test frequencies; (b) Use a copper foil antenna array to transmit signals, and automatically tune the physical length of the antenna through a program control system to ensure that the antenna is in a resonant state; (c) The length of the antenna array is adjusted according to a preset frequency range to achieve frequency band coverage from 30 MHz to 1 GHz.

9. A method for automatically adjusting antenna field strength using the antenna of claim 1, characterized in that: The following steps are involved: (a) Connect the RF power amplifier to the coaxial port of the automatic tuning transmitting antenna; (b) Use a programmable motor to automatically adjust the physical length of the antenna array according to the test frequency to ensure that the field strength of the transmitted signal reaches the specified 200V / m at 1 meter; (c) The antenna length is adjusted in real time at different test frequencies to ensure that the field strength always meets the requirements of the RS103 standard, and the electric field strength of each adjustment is recorded through the test system.

10. A signal transmission method of an automatic tuning antenna for electromagnetic compatibility testing using the antenna of claim 1, characterized in that: The following steps are involved: (a) Connect the test system to the programmable motor of the antenna through the optical fiber interface and set the transmission frequency; (b) After receiving the frequency command, the programmable motor automatically adjusts the length of the antenna array to match the optimal resonance state at different frequencies; (c) Transmitting radio frequency power to the antenna array through the coaxial port and adjusting the output power of the power amplifier according to the field strength requirements to ensure that the required electric field strength is generated at 1 meter; (d) Monitor the antenna’s gain, harmonic suppression, and VSWR, and adjust antenna parameters according to test requirements to ensure the accuracy and consistency of test results.

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