Adjustable handheld terminal antenna integrating low orbit and Tiantong satellite communication

Abstract

The utility model provides an adjustable hand-held terminal antenna integrating low orbit and Tiantong satellite communication, which belongs to the technical field of communication equipment and comprises a feed base. The fixed radiator is connected with the feed base; the movable radiating body is movably connected with the fixed radiating body and is arranged opposite to the feed base; the fixed radiator is used for radiating in a Tiantong mode; a radiation structure formed by the fixed radiator and the movable radiator is used for radiation in a low-orbit mode. According to the utility model, the low-orbit satellite antenna and the Tiantong satellite antenna are integrated into a whole, so that the volume of the antenna on the terminal equipment which needs to work in the Tiantong mode and the low-orbit mode respectively is greatly reduced, and the antenna has profound significance for the research and development of the satellite antenna.

Description

Technical Field

[0001] The utility model belongs to the technical field of communication equipment, in particular to an adjustable handheld terminal antenna integrating low-orbit and sky-communication satellite communications. Background Art

[0002] Both low-orbit satellites and Tiantong satellites are used in satellite mobile communications. At present, the research on low-orbit satellite antennas and Tiantong satellite antennas in the industry has gradually matured, and has gradually developed in the direction of miniaturization, wide beam and multi-mode. For example, the patent document with application number CN202320541411.6 discloses a low-cost, high-gain four-arm spiral Tiantong satellite antenna. The patent document conformally places a four-in-one Wilkinson combiner network with a 90° phase difference of four-point feeding on the antenna body, which does not need to occupy the antenna bottom plate space. The antenna bottom plate size is limited, and the overall diameter of the antenna is limited, which reduces the volume of the antenna. See the patent document with application number CN201922486225.3, which discloses a low-orbit satellite with a flat structure. The patent document adopts a flat overall structural design, an integrated design of the onboard integrated electronic system, and a flexible and deployable solar wing, which greatly reduces the volume of the entire satellite, can adapt to the current mainstream launch vehicle fairing internal envelope requirements, and greatly improve the space utilization rate in the rocket fairing. From this, it can be seen that the miniaturization design of low-orbit satellite antennas and Tiantong satellite antennas is the mainstream trend for further development.

[0003] However, the current low-orbit satellite antennas and Tiantong satellite antennas work separately. If the terminal device needs to work in Tiantong mode and low-orbit mode respectively, it is necessary to install the low-orbit satellite antenna and Tiantong satellite antenna separately, resulting in a relatively large volume occupied by the antenna on the terminal device, making it impossible to miniaturize the antenna. Utility Model Content

[0004] If the terminal device described in the above background technology needs to work in the Tiantong mode and the low-orbit mode respectively, it is necessary to install the low-orbit satellite antenna and the Tiantong satellite antenna respectively, which results in the antenna on the terminal device occupying a relatively large volume and there is a technical problem that the antenna cannot be miniaturized. In view of this technical problem, the utility model proposes an adjustable handheld terminal antenna that integrates low-orbit and Tiantong satellite communications.

[0005] According to the characteristics that both the low-orbit satellite antenna and the Tiantong satellite antenna are left-hand circularly polarized radiation and the frequency difference is 500MHz, the utility model combines the ideas of shared radiator and frequency reconfigurability to carry out a "single-core dual-mode" design of the antenna, thereby forming an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, which greatly reduces the volume of the antenna on the terminal equipment that needs to work in the Tiantong mode and the low-orbit mode respectively, and has far-reaching significance for the research and development of satellite antennas.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An adjustable handheld terminal antenna integrating low-orbit and sky-communicating satellite communications, comprising:

[0008] Feeding base;

[0009] A fixed radiator is connected to the feeding base;

[0010] and a movable radiator, which is movably connected to the fixed radiator and arranged opposite to the feeding base;

[0011] The fixed radiator is used for radiating in the sky-through mode; the radiation structure formed by the fixed radiator and the movable radiator is used for radiating in the low-orbit mode.

[0012] It is further defined that the adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes an elastic conductive piece for connecting the fixed radiator and the movable radiator.

[0013] It is further defined that the fixed radiator comprises a first radiating arm, a second radiating arm and a fixed dielectric tube, the first radiating arm and the second radiating arm are both spirally wrapped around the outer wall of the fixed dielectric tube along the axial direction of the fixed dielectric tube, and the spiral angle of the first radiating arm is smaller than the spiral angle of the second radiating arm;

[0014] An end of the first radiation arm close to the movable radiator and an end of the second radiation arm close to the movable radiator are both connected to an elastic conductive member, and the first radiation arm and the second radiation arm are both connected to the movable radiator through the elastic conductive member;

[0015] The first radiation arm and the second radiation arm are both electrically connected to the feeding base, and the fixed medium tube is fixedly connected to the feeding base.

[0016] It is further defined that the movable radiator comprises a first extended radiating arm, a second extended radiating arm and a movable dielectric tube, the first extended radiating arm and the second extended radiating arm both spirally surround the outer wall of the movable dielectric tube along the axial direction of the movable dielectric tube, the spiral angle of the first extended radiating arm is greater than the spiral angle of the first radiating arm, and the spiral angle of the second extended radiating arm is greater than the spiral angle of the second radiating arm;

[0017] The first extended radiation arm is electrically connected to the first radiation arm through an elastic conductive member, and the second extended radiation arm is electrically connected to the second radiation arm through an elastic conductive member;

[0018] One end of the movable medium pipe extends into the fixed medium pipe and can be extended and retracted along the axial direction of the fixed medium pipe.

[0019] It is further defined that there are a plurality of the first radiation arm and the second radiation arm, the plurality of first radiation arms and the plurality of second radiation arms are all spirally wrapped around the outer wall of the fixed medium tube along the axial direction of the fixed medium tube, and the first radiation arm and the second radiation arm are arranged at intervals;

[0020] There are a plurality of the first extending radiation arms and the second extending radiation arms, and the plurality of the first extending radiation arms and the plurality of the second extending radiation arms are all spirally wound around the outer wall of the active medium tube along the axial direction of the active medium tube, and the first extending radiation arms and the second extending radiation arms are arranged at intervals;

[0021] The number of the elastic conductive members is equal to the sum of the number of the first radiation arms and the number of the second radiation arms.

[0022] It is further defined that the adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes an elastic conductive piece pressure sleeve, which is formed by extending a fixed dielectric tube toward one end close to the active radiator, and the elastic conductive piece is in contact and connected with the elastic conductive piece pressure sleeve.

[0023] It is further defined that a slot is provided on one side of the elastic conductive component pressing sleeve close to the movable medium tube, a solid limiting component is provided in the slot, and the movable medium tube is in contact and connected with the elastic conductive component pressing sleeve via the solid limiting component.

[0024] It is further defined that the adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes an outer cover, which is mounted on the outside of the feeding base, the outside of the fixed radiator and the outside of the movable radiator, one end of the feeding base extends to the outside of the outer cover for feeding; one end of the active medium tube in the active radiator extends to the outside of the outer cover for applying active force.

[0025] It is further defined that an annular groove is provided on one side of the outer cover close to the movable medium pipe, an elastic limiting member is provided in the annular groove, and the outer cover is in contact with and connected to the movable medium pipe via the elastic limiting member.

[0026] It is further defined that the adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes a pull-out rod and an end cap, the pull-out rod is connected to the movable medium tube, and the pull-out rod is arranged at an end away from the fixed medium tube; the end cap is connected to the pull-out rod, and the end cap is arranged at an end away from the movable medium tube.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The utility model is an adjustable handheld terminal antenna that integrates low-orbit and Tiantong satellite communications, which divides the radiation part into a fixed radiator and a movable radiator. The fixed radiator is used to radiate in the Tiantong mode; the radiation structure formed by the fixed radiator and the movable radiator is used to radiate in the low-orbit mode. According to the characteristics that both the low-orbit satellite antenna and the Tiantong satellite antenna are left-handed circularly polarized radiation with a frequency difference of 500MHz, the utility model combines the ideas of shared radiators and frequency reconfigurability to design the antenna as a "single-core dual-mode", integrates the low-orbit satellite antenna and the Tiantong satellite antenna into a whole, greatly reduces the volume of the antenna on the terminal equipment that needs to work in the Tiantong mode and the low-orbit mode respectively, has far-reaching significance for the research and development of satellite antennas, and has high practical value.

[0029] 2. The utility model connects the fixed radiator and the movable radiator through an elastic conductive member. By utilizing the elasticity of the elastic conductive member, not only can the fixed radiator and the movable radiator be stably conductive, but also the movable radiator can be easily separated from the fixed radiator, thereby realizing the switching between the two working modes.

[0030] 3. The utility model is also provided with an elastic conductive member pressing sleeve, and the provision of the elastic conductive member pressing sleeve facilitates the fixed connection between the elastic conductive member and the fixed medium pipe.

[0031] 4. The utility model is provided with a slot on the side of the elastic conductive member pressing sleeve close to the movable medium tube, and a solid limiting member is provided in the slot, and the movable medium tube is contacted and connected with the elastic conductive member pressing sleeve through the solid limiting member. The solid limiting member forms a movable gap between the movable medium tube and the elastic conductive member pressing sleeve, which, on the one hand, provides fixed support for the movable medium tube and the fixed medium tube, while avoiding direct contact between the movable medium tube and the fixed medium tube, and preventing deformation of the movable medium tube or the fixed medium tube; on the other hand, it also provides elastic deformation space for the elastic conductive member, protecting the elastic conductive member, and at the same time, the solid limiting member also guides the movable medium tube, preventing the center of gravity of the movable medium tube from shifting during the extension and retraction process.

[0032] 5. The utility model also includes an outer cover, which is sleeved on the outer side of the feeding base, the outer side of the fixed radiator and the outer side of the movable radiator to protect the feeding base, the fixed radiator and the movable radiator.

[0033] 6. The utility model is provided with an annular groove on one side of the outer cover close to the movable medium tube, and an elastic limiting member is provided in the annular groove. The outer cover is in contact and connection with the movable medium tube through the elastic limiting member, and the outer cover guides and limits the movable medium tube through the elastic limiting member to prevent the movable medium tube from randomly expanding and contracting in a free state and affecting the fixed radiator.

[0034] 7. The utility model also includes a pull rod and an end cap. The end cap is convenient for manual grasping when manually pulling and pulling. The pull rod is used to provide compensation for the expansion and contraction of the fixed medium pipe.

[0035] 8. The feeding base of the utility model adopts SMA single-core connector for feeding, which not only reduces the size and space of the antenna, but also saves the design cost compared with the double-core connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications of the utility model in the low-orbit working mode;

[0037] Figure 2 for Figure 1 A cross-sectional view along the central axis;

[0038] Figure 3 It is a schematic diagram of the structure of the adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications of the utility model in the Tiantong working mode;

[0039] Figure 4 for Figure 3 A cross-sectional view along the central axis;

[0040] Figure 5 This is a schematic diagram of the installation of the outer cover;

[0041] Figure 6 is a schematic diagram of the structure of the outer cover;

[0042] Figure 7 The schematic diagram of the structure of the elastic conductive member compression sleeve is shown in FIG. 1 , wherein the elastic conductive member compression sleeve is arranged on one end of the fixed medium pipe close to the movable medium pipe and is an integral part of the fixed medium pipe;

[0043] Figure 8 This is the standing wave ratio diagram in the low-orbit satellite communication frequency band;

[0044] Fig. 9 is the gain pattern in the low-orbit satellite communication frequency band, wherein (a) is the gain pattern in the low-orbit satellite communication frequency band at 1521 MHz, and (b) is the gain pattern in the low-orbit satellite communication frequency band at 1671 MHz;

[0045] Fig.10 This is the standing wave ratio diagram in the Tiantong satellite communication frequency band;

[0046] Fig.11 is the gain pattern in the Tiantong satellite communication frequency band, where (a) is the gain pattern in the low-orbit satellite communication frequency band at 1995 MHz, and (b) is the gain pattern in the low-orbit satellite communication frequency band at 2185 MHz;

[0047] Among them, 101-pull rod, 102-first extended radiating arm, 103-second extended radiating arm, 104-movable dielectric tube, 105-end cap, 201-elastic conductive part, 202-first radiating arm, 203-second radiating arm, 204-fixed dielectric tube, 205-solid limiting part, 206-card slot, 301-phase shifter, 302-PCB pad, 303-SMA single-core cable connector, 304-SMA single-core cable, 401-outer cover, 4011-annular groove, 402-elastic limiting part. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the implementation methods described below.

[0049] See also Figure 1 , Figure 3 and Figure 5 The utility model discloses an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, which comprises a feeding base, a fixed radiator and a movable radiator, wherein the feeding base, the fixed radiator and the movable radiator are arranged in sequence from bottom to top along the radiation direction.

[0050] The fixed radiator is connected to the feeding base. Specifically, on one hand, the fixed radiator is electrically connected to the feeding base, and power is fed to the fixed radiator through the feeding base. On the other hand, the fixed radiator is fixedly connected to the feeding base to provide fixed support for the fixed radiator.

[0051] The movable radiator is movably connected to the fixed radiator and is arranged opposite to the feeding base. Specifically, the movable radiator can be extended and retracted along the fixed radiator to adjust the radiation length of the antenna and then adjust the working mode of the antenna.

[0052] Among them, the fixed radiator is used for radiating in the Tiantong mode; the radiation structure formed by the fixed radiator and the movable radiator is used for radiating in the low-orbit mode.

[0053] According to the characteristics that both the low-orbit satellite antenna and the Tiantong satellite antenna are left-hand circularly polarized radiation with a frequency difference of 500MHz, the utility model combines the ideas of shared radiator and frequency reconfigurability to carry out a "single-core dual-mode" design of the antenna, integrates the low-orbit satellite antenna and the Tiantong satellite antenna into a whole, and greatly reduces the volume of the antenna on the terminal equipment that needs to work in the Tiantong mode and the low-orbit mode respectively.

[0054] The utility model is an adjustable handheld terminal antenna for low-orbit and sky-communication satellite communications, which also includes an elastic conductive member 201 for connecting a fixed radiator and a movable radiator. Specifically, one end of the elastic conductive member 201 is fixedly connected to the fixed radiator; the other end of the elastic conductive member 201 is in contact with the movable radiator in the low-orbit mode and is not connected in the sky-communication mode. The elastic conductive member 201 is a metal spring or a metal wire with good elasticity. Preferably, the elastic conductive member 201 is a metal spring.

[0055] In the utility model, the fixed radiator comprises a first radiating arm 202, a second radiating arm 203 and a fixed medium tube 204, the first radiating arm 202 and the second radiating arm 203 are both spirally wrapped around the outer wall of the fixed medium tube 204 along the axial direction of the fixed medium tube 204, and the spiral angle of the first radiating arm 202 is smaller than the spiral angle of the second radiating arm 203; one end of the first radiating arm 202 close to the movable radiator and one end of the second radiating arm 203 close to the movable radiator are both connected with an elastic conductive member 201, and the first radiating arm 202 and the second radiating arm 203 are both connected to the movable radiator through the elastic conductive member 201; the first radiating arm 202 and the second radiating arm 203 are both electrically connected to a feeding base, and the first radiating arm 202 and the second radiating arm 203 are fed through the feeding base; the fixed medium tube 204 is fixedly connected to the feeding base, and the fixed medium tube 204 is fixedly supported by the feeding base.

[0056] In the utility model, the movable radiator comprises a first extended radiating arm 102, a second extended radiating arm 103 and an movable medium tube 104. The first extended radiating arm 102 and the second extended radiating arm 103 are both spirally wrapped around the outer wall of the movable medium tube 104 along the axial direction of the movable medium tube 104. The helical angle of the first extended radiating arm 102 is greater than the helical angle of the first radiating arm 202, and the helical angle of the second extended radiating arm 103 is greater than the helical angle of the second radiating arm 203. The first extended radiating arm 102 is connected to the movable medium tube 104 by an elastic conductive member 201. The first extended radiation arm 104 is electrically connected to the first radiation arm 202, and the second extended radiation arm 103 is electrically connected to the second radiation arm 203 through the elastic conductive member 201. Specifically, in the low-orbit mode, the first extended radiation arm 102 is electrically connected to the first radiation arm 202 through the elastic conductive member 201, and the second extended radiation arm 103 is electrically connected to the second radiation arm 203 through the elastic conductive member 201; in the sky-through mode, the first extended radiation arm 102 is not connected to the first radiation arm 202, and the second extended radiation arm 103 is not connected to the second radiation arm 203. One end of the movable dielectric tube 104 extends into the fixed dielectric tube 204, and can be extended and retracted along the axial direction of the fixed dielectric tube 204 to adjust the length of the antenna radiation part.

[0057] In the present invention, there are multiple first radiation arms 202 and multiple second radiation arms 203, and the multiple first radiation arms 202 and multiple second radiation arms 203 are all spirally wrapped around the outer wall of the fixed medium tube 204 along the axial direction of the fixed medium tube 204, and the first radiation arms 202 and the second radiation arms 203 are arranged at intervals;

[0058] There are multiple first extended radiation arms 102 and multiple second extended radiation arms 103, and the multiple first extended radiation arms 102 and multiple second extended radiation arms 103 are spirally wrapped around the outer wall of the active medium tube 104 along the axial direction of the active medium tube 104, and the first extended radiation arms 102 and the second extended radiation arms 103 are arranged at intervals.

[0059] Specifically, the number of the first radiation arm 202, the second radiation arm 203, the first extended radiation arm 102 and the second extended radiation arm 103 is equal, and preferably four. Based on the development of antenna technology or the actual radiation matching requirements, the technical field can set the number according to actual needs, such as eight, sixteen, etc.

[0060] In the present invention, the number of the elastic conductive members 201 is equal to the sum of the number of the first radiating arms 202 and the number of the second radiating arms 203 .

[0061] See also Figure 7 The utility model provides an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, and further includes an elastic conductive component sleeve, which is formed by extending the fixed medium tube 204 toward one end close to the active radiator, that is, the elastic conductive component sleeve and the fixed medium tube 204 are integrally formed, and the elastic conductive component 201 is contacted and connected with the elastic conductive component sleeve. Specifically, one end of the elastic conductive component 201 is fixedly connected to the fixed medium tube 204, and the fixed connection can be welding, bolt fixing or screw fixing. Preferably, in the utility model, the fixed connection is welding; one end of the elastic conductive component 201 extends along the elastic conductive component sleeve toward a direction close to the first extended radiation arm 102 and the second extended radiation arm 103.

[0062] In the present invention, a slot 206 is provided on one side of the elastic conductive member pressing sleeve near the movable medium tube 104, and a solid stopper 205 is provided in the slot 206. The movable medium tube 104 is in contact and connected with the elastic conductive member pressing sleeve through the solid stopper 205. A movable gap is formed between the movable medium tube 104 and the elastic conductive member pressing sleeve through the solid stopper 205. The solid stopper 205 can play a role in fixing and supporting the fixed medium tube 204, avoiding deformation caused by direct contact between the movable medium tube 104 and the fixed medium tube 204; on the other hand, it also leaves elastic deformation space for the elastic conductive member 201, protecting the elastic conductive member 201. At the same time, the solid stopper 205 also plays a guiding role for the movable medium tube 104, preventing the center of gravity of the movable medium tube 104 from shifting during the extension and retraction process. Among them, the solid stopper 205 can be a plastic pad, a rubber pad, a plastic pad, etc.

[0063] See also Figure 5 and Figure 6 The utility model includes an adjustable handheld terminal antenna for low-orbit and Tiantong satellite communications, and further includes an outer cover 401, which is sleeved on the outer side of the feeding base, the outer side of the fixed radiator and the outer side of the movable radiator. One end of the feeding base extends to the outer side of the outer cover 401 for feeding; one end of the movable radiator extends to the outer side of the outer cover 401 for applying active force, and the feeding base, the fixed radiator and the movable radiator are protected by the outer cover 401.

[0064] In the present invention, an annular groove 4011 is provided on one side of the outer cover 401 close to the active medium tube 104, and an elastic stopper 402 is provided in the annular groove 4011. The outer cover 401 is in contact with and connected to the active medium tube 104 through the elastic stopper 402. The outer cover 401 guides and stops the active medium tube 104 through the elastic stopper 402, so as to prevent the active medium tube 104 from randomly expanding and contracting in a free state and affecting the fixed radiator. The elastic stopper 402 can be a rubber ring, a plastic ring, etc.

[0065] The utility model of an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes a pull rod 101 and an end cap 105. The pull rod 101 is connected to the movable medium tube 104, and the pull rod 101 is arranged at one end away from the fixed medium tube 204; the end cap 105 is connected to the pull rod 101, and the end cap 105 is arranged at one end away from the movable medium tube 104. Specifically, one end of the pull rod 101 is fixedly connected to the movable medium tube 104, and the other end of the pull rod 101 is fixedly connected to the end cap 105, and the end cap 105 is convenient for people to grasp and apply force when pulling.

[0066] In the utility model, the feeding base includes a shell, a phase shifter 301, a PCB pad 302, an SMA single-core cable connector 303 and an SMA single-core cable 304. The SMA single-core cable connector 303 and the phase shifter 301 are respectively arranged at opposite ends of the shell, and the phase shifter 301 is arranged close to the first radiation arm 202 and the second radiation arm 203, and is electrically connected to the first radiation arm 202 and the second radiation arm 203. The shell is fixedly connected to the phase shifter 301 and the fixed medium tube 204 through the PCB pad 302, and the phase shifter 301 and the fixed medium tube 204 are fixedly supported; the SMA single-core cable connector 303 is fixedly connected to the shell, one end of the SMA single-core cable 304 is connected to the SMA single-core cable connector 303, and the other end passes through the shell and the PCB pad 302 and is connected to the phase shifter 301.

[0067] The feeding base of the utility model adopts an SMA single-core connector for feeding, which not only reduces the size and space of the antenna but also saves design costs compared to a double-core connector.

[0068] In the utility model, SMA in the SMA single-core connector is the abbreviation of SubMiniature version A.

[0069] Example 1

[0070] See also Figure 3 and Figure 4 , this embodiment is an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, which works in Tiantong mode. At this time, the pull rod 101 extends the movable medium tube 104 into the fixed medium tube 204, and the first extended radiation arm 102 is not connected to the first radiation arm 202, and the second extended radiation arm 103 is not connected to the second radiation arm 203, that is, the first extended radiation arm 102 is not connected to the first radiation arm 202, and the second extended radiation arm 103 is not connected to the second radiation arm 203. The number of the first radiation arm 202 and the second radiation arm 203 is four, so that the fixed radiator has an eight-arm spiral structure. Among them, the length of the first radiation arm 202 is less than the length of the second radiation arm 203, so that the short radiation arm formed by the first radiation arm 202 and the long radiation arm formed by the second radiation arm 203 respectively work in the two frequency bands of 2170MHz-2200MHz and 1980MHz-2010MHz, realizing the Tiantong satellite communication function.

[0071] In this embodiment, the height of the entire adjustable handheld terminal antenna for low-orbit and Tiantong satellite communications is 130 mm, and the diameter of the outer cover 401 corresponding to the fixed medium tube 204 is 20 mm. Among them, the first radiation arm 202 and the second radiation arm 203 constitute a group of radiators, that is, a total of four groups of radiators, and the phase shifter 301 applies equal amplitude and phase difference of 90° to the four groups of radiators.

[0072] In this embodiment, six slots 206 are arranged on one side of the elastic conductive member pressing sleeve close to the active medium pipe 104, and the six slots 206 are evenly distributed along the circumference of the active medium pipe 104, and each slot 206 corresponds to a solid stopper 205. Preferably, two adjacent slots 206 are staggered.

[0073] In this embodiment, the helical angle of the first radiation arm 202 is 57°, and the helical angle of the second radiation arm 203 is 59°.

[0074] See also Fig.10 The present embodiment is an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, which works in Tiantong mode, and the standing wave ratio in the working frequency band is less than 1.8. The two-dimensional gain pattern of the elevation plane at the two frequency points of 1995MHz and 2185MHz in the center frequency band of the Tiantong satellite frequency band is shown in FIG. Fig.11 The circular polarization gain of the antenna in this embodiment is greater than 2.5dBi in the range of elevation angles of 45° to 90°, meeting the requirements of Tiantong satellite communication antennas.

[0075] Example 2

[0076] See also Figure 1 and Figure 2 , this embodiment is an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, which works in the low-orbit mode. At this time, the pull rod 101 pulls out the movable medium tube 104 from the fixed medium tube 204, so that the first extended radiation arm 102 is electrically connected to the first radiation arm 202 through the metal spring, and the second extended radiation arm 103 is electrically connected to the second radiation arm 203 through the metal spring, that is, the first extended radiation arm 102 is connected to the first radiation arm 202, and the second extended radiation arm 103 is connected to the second radiation arm 203. The number of the first extended radiation arm 102, the first radiation arm 202, the second extended radiation arm 103 and the second radiation arm 203 is four, so that the radiation structure formed by the fixed radiator and the movable radiator is an eight-arm spiral structure. Among them, the length of the first extended radiation arm 102 is smaller than the length of the second extended radiation arm 103, and the length of the first radiation arm 202 is smaller than the length of the second radiation arm 203, so that the short radiation arm formed by the first extended radiation arm 102 and the first radiation arm 202 and the long radiation arm formed by the second extended radiation arm 103 and the second radiation arm 203 respectively operate in the two frequency bands of 1668-1675MHz and 1518-1525MHz, thereby realizing the low-orbit satellite communication function.

[0077] In this embodiment, the height of the entire adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications is 160 mm, the diameter of the outer cover 401 corresponding to the fixed dielectric tube 204 is 20 mm, and the outer diameter of the pull-out rod 101 and the movable dielectric tube 104 is 15 mm. Among them, the first extended radiation arm 102, the first radiation arm 202, the second extended radiation arm 103 and the second radiation arm 203 constitute a group of radiators, that is, a total of four groups of radiators, and the phase shifter 301 applies equal amplitude and phase difference of 90° to the four groups of radiators respectively.

[0078] In this embodiment, eight slots 206 are arranged on one side of the elastic conductive member pressing sleeve close to the active medium pipe 104, and the eight slots 206 are evenly distributed along the circumference of the active medium pipe 104, and each slot 206 corresponds to a solid stopper 205. Preferably, two adjacent slots 206 are staggered.

[0079] In this embodiment, the spiral angles of the first extended radiation arm 102 and the first radiation arm 202 are 68° and 57° respectively, and the spiral angles of the second extended radiation arm 103 and the second radiation arm 203 are 70° and 59° respectively.

[0080] See also Figure 8 In this embodiment, an adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications works in low-orbit mode, and the standing wave ratio in the working frequency band is less than 1.6, and the matching degree is good. Take the center frequency point of the uplink and downlink frequency band of the low-orbit mode, and its two-dimensional gain pattern in the elevation plane is shown in Fig. 9 The normal circular polarization gain is greater than 3dBic, and the circular polarization gain is greater than 2dBic above an elevation angle of 10°, which well meets the low-elevation-angle and wide-beam requirements of low-orbit satellite communications.

[0081] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features therein may be replaced by equivalents. However, these modifications or equivalent replacements do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the present application.

Claims

1. An adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications, characterized in that: include: Feeding base; A fixed radiator is connected to the feeding base; and a movable radiator, which is movably connected to the fixed radiator and arranged opposite to the feeding base; The fixed radiator is used for radiating in the sky-through mode; the radiation structure formed by the fixed radiator and the movable radiator is used for radiating in the low-orbit mode.

2. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 1 is characterized in that: The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications also includes an elastic conductive piece (201) for connecting a fixed radiator and a movable radiator.

3. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 2 is characterized in that: The fixed radiator comprises a first radiating arm (202), a second radiating arm (203) and a fixed dielectric tube (204); the first radiating arm (202) and the second radiating arm (203) are both spirally wound around the outer wall of the fixed dielectric tube (204) along the axial direction of the fixed dielectric tube (204); and the spiral angle of the first radiating arm (202) is smaller than the spiral angle of the second radiating arm (203); An end of the first radiation arm (202) close to the movable radiator and an end of the second radiation arm (203) close to the movable radiator are both connected to an elastic conductive member (201), and the first radiation arm (202) and the second radiation arm (203) are both connected to the movable radiator via the elastic conductive member (201); The first radiation arm (202) and the second radiation arm (203) are both electrically connected to the feeding base, and the fixed medium tube (204) is fixedly connected to the feeding base.

4. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 3 is characterized in that: The movable radiator comprises a first extended radiating arm (102), a second extended radiating arm (103) and a movable medium tube (104); the first extended radiating arm (102) and the second extended radiating arm (103) both spirally surround the outer wall of the movable medium tube (104) along the axial direction of the movable medium tube (104); the spiral angle of the first extended radiating arm (102) is greater than the spiral angle of the first radiating arm (202); and the spiral angle of the second extended radiating arm (103) is greater than the spiral angle of the second radiating arm (203); The first extended radiation arm (102) is electrically connected to the first radiation arm (202) through an elastic conductive member (201), and the second extended radiation arm (103) is electrically connected to the second radiation arm (203) through an elastic conductive member (201); One end of the movable medium pipe (104) extends into the fixed medium pipe (204) and is capable of extending and retracting along the axial direction of the fixed medium pipe (204).

5. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 4 is characterized in that: There are a plurality of the first radiation arms (202) and the second radiation arms (203), the plurality of first radiation arms (202) and the plurality of second radiation arms (203) are all spirally wound around the outer wall of the fixed medium tube (204) along the axial direction of the fixed medium tube (204), and the first radiation arms (202) and the second radiation arms (203) are arranged at intervals; There are a plurality of the first extended radiation arms (102) and the second extended radiation arms (103), the plurality of first extended radiation arms (102) and the plurality of second extended radiation arms (103) are all spirally wound around the outer wall of the movable medium tube (104) along the axial direction of the movable medium tube (104), and the first extended radiation arms (102) and the second extended radiation arms (103) are arranged at intervals; The number of the elastic conductive members (201) is equal to the sum of the number of the first radiation arms (202) and the number of the second radiation arms (203).

6. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 5, characterized in that: The adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes an elastic conductive component pressing sleeve, the elastic conductive component pressing sleeve is formed by extending the fixed dielectric tube (204) toward one end close to the active radiator, and the elastic conductive component (201) is in contact and connected with the elastic conductive component pressing sleeve.

7. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 6, characterized in that: A slot (206) is provided on one side of the elastic conductive component pressing sleeve close to the movable medium tube (104), a solid stopper (205) is provided in the slot (206), and the movable medium tube (104) is in contact and connected with the elastic conductive component pressing sleeve via the solid stopper (205).

8. The adjustable handheld terminal antenna integrating low-orbit and sky-communication satellite communications according to claim 4, characterized in that: The adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes an outer cover (401), which is sleeved on the outside of a feeding base, the outside of a fixed radiator, and the outside of a movable radiator. One end of the feeding base extends to the outside of the outer cover (401) for feeding; one end of an active medium tube (104) in the movable radiator extends to the outside of the outer cover (401) for applying an active force.

9. The adjustable handheld terminal antenna integrating low-orbit and sky-communication satellite communications according to claim 8, characterized in that: An annular groove (4011) is provided on one side of the outer cover (401) close to the movable medium pipe (104), an elastic stopper (402) is provided in the annular groove (4011), and the outer cover (401) is in contact with and connected to the movable medium pipe (104) via the elastic stopper (402).

10. The adjustable handheld terminal antenna integrating low-orbit and sky-high satellite communications according to claim 4, characterized in that: The adjustable handheld terminal antenna integrating low-orbit and Tiantong satellite communications also includes a pull-out rod (101) and an end cap (105); the pull-out rod (101) is connected to a movable medium tube (104), and the pull-out rod (101) is arranged at an end away from the fixed medium tube (204); the end cap (105) is connected to the pull-out rod (101), and the end cap (105) is arranged at an end away from the movable medium tube (104).

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