A terminal antenna

Abstract

This invention provides a terminal antenna comprising a multi-band antenna and a shock-resistant spring base. The shock-resistant spring base is connected to the multi-band antenna, which includes a first radio frequency (RF) cable, a second RF cable, a first radiator, a second radiator, a first fixed support, a second fixed support, and other radiators. The first RF cable corresponds to a first frequency band, and the second RF cable corresponds to at least one frequency band, wherein the first frequency band is less than any of the at least one frequency band. The first and second RF cables pass through the first radiator. After passing through the first radiator, the second RF cable is wound into a first coil on the first fixed support and then passes through the second radiator. After passing through the second radiator, the second RF cable is wound into a second coil on the second fixed support. Using this design, the terminal antenna can achieve the characteristics of multi-band operation, high efficiency, and lightweight portability.

Description

Technical Field

[0001] This invention relates to the field of mobile communication antenna technology, and more particularly to a terminal antenna. Background Technology

[0002] With the development of modern communication technology, very high frequency (VHF), ultra-high frequency (UHF), and fifth-generation mobile communication technology (5G) have made great progress. As a result, portable terminal communication devices have become increasingly integrated and use more and more frequency bands in order to improve anti-interference and meet the needs of multi-tasking scenarios.

[0003] Currently, portable terminal communication devices require reserved antenna interfaces for different frequency bands, which significantly restricts their development towards miniaturization, portability, and integration. Therefore, to improve the integration and anti-interference capabilities of portable terminal communication devices, VHF / UHF / 5G terminal antennas urgently need to evolve towards multi-band, high-efficiency, and portable designs. However, while current terminal antennas can support multiple frequency bands, they cannot guarantee high operating efficiency across all bands, and their length and weight make them unsuitable for use in portable terminal communication devices. Summary of the Invention

[0004] This invention provides a terminal antenna that enables the terminal antenna to have the characteristics of multi-band operation, high efficiency, and lightweight portability.

[0005] In a first aspect, the present invention provides a terminal antenna, which includes a multi-band antenna and a shock-resistant spring mount;

[0006] The anti-vibration spring seat is connected to the multi-band antenna;

[0007] The multi-band antenna includes a first radio frequency cable, a second radio frequency cable, a first radiator, a second radiator, a first fixed support, a second fixed support, and other radiators;

[0008] The first radio frequency cable corresponds to a first frequency band, and the second radio frequency cable corresponds to at least one frequency band, wherein the first frequency band is less than any of the at least one frequency band; the first radiator, the second radiator, and the other radiators are arranged sequentially on a horizontal line, the first fixed support is located between the first radiator and the second radiator, and the second fixed support is located between the second radiator and the other radiators;

[0009] The first radio frequency cable and the second radio frequency cable pass through the first radiator; after passing through the first radiator, the second radio frequency cable is formed into a first winding coil on the first fixed support and passes through the second radiator; after passing through the second radiator, the second radio frequency cable is wound around the second fixed support to form a second winding coil.

[0010] With the above design, the first RF cable corresponds to the first frequency band, and the second RF cable corresponds to at least one frequency band. The first and second RF cables together constitute a multi-band antenna, thus enabling the terminal antenna to include multiple frequency bands. Furthermore, the first winding coil can reduce the impact of the second RF cable on the first frequency band antenna, and the second winding coil allows the first RF cable to reuse other radiators, improving the operating efficiency of the low-frequency bands in the first frequency band. This results in a terminal antenna with high efficiency, reliability, lightweight, and portability.

[0011] Optionally, the other radiators may include a plurality of radiators, the number of which is determined by the number of the at least one frequency band.

[0012] Optionally, both the first RF cable and the second RF cable are composed of a core wire, a dielectric layer, and a shielding layer from the inside out, and the first RF cable and the second RF cable are electrically connected.

[0013] Optionally, the multi-band antenna further includes a transmission line impedance transformer, which is soldered to the core wire of the first radio frequency cable and soldered to any one turn of the first wound coil.

[0014] Optionally, the multi-band antenna further includes a broadband impedance transformer located inside the other radiator and welded to the core wire of the second wound coil.

[0015] Optionally, the first frequency band is 200-1000MHz, and the at least one frequency band includes at least one of 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz.

[0016] Optionally, the first radiator and the second radiator are radiators of unequal length.

[0017] By adopting the above design, setting the first radiator and the second radiator as unequal length radiators, it can be ensured that both the low-frequency and high-frequency bands in the first frequency band can work efficiently.

[0018] Optionally, the terminal antenna further includes a terminal antenna cover and a terminal antenna cap; the terminal antenna cover encloses the multi-band antenna, and the terminal antenna cap is connected to the terminal antenna cover.

[0019] Optionally, the anti-vibration spring seat includes a frequency combiner, which performs combining processing on the antenna signals of the first radio frequency cable and the second radio frequency cable.

[0020] Optionally, the anti-vibration spring seat includes a third radio frequency cable, which is formed by winding and combining the first radio frequency cable and the second radio frequency cable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a terminal antenna structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the external structure of a terminal antenna provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of a terminal antenna provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of an anti-vibration spring seat for a terminal antenna provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the internal structure of a terminal antenna in the 200-1000MHz frequency band, provided for an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of a terminal antenna in the 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz frequency bands provided in an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] The application scenarios described in the embodiments of this invention are for the purpose of more clearly illustrating the technical solutions of the embodiments of this invention, and do not constitute a limitation on the technical solutions provided by the embodiments of this invention. Those skilled in the art will understand that with the emergence of new application scenarios, the technical solutions provided by the embodiments of this invention are also applicable to similar technical problems. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0029] Currently, existing multi-band terminal antennas are implemented by adopting multi-frequency vibrator design, multi-frequency matching design, loading technology, and multi-band lossless matching. However, these solutions have drawbacks such as being unsuitable for portable terminal communication devices, affecting the efficiency of the terminal antenna, and having limited ability to expand the frequency band of the terminal antenna.

[0030] Based on this, this application proposes a terminal antenna that can achieve the characteristics of multi-band, high efficiency, lightweight and portable.

[0031] For example, Figure 1 This is a schematic diagram of a terminal antenna structure proposed in this application, as shown below. Figure 1 As shown, the terminal antenna consists of a multi-band antenna 100 and a shock-resistant spring seat 200, with the multi-band antenna 100 connected to the shock-resistant spring seat 200. Specifically, the multi-band antenna 100 consists of a first radio frequency cable 110, a second radio frequency cable 120, a first radiator 130, a second radiator 140, a first fixed support 150, a second fixed support 160, and other radiators 170.

[0032] Exemplarily, a first radiator 130, a second radiator 140, and other radiators 170 are arranged sequentially on the same horizontal line. A first fixed support 150 is located between the first radiator 130 and the second radiator 140, and a second fixed support 160 is located between the second radiator 140 and the other radiators 170. A first radio frequency cable 110 and a second radio frequency cable 120 both pass through the first radiator 130. After passing through the first radiator 130, the second radio frequency cable 120 is formed into a first wound coil 180 on the first fixed support 150. After forming the first wound coil 180, the second radio frequency cable 120 passes through the second radiator 140 and is then formed into a second wound coil 190 on the second fixed support 160.

[0033] Exemplarily, both the first RF cable 110 and the second RF cable 120 are composed of a core wire, a dielectric layer, and a shielding layer from the inside out, and the first RF cable 110 and the second RF cable 120 are electrically connected. The first RF cable 110 corresponds to a first frequency band, and the second RF cable 120 corresponds to at least one frequency band, wherein the first frequency band is less than any of the at least one frequency band. Specifically, the first frequency band can be 200-1000MHz, and the at least one frequency band can be at least one of 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz. The first frequency band and the at least one frequency band can also be any other frequency band, and this application does not limit them.

[0034] For example, the first radiator 130 and the second radiator 140 are radiators of unequal length, and the other radiators 170 may be composed of multiple radiators, the specific number of which is determined by the number of at least one frequency band.

[0035] This application specifies the first frequency band as 200-1000MHz, and at least one frequency band as 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz. Among these, the 3300-3800MHz and 4400-5000MHz frequency bands are currently the mainstream communication frequency bands for 5G communication; therefore, the terminal antenna proposed in this application can be applied to 5G communication.

[0036] For example, a schematic diagram of the terminal antenna's external structure is shown below. Figure 2 As shown. The diameter of the terminal antenna is less than or equal to 16.5 mm, the height is less than or equal to 650 mm, and the weight is less than or equal to 300 g.

[0037] For example, Figure 3 This is a schematic diagram of the internal structure of a terminal antenna proposed in this application. Components 1-8 together constitute the shock-resistant spring mount 200 of the terminal antenna; components 9-32 together constitute the antenna structure for the 200-1000MHz frequency band; and components 21-32 together constitute the antenna structures for the 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz frequency bands. Therefore, Figure 3 The 9-32 in the array constitute a multi-band antenna 100.

[0038] Figure 4 This is a schematic diagram of the internal structure of the anti-vibration spring seat 200 of a terminal antenna proposed in this application, wherein 1 is the terminal antenna RF connector, 2 is the lower connector, 3 is the third RF cable, 4 is the anti-vibration spring, 5 is the upper connector, 6 is the sealing sleeve, 7 is the locking nut, and 8 is the frequency combiner circuit board.

[0039] For example, the lower connector 2, the anti-vibration spring 4, and the upper connector 5 are connected by a thermal expansion process to form the anti-vibration spring seat 200, ensuring a secure connection that will not rotate or detach. The lower connector 2 is threaded to the terminal antenna RF connector 1. Specifically, the anti-vibration spring 4 is made of specially processed deposited stainless steel wire, allowing it to bend at an angle ≥45°. For different application scenarios of the terminal antenna, the specific dimensions of the anti-vibration spring 4 can be determined experimentally, such as the diameter of the spring wire, the spring winding diameter, and the number of winding turns.

[0040] For example, the terminal antenna RF connector 1 is used to screw into the interface of a portable terminal communication device; one end of the third RF cable 3 is connected to the terminal antenna RF connector 1, and the other end passes through the sealing sleeve 6 and the locking nut 7 to connect to the frequency combiner circuit board 8; the locking nut 7 is screwed into the upper connector 5 by threads, thereby squeezing the sealing sleeve 6 to ensure no gaps and achieving the waterproof function of the shock-resistant spring seat 200. The frequency combiner circuit board 8 is used to combine the signals from the 200-1000MHz band antenna and the 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz band antennas, allowing the terminal antenna to operate simultaneously across multiple frequency bands. Specifically, the first RF cable 110 and the second RF cable 120 corresponding to the two frequency band antennas are wound in parallel, and the third RF cable 3 is obtained after the signals from the two frequency band antennas are combined.

[0041] For example, Figure 5 This is a schematic diagram of the internal structure of a terminal antenna in the 200-1000MHz frequency band proposed in this application. In the diagram, 9 represents two RF cables, 10 is a ferrite rod, 11 is a non-metallic component, 12 is a second RF cable (i.e., second RF cable 120), 13 is a first RF cable (i.e., first RF cable 110), 14 is a copper tube, 15 is a centrally located support structure, 16 is a transmission line impedance converter, 17 is a first wound coil (i.e., first wound coil 180), 18 is a first fixed support (i.e., first fixed support 150), 19 is a copper tube, and 20 is a centrally located support structure. Specifically, the two radio frequency cables 9 are formed by winding the first radio frequency cable 13 and the second radio frequency cable 12 together. The second radio frequency cable 12 is a radio frequency cable corresponding to the frequency bands of 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz. The first radio frequency cable 13 is a radio frequency cable corresponding to the frequency band of 200-1000MHz. The copper tube 14 is the lower radiator (i.e., the first radiator 130) of the 200-1000MHz frequency band. The central support structure 15 is the central support structure of the first radiator 14. The copper tube 19 is the upper radiator (i.e., the second radiator 140) of the 200-1000MHz frequency band. The central support structure 20 is the central support structure of the second radiator 19. The first fixed support 18 is located between the first radiator 14 and the second radiator 19.

[0042] For example, the two RF cables 9 can be wound around the ferrite rod 10 to form an inductive choke, thereby preventing the current on the first radiator 14 from coupling to the portable terminal communication device through the second RF cable 12 and the first RF cable 13. This prevents the antenna pattern in the 200-1000MHz frequency band from tilting upwards, ensuring maximum gain of the terminal antenna in the horizontal plane, and thus ensuring the reliability and stability of the terminal antenna. The ferrite rod 10 is nested inside the non-metallic component 11, and the wound coil on the ferrite rod 10 can be fixed in place by the non-metallic component 11. Specifically, the number of turns of the wound coil can be adjusted according to the frequency band corresponding to the two RF cables 9.

[0043] Exemplarily, the first radiator 14 and the second radiator 19 can realize the outward radiation and propagation of radio wave signals. The lengths of the first radiator 14 and the second radiator 19 are adjustable and can be adjusted to the optimal length according to the frequency band corresponding to the first radio frequency cable 13 used; this application does not limit the specific length. Specifically, the first radiator 14 and the second radiator 19 are copper tubes of unequal length, one long and one short. Since the short copper tube is suitable for the efficient operation of high-frequency antennas, and the long copper tube is suitable for the efficient operation of low-frequency antennas, efficient operation of the antenna across the entire frequency band of 200-1000MHz can be achieved.

[0044] Exemplarily, the first RF cable 13 and the second RF cable 12 pass through the first radiator 14. The shielding layers at one end of both the first RF cable 13 and the second RF cable 12 are soldered to the lower end of the first radiator 14. The shielding layer at the other end of the first RF cable 13 is soldered to the upper end of the first radiator 14, and the core wire at the other end of the first RF cable 13 is soldered to the transmission line impedance transformer 16. The other end of the second RF cable 12 is wound around the first fixed support 18 to form a first wound coil 17. The upper end of the first wound coil 17 is soldered to the second radiator 19 and the transmission line impedance transformer 16, and the lower end of the first wound coil 17 is soldered to the first radiator 14. The transmission line impedance transformer 16 can be soldered to any one turn of the first wound coil 17; this application does not limit this.

[0045] Since the core wire of the first RF cable 13 is soldered to the transmission line impedance transformer 16, and the first winding coil 17 formed by the second RF cable 12 is soldered to the transmission line impedance transformer 16, the second RF cable 12 and the first RF cable 13 can be electrically connected. Because the second RF cable 12 needs to pass through the first radiator 14 and the second radiator 19 (the RF cable 21 inside the second radiator 19 is essentially the second RF cable 12), the second RF cable 12 will have electromagnetic coupling with the first radiator 14 and the second radiator 19, which will affect the operation of the first RF cable 13 passing through the first radiator 14 through the electrical connection. Therefore, the second RF cable 12 needs to be wound into a first winding coil 17. The first winding coil 17 can reduce the impact of the electromagnetic coupling between the second RF cable 12 and the first radiator 14 and the second radiator 19 on the first RF cable 13. In addition, the first winding coil 17, in conjunction with the transmission line impedance converter 16, can broaden the bandwidth of the 200-1000MHz frequency band, reduce signal energy reflection, and achieve high-efficiency operation in the 200-1000MHz frequency band.

[0046] For example, Figure 6 This is a schematic diagram of the internal structure of a terminal antenna in the 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz frequency bands proposed in this application. In the diagram, 21 is the second RF cable, 22 is the second fixed support (i.e., second fixed support 160), 23 is the second winding coil (i.e., second winding coil 190), 24 is a copper tube, 25 is a broadband impedance transformer, 26 is a stripline, 27 is a central support structure, 28 is a copper tube, 29 is a stripline, 30 is a copper tube, 31 is a printed circuit board (PCB), and 32 is a stripline. The broadband impedance transformer 25 and striplines 26, 29, and 32 are located inside the PCB 31.

[0047] For example, copper tubes 24, 28, and 30 are all radiators, collectively forming other radiators 170. Specifically, the number of other radiators 170 is determined by the number of frequency bands corresponding to the second radio frequency cable 21. Since it consists of three frequency bands—1350-1710MHz, 3300-3800MHz, and 4400-5000MHz—the number of corresponding other radiators 170 is three. Generally, the more frequency bands, the more radiators. The number of radiators is also related to other factors, such as frequency band bandwidth.

[0048] For example, the second fixed support 22 is located between the second radiator 19 and the other radiators 170 composed of radiators 24, 28, and 30. After the second radio frequency cable 12 is wound into the first winding coil 17, the portion that enters the second radiator 19 after being soldered to the lower end of the second radiator 19 is the second radio frequency cable 21. The second radio frequency cable 21 passes through the second radiator 19 and is wound on the second fixed support 22 to form the second winding coil 23. Specifically, the shielding layer of the second winding coil 23 is soldered to the lower end of the radiator 24, and the core wire of the second winding coil 23 is soldered to one end of the broadband impedance transformer 25.

[0049] For example, the other end of the broadband impedance transformer 25 is connected to the stripline 26. The broadband impedance transformer 25 is located inside the radiator 24, forming a coaxial stripline structure with the radiator 24, used to broaden the antenna's frequency band, thereby enabling multi-band characteristics of the terminal antenna. Specifically, the broadband impedance transformer 25 can be a tapered broadband impedance transformer.

[0050] For example, the PCB circuit board 31 is nested inside the radiators 24, 28, and 30. The strip lines 26, 29, and 32 on the PCB circuit board 31 can be single-sided boards or double-sided boards with vias. This application does not limit the scope of the application.

[0051] For example, radiators 24, 28, and 30, along with stripline 32, together constitute a radiator in the 1350-1710MHz frequency band; radiators 24, 28, and 30 together constitute a radiator in the 3300-3800MHz frequency band; and radiator 28 constitutes a radiator in the 4400-5000MHz frequency band. Since stripline 32 is only beneficial to lower frequency bands, it is only used to constitute a radiator in the 1350-1710MHz frequency band.

[0052] For example, stripline 26 is located inside radiator 28. By adjusting the step width ratio of stripline 26, the stripline 26 can be coupled with radiator 28 to form a capacitor, thereby enabling operation in the 4400-5000MHz frequency band. Stripline 26 is connected to stripline 29, and stripline 29 is directly welded to radiator 30 to form a direct feeding structure, thereby enabling operation in the 3300-3800MHz frequency band. Stripline 32 and stripline 30 together form a capacitor loading structure, thereby enabling operation in the 1350-1710MHz frequency band.

[0053] For example, within a certain range, the longer the radiator length, the higher the operating efficiency in the low-frequency band; the shorter the radiator length, the higher the operating efficiency in the high-frequency band. The second winding coil 23 can form an inductively loaded connection for the antenna corresponding to the 200-1000MHz frequency band, thereby enabling inductive and capacitive coupling connections with the antennas corresponding to the 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz frequency bands. Thus, the antenna corresponding to the 200-1000MHz frequency band reuses the radiator 24, and further reuses the structures of radiators 28 and 30, striplines 26, 29, and 32 through capacitive coupling between the radiator 24 and the broadband impedance transformer 25. Since the second winding coil 23 can also block high-frequency signals in the 200-1000MHz frequency band while allowing low-frequency signals in the same band to pass through, it ensures that the operating efficiency of high-frequency signals in the 200-1000MHz frequency band is not degraded, while also improving the operating efficiency of low-frequency signals in the same band. The low-frequency band in the 200-1000MHz frequency band can be any frequency band not exceeding 500MHz, and this application does not impose any limitation. Furthermore, the second winding coil 23 can also prevent electromagnetic coupling between the radiator 24 and the radiator 19, thus avoiding any impact on the overall performance of the terminal antenna.

[0054] For example, the components of a terminal antenna proposed in this application also include a terminal antenna housing and a terminal antenna cap, wherein the terminal antenna housing covers the multi-band antenna 100, and the terminal antenna cap is connected to the terminal antenna housing. Figure 2 As shown, 33 is the terminal antenna cover, and 34 is the terminal antenna cap. The terminal antenna cover 33 can be bonded to the upper connector 5 in the anti-vibration spring seat 200 by epoxy resin adhesive.

[0055] For example, the terminal antenna cover 33 and the terminal antenna cap 34 can be made of non-metallic materials to waterproof and protect the internal structure. Depending on the application scenario and weather resistance requirements, fiberglass, nylon, POM or modified high-strength insulating materials can be used.

[0056] This application proposes a terminal antenna with a first frequency band of 200-1000MHz and at least one frequency band of 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz. Specifically, for the 200-1000MHz band, a dipole inductor-loaded multiplexed radiator is used. For the 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz bands, a composite vibrator design is used, resulting in a shorter and lighter terminal antenna. By using a wound coil, high-efficiency operation is ensured for each frequency band within the 200-1000MHz and 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz bands. By combining the antennas corresponding to these two frequency bands using a frequency combiner, simultaneous operation of multiple frequency bands by the terminal antenna is achieved. This will enable terminal antennas to have multi-band, high efficiency, and lightweight portability, promoting the development of portable terminal communication devices towards miniaturization and integration.

[0057] The division of units in the embodiments of this invention is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this invention can be integrated into a single processor, exist as separate physical units, or be integrated into a single unit. The integrated units described above can be implemented in hardware or as software functional units.

[0058] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0059] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A terminal antenna, characterized in that, The terminal antenna includes a multi-band antenna and a shock-resistant spring mount; The anti-vibration spring seat is connected to the multi-band antenna; The multi-band antenna includes a first radio frequency cable, a second radio frequency cable, a first radiator, a second radiator, a first fixed support, a second fixed support, other radiators, a stripline, and a broadband impedance converter. The first radio frequency cable corresponds to a first frequency band, and the second radio frequency cable corresponds to at least one frequency band, wherein the first frequency band is less than any of the at least one frequency band; the first radiator, the second radiator, and the other radiators are arranged sequentially on a horizontal line, the first fixed support is located between the first radiator and the second radiator, and the second fixed support is located between the second radiator and the other radiators; The first radio frequency cable and the second radio frequency cable pass through the first radiator; after passing through the first radiator, the second radio frequency cable is formed into a first winding coil on the first fixed support and passes through the second radiator; after passing through the second radiator, the second radio frequency cable is wound around the second fixed support to form a second winding coil. The number of other radiators is determined by the number of frequency bands corresponding to the second radio frequency cable; The multi-band antenna also includes a broadband impedance transformer, which is located inside the other radiators and is welded to the core wire of the second winding coil. The second winding coil enables the antenna corresponding to the first frequency band to form an inductive loading connection, thereby forming an inductive and capacitive coupling connection with the antenna corresponding to at least one frequency band of the second radio frequency cable. Thus, the antenna corresponding to the first frequency band reuses the third radiator adjacent to the second fixed support in the other radiators. The third radiator is capacitively coupled to the broadband impedance transformer, and reuses other radiators among the other radiators as well as the stripline.

2. The terminal antenna as described in claim 1, characterized in that, The other radiators include multiple radiators, the number of which is determined by the number of the at least one frequency band.

3. The terminal antenna as described in claim 1 or 2, characterized in that, Both the first RF cable and the second RF cable are composed of a core wire, a dielectric layer, and a shielding layer from the inside out, and the first RF cable and the second RF cable are electrically connected.

4. The terminal antenna as described in claim 3, characterized in that, The multi-band antenna further includes a transmission line impedance transformer, which is soldered to the core wire of the first radio frequency cable and soldered to any one turn of the first wound coil.

5. The terminal antenna as described in claim 1, characterized in that, The first frequency band is 200-1000MHz, and the at least one frequency band includes at least one of 1350-1710MHz, 3300-3800MHz, and 4400-5000MHz.

6. The terminal antenna as described in claim 1, characterized in that, The first radiator and the second radiator are radiators of unequal length.

7. The terminal antenna as described in claim 1, characterized in that, The terminal antenna also includes a terminal antenna cover and a terminal antenna cap; The terminal antenna cover encloses the multi-band antenna, and the terminal antenna cap is connected to the terminal antenna cover.

8. The terminal antenna as described in claim 1, characterized in that, The anti-vibration spring seat includes a frequency combiner, which performs combination processing on the antenna signals of the first radio frequency cable and the second radio frequency cable.

9. The terminal antenna as described in claim 1, characterized in that, The anti-vibration spring seat includes a third radio frequency cable, which is formed by winding and combining the first radio frequency cable and the second radio frequency cable.

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