Miniaturized short message four-arm helical antenna

Abstract

The application discloses a miniaturized short message four-arm helical antenna and belongs to the technical field of Internet of Things antennas. The miniaturized short message four-arm helical antenna comprises a twist frequency conversion shell, a four-arm helical antenna assembly, a mounting shell, an electromagnetic twist frequency conversion assembly, a signal optimization assembly and a driving circuit board. The four-arm helical antenna assembly is arranged at the top end of the electromagnetic twist frequency conversion assembly. The twist frequency conversion shell is internally provided with a mounting space. The twist frequency conversion shell is rotationally connected to the outer wall of the electromagnetic twist frequency conversion assembly. The four-arm helical antenna assembly is arranged in the mounting space. The signal optimization assembly is connected to the bottom end of the electromagnetic twist frequency conversion assembly. The bottom end of the signal optimization assembly is connected with the mounting shell. The driving circuit board is arranged in the mounting shell. The electromagnetic twist frequency conversion assembly, the signal optimization assembly and the driving circuit board are electrically connected. The application solves the problems of the prior art, such as the need for multiple sets of antenna coverage frequency bands, low integration and poor signal stability in complex scenes due to the fixed antenna radiation frequency band and the lack of a signal automatic optimization structure.

Description

Technical Field

[0001] This invention relates to the field of Internet of Things (IoT) antenna technology, specifically to a miniaturized short message quad-arm spiral antenna. Background Technology

[0002] In today's technological context, existing short message quad-helical antennas suffer from numerous technical shortcomings. To cover the needs of multi-band short message communication, they generally require multiple antenna elements, resulting in low overall structural integration and difficulty in adapting to the installation requirements of IoT terminals. Secondly, existing antennas are mostly fixed structures; the pitch, orientation, and radiation angle of the helical arms cannot be dynamically adjusted, making it impossible to optimize the radiation direction in real time according to the on-site signal environment and fully realize circular polarization performance. In complex scenarios with building obstructions, reception stability is poor, making it difficult to maintain a stable transmission signal, easily leading to packet loss and delays in short message transmission, resulting in insufficient communication reliability. Furthermore, they lack an integrated signal optimization and electromagnetic control structure, with the antenna body and feed / drive modules arranged separately, resulting in insufficient overall structural compactness.

[0003] Therefore, how to provide a miniaturized short message quad-helical antenna to overcome the shortcomings of existing quad-helical antennas is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address this issue, the present invention provides a miniaturized short message quad-arm helical antenna to solve the problems in the prior art, which are caused by the fixed antenna radiation frequency band and lack of automatic signal optimization structure, resulting in the need for multiple antennas to cover the frequency band, low integration, and poor signal stability in complex scenarios.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a miniaturized short message quad-arm helical antenna, comprising: The electromagnetic torsion frequency converter assembly has a four-arm spiral antenna assembly installed at the top. The torsion frequency converter housing has an internal installation space. The torsion frequency converter housing is rotatably connected to the outer wall of the electromagnetic torsion frequency converter assembly. The four-arm helical antenna assembly is disposed in the installation space. The entire torsion frequency converter housing is made of glass fiber reinforced plastic. A signal optimization component is connected to the bottom of the electromagnetic torsion frequency converter component, and a mounting housing is connected to the bottom of the signal optimization component. The drive circuit board is installed inside the mounting housing, and the electromagnetic torsion frequency converter is electrically connected to the signal optimization component and the drive circuit board.

[0006] In one possible implementation, the electromagnetic torsional frequency converter assembly includes: A mounting ring is installed at the bottom of the four-arm spiral antenna assembly, and several mounting plates are installed on the outer wall of the mounting ring. An arc-shaped electromagnet is mounted on the mounting plate, and the arc-shaped electromagnet is electrically connected to the drive circuit board; A magnetic isolation section is located above the arc-shaped electromagnet; The mounting block is attached to the bottom of the mounting plate.

[0007] In one possible implementation, the four-arm helical antenna assembly includes: A signal circuit board is disposed in the mounting space, and a power supply network module is mounted on the signal circuit board. A shielding layer is installed at the bottom of the signal circuit board, and the bottom of the shielding layer is connected to the electromagnetic torsion frequency converter assembly. The shielding layer is grounded. Four flexible helical antennas are provided, with their bottom ends rotatably connected to the signal circuit board. The upper part of the flexible helical antenna is slidably connected to the torsion frequency converter housing. The flexible helical antenna is made of highly elastic beryllium copper.

[0008] In one possible implementation, the torsional inverter housing includes: The inner cylinder is rotatably connected to the outer wall of the mounting ring, and several reinforcing ribs are installed on the outer wall of the inner cylinder; An outer cylinder is installed on the outside of the inner cylinder, and the inner wall of the outer cylinder is connected to the outer end of the reinforcing rib. Several arc-shaped permanent magnet blocks are installed on the inner wall of the bottom end of the outer cylinder, and one end of each arc-shaped permanent magnet block is connected to the core of the arc-shaped electromagnet. A torsion module is installed at the top of the inner cylinder, and the torsion module is slidably connected to the four-arm helical antenna assembly.

[0009] In one possible implementation, the torsion module includes: The outer ring is twisted and installed at the top of the reinforcing rib; A torsion inner ring is coaxially disposed within the torsion outer ring, and the torsion inner ring and the torsion outer ring form a torsion groove; A spiral short tube is rotatably connected to the torsion groove on both sides, and the inner wall of the spiral short tube is slidably connected to the antenna above the four-arm spiral antenna assembly.

[0010] In one possible implementation, the signal optimization component includes: Several electromagnetic lifting rods are rotatably connected at their top ends to the bottom of the mounting block, and the bottom ends of the electromagnetic lifting rods are rotatably connected to the top of the mounting housing.

[0011] In one possible implementation, the electromagnetic lifting rod includes: Universal joints are arranged in pairs and are rotatably connected to the bottom of the mounting block and the top of the mounting housing, respectively. An outer fixing cylinder is installed at the top of the universal joint below, and a through hole is provided on the outer wall of the outer fixing cylinder; A lifting electromagnet is installed inside the outer fixed cylinder; The limiting grooves are arranged in pairs and are formed on the inner wall of the outer fixed cylinder, with the limiting grooves located above the lifting electromagnet; A telescopic inner tube is installed at the bottom end of the universal joint mentioned above. The telescopic inner tube is slidably connected inside the outer fixed cylinder. A permanent magnet column is installed inside the telescopic inner tube. Limiting blocks, arranged in pairs, are installed on the outer wall of the telescopic inner tube, and the limiting blocks are slidably connected in the limiting groove.

[0012] In one possible implementation, a plurality of inverters are mounted at the bottom of the drive circuit board, and a drive control module is mounted inside the inverters.

[0013] In one possible implementation, the top of the mounting housing has a wiring hole.

[0014] This invention achieves multi-band frequency switching by synchronously twisting a four-arm spiral antenna assembly using an electromagnetic torsion frequency converter. An external torsion frequency converter housing is fitted, and a mounting housing connecting the signal optimization component and the built-in drive circuit board at the bottom forms an integrated structure for frequency conversion tuning and signal optimization. This eliminates the need for multiple antenna units to cover multi-band short message communication, adapting to the installation requirements of IoT terminals. The electromagnetic torsion frequency converter can dynamically adjust the radiation parameters of the spiral antenna, optimizing circular polarization performance in real time and effectively widening the operating frequency band. The signal optimization component can flexibly adjust the antenna's orientation, automatically finding the optimal signal angle based on the environment, ensuring stable transmission and reception even in complex obstructed scenarios, reducing packet loss and latency. The four-arm spiral antenna assembly and the electromagnetic torsion frequency converter assembly are not powered by the same circuit board to prevent electromagnetic interference. The torsion frequency converter housing is made of glass fiber reinforced plastic, combining excellent wave transmission and structural protection, ensuring reliable operation of the entire device and improving communication stability and scene adaptability. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 A three-dimensional view of a miniaturized short message quad-arm helical antenna provided by the present invention; Figure 2 A perspective view of the electromagnetic torsion frequency converter assembly provided by the present invention; Figure 3 A three-dimensional view of the magnetic isolation section provided by the present invention; Figure 4 A perspective view of the four-arm helical antenna assembly provided by the present invention; Figure 5 Provided by the present invention Figure 3 A magnified view of a section at point A in the middle; Figure 6 A perspective view of the shielding layer provided by the present invention; Figure 7 A perspective view of the through hole provided by the present invention; Figure 8 A perspective view of the lifting electromagnet provided for this invention; Figure 9 A perspective view of the inverter provided by the present invention.

[0018] In the diagram: 1. Torsional inverter housing; 11. Inner cylinder; 12. Reinforcing rib; 13. Outer cylinder; 14. Arc-shaped permanent magnet block; 15. Torsional module; 151. Torsional outer ring; 152. Torsional inner ring; 153. Torsional groove; 154. Spiral short tube; 2. Four-arm spiral antenna assembly; 21. Signal circuit board; 22. Shielding layer; 23. Feed network module; 24. Elastic spiral antenna; 3. Mounting housing; 31. Wiring hole; 4. Electromagnetic torsional inverter assembly; 41. Mounting ring; 42. Mounting plate; 43. Arc-shaped electromagnet; 44. Mounting block; 45. Magnetic isolation section; 5. Signal optimization assembly; 51. Electromagnetic lifting rod; 511. Universal joint; 512. Outer fixed cylinder; 513. Lifting electromagnet; 514. Limiting groove; 515. Telescopic inner tube; 516. Permanent magnet column; 517. Limiting block; 518. Through hole; 6. Drive circuit board; 61. Inverter; 62. Drive control module. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please refer to Figures 1-9 The present invention will now describe a miniaturized short message quad-arm helical antenna, as disclosed in this invention. Figure 1 , Figure 2 and Figure 4 The system includes a torsion frequency converter housing 1, a four-arm spiral antenna assembly 2, a mounting housing 3, an electromagnetic torsion frequency converter assembly 4, a signal optimization assembly 5, and a drive circuit board 6. The electromagnetic torsion frequency converter assembly 4 has a four-arm spiral antenna assembly 2 mounted on its top. The torsion frequency converter housing 1 has an internal mounting space and is rotatably connected to the outer wall of the electromagnetic torsion frequency converter assembly 4. The four-arm spiral antenna assembly 2 is located in the mounting space. The torsion frequency converter housing 1 is made entirely of glass fiber reinforced plastic. The signal optimization assembly 5 is connected to the bottom of the electromagnetic torsion frequency converter assembly 4, and the bottom of the signal optimization assembly 5 is connected to the mounting housing 3. The drive circuit board 6 is installed inside the mounting housing 3. The electromagnetic torsion frequency converter assembly 4 is electrically connected to the signal optimization assembly 5 and the drive circuit board 6. The torsion frequency converter housing 1 provides installation space for the quad-helical antenna assembly 2, and the mounting housing 3 is used to install the drive circuit board 6. The electromagnetic torsion frequency converter 4 can rotate the quad-helical antenna assembly 2 by driving the torsion frequency converter housing 1 to change its frequency band. The signal optimization component 5 is used to change the signal angle of the quad-helical antenna assembly 2 so that it can maintain the best transmission state. The drive circuit board 6 is used to drive the electromagnetic torsion frequency converter 4 and the signal optimization component 5 to operate. The quad-helical antenna assembly 2, the electromagnetic torsion frequency converter 4, and the signal optimization component 5 are not powered by the same circuit board and are powered independently of each other. The purpose is to prevent signal interference and avoid electromagnetic crosstalk.

[0021] In use, the device is first installed onto the desired equipment or surface via the mounting housing 3. Then, it is connected to a communication terminal for power supply and signal processing, transmitting signals. The communication terminal continuously monitors the current signal transmission quality. When the communication terminal detects unstable transmission signals from the quad-helical antenna assembly 2, it commands the drive control module 62 to operate. The drive control module 62 then drives the signal optimization component 5. At this time, the lifting electromagnet 513 inside the electromagnetic lifting rod 51 is energized. Through an algorithm, the drive control module 62 drives each electromagnetic lifting rod 51 to adjust its height appropriately. Multiple electromagnetic lifting rods 51 are adjusted in tandem to raise the quad-helical antenna assembly... When component 2 is adjusted to the designated transmission angle, the drive control module 62 energizes each lifting electromagnet 513, causing it to generate a magnetic force opposite in polarity to the permanent magnet cylinder 516. This repulsive force pushes the permanent magnet cylinder 516 to slide, which in turn pushes the telescopic inner tube 515 upwards. Utilizing the cooperation of the universal joint 511, and by supplying different currents to each lifting electromagnet 513, the telescopic inner tube 515 rises to different heights, achieving angle adjustment of the quad-arm spiral antenna assembly 2. This drives the entire quad-arm spiral antenna assembly 2 to precisely align with the satellite direction in three-dimensional space, maintaining optimal communication performance without manual intervention. When optimization is canceled, the drive control module 62 de-energizes the lifting electromagnet 513, causing it to lose its magnetism. The permanent magnet cylinder 516 then re-attracts the iron core of the lifting electromagnet 513, causing the telescopic inner tube 515 to descend and reset.

[0022] When the transmission frequency of the four-armed spiral antenna assembly 2 needs to be changed, a command is sent to the drive control module 62 via the communication terminal to energize the arc electromagnet 43. The arc electromagnet 43 generates a magnetic force with opposite polarity to the arc permanent magnet block 14. At this time, the arc electromagnet 43 pushes the torsional frequency converter housing 1 to rotate by repulsing the arc permanent magnet block 14. Simultaneously, an arc electromagnet 43 adjacent to the arc electromagnet 43 begins to attract the arc permanent magnet block 14 pushed by the repulsive force. At this time, the spiral short tube 154 of the torsional module 15 begins to rotate synchronously. The spiral short tube 154 synchronously torsions all the elastic spiral antennas 24. Since the bottom end of the elastic spiral antenna 24 is fixedly rotatably connected to the signal circuit board 21, the bottom end will not rotate with it. Therefore, the elastic spiral antenna... When the four elastic spiral antennas 24 are twisted, their pitch and overall length will decrease synchronously, resulting in a decrease in their spiral angle and a shortening of the effective radiation length of the antenna arm. The shortening of the effective length of the four elastic spiral antennas 24 will force the antenna's resonant frequency to increase, thereby covering higher frequency communication signals. Then, as the arc electromagnet 43 continues to push the arc permanent magnet block 14, one end of the arc permanent magnet block 14 and another arc electromagnet 43 adjacent to the arc electromagnet 43 are connected and fixed by magnetic force. Then, the drive control module 62 de-energizes the arc electromagnet 43, and the magnetism of the arc electromagnet 43 disappears. At this time, the arc permanent magnet block 14 magnetically attracts the iron core of the other arc electromagnet 43 that was reconnected when it was energized, and overcomes the elastic deformation force of the elastic spiral antenna 24 to maintain the twisted state. When the quad-arm helical antenna assembly 2 needs to return to its original transmission frequency band, a command can be sent to the drive control module 62 via the communication terminal. This causes the drive control module 62 to switch the power supply polarity via the inverter 61, supplying a reverse current to the arc electromagnet 43. Since this current is opposite in direction to the previous current, the arc electromagnet 43 will generate a polarity opposite to the previous current, thus driving the arc permanent magnet block 14 to rotate in the opposite direction. This, in turn, causes the torsional inverter housing 1 to rotate in the opposite direction, causing the torsional module 15 to synchronously torsion and reset all the elastic helical antennas 24 in the opposite direction. Under the restoring force of its own highly elastic beryllium copper material, the elastic helical antennas 24 gradually rebound, increasing the helix angle and thus the effective radiation length. According to the resonance principle, the increase in effective length will lead to a decrease in resonant frequency, thereby matching the signal transmission and reception requirements of the low-frequency band. During this process, the communication terminal can control the power supply network module 23 to dynamically adjust the impedance matching to ensure signal transmission efficiency. The magnetic isolation section 45 is used to block the magnetic field of the arc-shaped permanent magnet block 14 and the arc-shaped electromagnet 43 to avoid interfering with the signal transmission of the upper quad-helical antenna assembly 2. The shielding layer 22 can further improve the shielding effect.

[0023] In a specific embodiment, such as Figures 2-3The electromagnetic torsion frequency converter assembly 4 includes a mounting ring 41, a mounting plate 42, an arc electromagnet 43, a mounting block 44, and a magnetic isolation section 45. The mounting ring 41 is installed at the bottom of the quadruple spiral antenna assembly 2. Several mounting plates 42 are installed on the outer wall of the mounting ring 41. The arc electromagnet 43 is installed on the mounting plate 42 and is electrically connected to the drive circuit board 6. The magnetic isolation section 45 is located above the arc electromagnet 43. The mounting block 44 is connected to the bottom of the mounting plate 42. The mounting ring 41 provides bottom mounting support for the quad-helical antenna assembly 2 and also serves as a rotating mounting base for the torsional frequency converter housing 1, ensuring the coaxiality of both. The mounting plate 42 provides a fixed mounting point for the arc electromagnet 43. The arc electromagnet 43, as the power core of frequency conversion adjustment, generates magnetic fields of different polarities by switching on and off power and switching current directions. It works with the arc permanent magnet block 14 to generate repulsive or attractive forces, driving the torsional frequency converter housing 1 to complete circumferential rotation. The electromagnetic drive method eliminates mechanical contact, resulting in fast adjustment response. After power failure, it can maintain its current state by relying on the iron core of the arc electromagnet 43 and the magnetic attraction of the arc permanent magnet block 14, eliminating the need for continuous power supply and reducing standby power consumption. The magnetic isolation section 45 effectively shields the magnetic field generated by the arc electromagnet 43 and the arc permanent magnet block 14 below, preventing magnetic field interference with the radiation performance and signal transmission quality of the quad-helical antenna assembly 2 above, ensuring the signal stability of the quad-helical antenna assembly 2 during frequency conversion adjustment. The mounting block 44 is used to connect the electromagnetic torsional frequency converter assembly 4 to the signal optimization assembly 5 below.

[0024] In a specific embodiment, such as Figure 4The quad-helical antenna assembly 2 includes a signal circuit board 21, a shielding layer 22, a feed network module 23, and elastic helical antennas 24. The signal circuit board 21 is set in the installation space, and the feed network module 23 is installed on the signal circuit board 21. The shielding layer 22 is installed at the bottom of the signal circuit board 21 and is connected to the electromagnetic torsion frequency converter assembly 4 at the bottom. The shielding layer 22 is grounded. Four elastic helical antennas 24 are provided, with their bottom ends rotatably connected to the signal circuit board 21. The upper part of the elastic helical antennas 24 is slidably connected to the torsion frequency converter housing 1. The elastic helical antennas 24 are made of highly elastic beryllium copper. The signal circuit board 21 provides a mounting carrier for the transmission and distribution of radio frequency signals. The shielding layer 22 is made of conductive metal and is grounded, which can shield the electromagnetic interference generated by the electromagnetic torsion frequency converter component 4 below, prevent clutter coupling into the antenna radio frequency path, and ensure the purity of antenna radiation and signal quality. At the same time, it forms a double shielding structure with the magnetic isolation section 45, further improving the anti-interference capability. The feed network module 23 provides equal amplitude feed signals with a phase difference of 90° between each of the four elastic spiral antennas 24, ensuring that the elastic spiral antennas 24 generate stable circularly polarized radiation signals. Simultaneously, the impedance matching parameters can be dynamically adjusted during frequency conversion, ensuring that the elastic helical antenna 24 maintains the optimal standing wave ratio at different resonant frequencies, thereby improving signal transmission efficiency. The elastic helical antenna 24 is the main radiating element, with four helical arms working together to form a wide-beam circularly polarized radiation characteristic, which is suitable for the transmission requirements of short message satellite communication. The highly elastic beryllium copper material has both excellent conductivity and elastic deformation capability. When twisted, the resonant frequency can be changed by the change of pitch and effective length, realizing dynamic frequency band adjustment. Moreover, after the external force is removed, it can accurately reset by its own elasticity, ensuring the repeatability and reliability of frequency adjustment.

[0025] In a specific embodiment, such as Figures 2-3The torsion inverter housing 1 includes an inner cylinder 11, reinforcing ribs 12, an outer cylinder 13, arc-shaped permanent magnet blocks 14, and a torsion module 15. The inner cylinder 11 is rotatably connected to the outer wall of the mounting ring 41. Several reinforcing ribs 12 are installed on the outer wall of the inner cylinder 11. The outer cylinder 13 is installed on the outside of the inner cylinder 11, and the inner wall of the outer cylinder 13 is connected to the outer end of the reinforcing ribs 12. Several arc-shaped permanent magnet blocks 14 are installed on the inner wall of the bottom end of the outer cylinder 13. One end of the arc-shaped permanent magnet block 14 is attracted and engaged with the iron core end face of the arc-shaped electromagnet 43. The torsion module 15 is installed on the top of the inner cylinder 11 and is slidably connected to the four-arm helical antenna assembly 2. The inner cylinder 11 provides a rotational support base for the entire torsional frequency converter housing 1 and is rotatably connected to the mounting ring 41. The reinforcing rib 12 reduces the overall weight while improving structural rigidity and resistance to deformation, and reduces motion inertia. The outer cylinder 13 provides waterproof, dustproof, and impact-resistant physical protection for the internal four-arm spiral antenna assembly 2. The arc-shaped permanent magnet block 14, as a driven component driven by magnetic force, works with the arc-shaped electromagnet 43 to achieve transmission. It drives the torsional frequency converter housing 1 to rotate through electromagnetic repulsion and achieves rotational positioning through electromagnetic attraction. After power failure, it can rely on its own magnetic force to adhere to the iron core of the arc-shaped electromagnet 43 to maintain the current torsional state without continuous power supply. When the torsional module 15 rotates synchronously with the whole, it can drive the upper part of the four elastic spiral antennas 24 to rotate synchronously in the circumferential direction, converting the rotational motion of the torsional frequency converter housing 1 into changes in the pitch and effective length of the elastic spiral antennas 24, thereby adjusting the antenna resonant frequency.

[0026] In a specific embodiment, such as Figures 4-5 The torsion module 15 includes a torsion outer ring 151, a torsion inner ring 152, a torsion groove 153, and a helical short tube 154. The torsion outer ring 151 is installed on the top of the reinforcing rib 12. The torsion inner ring 152 is coaxially arranged inside the torsion outer ring 151. The torsion inner ring 152 and the torsion outer ring 151 form the torsion groove 153. The two sides of the helical short tube 154 are rotatably connected in the torsion groove 153. The inner wall of the helical short tube 154 is slidably connected to the antenna above the four-arm helical antenna assembly 2. The outer torsion ring 151 and the inner torsion ring 152 together form the mounting carrier of the torsion groove 153, ensuring the accuracy of the movement trajectory of the spiral short tube 154. The torsion groove 153 provides circumferential limit for the spiral short tube 154, allowing the spiral short tube 154 to rotate circumferentially with the overall shell and also generate its own longitudinal rotation, adapting to the axial length change of the elastic spiral antenna 24 during torsion, and avoiding jamming during the torsion process of the elastic spiral antenna 24. The spiral short tube 154 and the spiral arm of the elastic spiral antenna 24 slide together, and when rotating, it can drive the upper part of the elastic spiral antenna 24 to rotate synchronously circumferentially, while allowing the antenna arm to slide along the axial direction of the spiral short tube 154, compensating for the length change of the elastic spiral antenna 24 during torsion, ensuring smooth pitch adjustment without jamming, and making the frequency adjustment process of the antenna stable and continuous.

[0027] In a specific embodiment, such as Figure 1The signal optimization component 5 includes electromagnetic lifting rods 51, with the top ends of several electromagnetic lifting rods 51 rotatably connected to the bottom of the mounting block 44. The bottom ends of the electromagnetic lifting rods 51 are rotatably connected to the top of the mounting housing 3. Multiple electromagnetic lifting rods 51 work together to form a multi-degree-of-freedom parallel adjustment structure. By combining different extension and retraction amounts of each electromagnetic lifting rod 51, the attitude adjustment of the four-arm helical antenna component 2 in multiple directions can be achieved, realizing automatic signal optimization and improving communication stability in complex obstruction scenarios.

[0028] In a specific embodiment, such as Figures 7-8 The electromagnetic lifting rod 51 includes a universal joint 511, an outer fixing cylinder 512, a lifting electromagnet 513, a limiting groove 514, a telescopic inner tube 515, a permanent magnet column 516, a limiting block 517, and a through hole 518. The universal joints 511 are arranged in pairs and are rotatably connected to the bottom of the mounting block 44 and the top of the mounting housing 3, respectively. The outer fixing cylinder 512 is installed on the top of the lower universal joint 511, and a through hole 518 is provided on the outer wall of the outer fixing cylinder 512. The lifting electromagnet 513 is installed on the outer... Inside the fixed cylinder 512, a pair of limiting grooves 514 are set on the inner wall of the outer fixed cylinder 512. The limiting grooves 514 are set above the lifting electromagnet 513. The telescopic inner tube 515 is installed at the bottom end of the upper universal joint 511. The telescopic inner tube 515 is slidably connected inside the outer fixed cylinder 512. A permanent magnet column 516 is installed inside the telescopic inner tube 515. A pair of limiting blocks 517 are set on the outer wall of the telescopic inner tube 515. The limiting blocks 517 are slidably connected in the limiting grooves 514. Universal joint 511 can adapt to angle changes under different extension and retraction amounts through flexible hinge with the upper and lower connecting parts, ensuring no rigid interference in the transmission process and making the posture adjustment smooth and stable. The outer fixed cylinder 512 provides installation and protection space for the internal lifting electromagnet 513, and at the same time provides sliding guide for the telescopic inner tube 515. The lifting electromagnet 513 is the power core of the lifting adjustment. By changing the magnitude and direction of the current, it generates magnetic fields of different intensities and polarities, which cooperate with the permanent magnet column 516 to generate attraction or repulsion, driving the telescopic inner tube 515 to complete the lifting action. The electromagnetic direct drive method offers fast response and high adjustment precision, with no mechanical transmission gaps. The permanent magnet column 516 works in conjunction with the lifting electromagnet 513 to convert electromagnetic force into extension and retraction power. After power failure, it can rely on its own magnetic force to adhere to the iron core of the lifting electromagnet 513 and maintain a fixed state. The limiting groove 514 works in conjunction with the limiting block 517 to limit the lifting stroke of the telescopic inner tube 515, preventing excessive extension and retraction that could damage the structure. The through hole 518 is used to lay the power supply cable of the lifting electromagnet 513, achieving a neat layout of the line and avoiding cable interference with the lifting movement.

[0029] In a specific embodiment, such as Figure 9Several inverters 61 are mounted on the bottom of the drive circuit board 6, and a drive control module 62 is installed inside the inverters 61. The inverters 61 are used to switch the direction of the power supply current of the arc electromagnet 43, realize the rapid reversal of the polarity of the arc electromagnet 43, and then drive the torsion frequency converter housing 1 to complete the forward and reverse rotation, thereby realizing the frequency band adjustment of the four-arm spiral antenna assembly 2. The drive control module 62 is the control core of the entire device. It has built-in signal quality assessment algorithm and attitude control algorithm. It can receive signal quality data fed back by the communication terminal in real time, calculate the optimal antenna attitude, and send control commands to the signal optimization component 5 and the electromagnetic torsion frequency converter component 4 respectively, so as to realize the operation of automatic signal optimization and dynamic frequency band adjustment.

[0030] In a specific embodiment, such as Figure 6 The top of the housing 3 has a wiring hole 31 for threading cables to achieve electrical connection of the equipment.

[0031] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A miniaturized short message quad-arm helical antenna, characterized in that, include: The electromagnetic torsion frequency converter (4) has a four-arm spiral antenna assembly (2) installed on its top. The torsion frequency converter housing (1) has an installation space inside. The torsion frequency converter housing (1) is rotatably connected to the outer wall of the electromagnetic torsion frequency converter assembly (4). The four-arm spiral antenna assembly (2) is set in the installation space. The torsion frequency converter housing (1) is made of glass fiber reinforced plastic. The signal optimization component (5) is connected to the bottom of the electromagnetic torsion frequency converter (4), and the bottom of the signal optimization component (5) is connected to the mounting housing (3). The drive circuit board (6) is installed inside the mounting housing (3), and the electromagnetic torsion frequency converter (4) is electrically connected to the signal optimization component (5) and the drive circuit board (6).

2. The miniaturized short message quad-arm helical antenna as described in claim 1, characterized in that, The electromagnetic torsion frequency converter (4) includes: Mounting ring (41) is installed at the bottom of the four-arm helical antenna assembly (2), and several mounting plates (42) are installed on the outer wall of the mounting ring (41). An arc-shaped electromagnet (43) is mounted on the mounting plate (42) and is electrically connected to the drive circuit board (6); The magnetic isolation section (45) is located above the arc-shaped electromagnet (43); Mounting block (44) is attached to the bottom of mounting plate (42).

3. The miniaturized short message quad-arm helical antenna as described in claim 1, characterized in that, The four-arm helical antenna assembly (2) includes: A signal circuit board (21) is disposed in the mounting space, and a power supply network module (23) is mounted on the signal circuit board (21). A shielding layer (22) is installed at the bottom of the signal circuit board (21), and the bottom of the shielding layer (22) is connected to the electromagnetic torsion frequency converter assembly (4). The shielding layer (22) is grounded. Four elastic spiral antennas (24) are provided, with their bottom ends rotatably connected to the signal circuit board (21). The upper part of the elastic spiral antenna (24) is slidably connected to the torsion frequency conversion housing (1). The elastic spiral antenna (24) is made of highly elastic beryllium copper.

4. The miniaturized short message quad-arm helical antenna as described in claim 2, characterized in that, The torsional frequency converter housing (1) includes: The inner cylinder (11) is rotatably connected to the outer wall of the mounting ring (41), and a number of reinforcing ribs (12) are installed on the outer wall of the inner cylinder (11). The outer cylinder (13) is installed on the outside of the inner cylinder (11), and the inner wall of the outer cylinder (13) is connected to the outer end of the reinforcing rib (12); Several arc-shaped permanent magnet blocks (14) are installed on the inner wall of the bottom end of the outer cylinder (13), and one end of the arc-shaped permanent magnet block (14) is connected to the iron core of the arc-shaped electromagnet (43); A torsion module (15) is installed at the top of the inner cylinder (11), and the torsion module (15) is slidably connected to the quadruple spiral antenna assembly (2).

5. The miniaturized short message quad-arm helical antenna as described in claim 4, characterized in that, The torsion module (15) includes: The outer torsion ring (151) is installed at the top of the reinforcing rib (12); The inner torsion ring (152) is coaxially disposed within the outer torsion ring (151), and the inner torsion ring (152) and the outer torsion ring (151) form a torsion groove (153). The spiral short tube (154) is rotatably connected to the torsion groove (153) on both sides, and the inner wall of the spiral short tube (154) is slidably connected to the antenna above the four-arm spiral antenna assembly (2).

6. The miniaturized short message quad-arm helical antenna as described in claim 2, characterized in that, The signal optimization component (5) includes: Several electromagnetic lifting rods (51) are rotatably connected to the bottom of the mounting block (44) at their top ends, and the bottom ends of the electromagnetic lifting rods (51) are rotatably connected to the top of the mounting housing (3).

7. The miniaturized short message quad-arm helical antenna as described in claim 6, characterized in that, The electromagnetic lifting rod (51) includes: Universal joints (511) are arranged in pairs and are rotatably connected to the bottom of the mounting block (44) and the top of the mounting housing (3); An outer fixing cylinder (512) is installed on the top of the universal joint (511) below, and a through hole (518) is provided on the outer wall of the outer fixing cylinder (512). A lifting electromagnet (513) is installed inside the outer fixed cylinder (512); Limiting grooves (514) are arranged in pairs and are formed on the inner wall of the outer fixed cylinder (512). The limiting grooves (514) are located above the lifting electromagnet (513). The telescopic inner tube (515) is installed at the bottom end of the universal joint (511) mentioned above. The telescopic inner tube (515) is slidably connected inside the outer fixed cylinder (512). A permanent magnet column (516) is installed inside the telescopic inner tube (515). Limiting blocks (517) are installed in pairs on the outer wall of the telescopic inner tube (515), and the limiting blocks (517) are slidably connected in the limiting groove (514).

8. The miniaturized short message quad-arm helical antenna as described in claim 1, characterized in that, A plurality of inverters (61) are mounted on the bottom of the drive circuit board (6), and a drive control module (62) is mounted inside the inverters (61).

9. The miniaturized short message quad-arm helical antenna as described in claim 1, characterized in that, The mounting housing (3) has a wiring hole (31) at its top.

Images