Lens antenna and communication base station

Abstract

The utility model discloses a lens antenna and a communication base station, by adopting the lens antenna, the direction of electromagnetic wave beams emitted to a lens by two radiation units can be adjusted by flexibly adjusting the distance between the two radiation units, and finally the size of the electromagnetic wave beams formed by the lens antenna can be adjusted. The lens antenna comprises an antenna housing (1), a lens (2), a radiation unit (3) and an adjusting assembly. The number of the radiation units (3) is two, and the two radiation units (3) are arranged on the inner side wall of the antenna shell (1) in a sliding mode. The adjusting assembly comprises a driving module and a transmission screw rod (4); the driving module is arranged on the inner side wall of the antenna shell (1) and is used for driving the transmission screw (4) to rotate; the transmission screw (4) is rotationally arranged on the inner side wall of the antenna shell (1) and located between the two radiation units (3), the rotation directions of threads at the two ends of the transmission screw (4) are opposite, and the two ends of the transmission screw are connected with the two radiation units respectively.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of communication equipment, concretely relates to a lens antenna and communication base station. BACKGROUND

[0002] In the communication field, in order to realize the signal coverage of specific area, it is usually needed to adjust the waveform of electromagnetic wave signal emitted by feed source. Among them, the lens antenna is a kind of antenna that is applied more at present, and the lens antenna is a kind of antenna that can penetrate electromagnetic wave, converts the spherical wave or cylindrical wave of point source or linear source into plane wave to obtain pen-shaped, fan-shaped or other shape beam.

[0003] Based on the difference of different scene coverage demand, the existing shaped lens antenna is arranged with multiple radiation units along a circular arc curve in turn, and the receiving and transmitting power of multiple radiation units is realized along single direction in turn by power distributor to increase or decrease, so that the beam has specific shape.

[0004] But this setting mode has the following problems: the interval of each radiation unit cannot be controlled, the beam direction of each radiation unit to the lens antenna cannot be changed, so that the size of beam formed by the shaped lens antenna finally cannot be controlled. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies existing in prior art, provide a kind of lens antenna and communication base station, adopt the lens antenna, and the interval of two radiation units can be adjusted flexibly, the direction of electromagnetic wave beam emitted by two radiation units to lens can be adjusted, and finally the size of electromagnetic wave beam formed by lens antenna can be adjusted.

[0006] Firstly, the utility model embodiment provides a kind of lens antenna, and lens antenna includes antenna shell, lens, radiation unit and adjustment component.Lens is arranged in the antenna shell, and it is used to shape the electromagnetic wave beam passing through the lens.The number of radiation unit is two, and two radiation units are slidably arranged on the inner side wall of the antenna shell, and two radiation units are spaced apart and opposite to the center of the lens, and two radiation units are used to emit electromagnetic wave to the lens.Adjustment component includes drive module, transmission screw rod;Drive module is arranged on the inner side wall of the antenna shell and is used to drive the rotation of transmission screw rod;Transmission screw rod is rotatably arranged on the inner side wall of the antenna shell and is located between two radiation units, and the rotation direction of the thread of the two ends of transmission screw rod is opposite, and the two ends of transmission screw rod are connected with two radiation units respectively.When transmission screw rod rotates, two radiation units are driven to approach or move away from each other to adjust the direction of electromagnetic wave beam emitted by two radiation units to the lens.

[0007] In some embodiments, the adjusting assembly further comprises transmission members, the number of which is two, and each of the transmission members is threadedly connected with one end of the transmission screw; two of the transmission members are correspondingly arranged with two of the radiation units, and each of the transmission members is connected with one of the radiation units. When the transmission screw rotates, the two transmission members are driven to move towards or away from each other, so as to drive the two radiation units to move towards or away from each other. Each of the transmission members has a sliding groove, and the extension direction of each of the sliding grooves is perpendicular to the extension direction of the transmission screw. Each of the radiation units is connected with a connecting cross bar on the side close to the transmission screw, and the extension direction of each of the connecting cross bars is perpendicular to the moving plane of the transmission member, and each of the connecting cross bars is slidingly arranged in the sliding groove of the corresponding transmission member.

[0008] In some embodiments, each of the radiation units comprises a support frame, a reflecting plate and a feed source. The support frame is slidingly arranged on the inner side wall of the antenna housing and used for supporting the reflecting plate; and the connecting cross bar is connected on the side of the support frame close to the transmission screw. The reflecting plate is arranged on the end of the support frame close to the lens and used for reflecting electromagnetic waves. The feed source is arranged on the reflecting plate and located between the reflecting plate and the lens and used for emitting and receiving electromagnetic waves.

[0009] In some embodiments, the lens antenna further comprises a power distribution mechanism. The power distribution mechanism is arranged on the inner side wall of the antenna housing and electrically connected with the external signal source and the two feed sources respectively, and used for distributing the external signal source to the two feed sources, so that the two feed sources emit and receive electromagnetic waves.

[0010] In some embodiments, the power distribution mechanism comprises a first feed unit, a second feed unit and a second driving member. The first feed unit is arranged on the inner side wall of the antenna housing, one end of which is electrically connected with the external signal source, and the other end of which is electrically connected with one of the feed sources, and used for transmitting part of the signals of the external signal source to the feed source electrically connected therewith. The second feed unit is slidingly arranged on the inner side wall of the antenna housing; the second feed unit is oppositely and spacedly arranged with the first feed unit, so as to be coupled with the first feed unit to conduct, so that another part of the signals of the external signal source is transmitted from the first feed unit to the second feed unit; and the second feed unit is electrically connected with the other feed source, and used for transmitting another part of the signals of the external signal source to the feed source electrically connected therewith. The second driving member is arranged on the inner side wall of the antenna housing and connected with the second feed unit, and used for driving the second feed unit to move towards or away from the first feed unit, so as to adjust the coupling strength between the first feed unit and the second feed unit, thereby adjusting the power distribution ratio of the signals of the external signal source transmitted to the first feed unit and the second feed unit.

[0011] In some embodiments, the second feeding unit comprises a coupling portion and a movable portion connected with each other; the coupling portion is arranged opposite to and spaced apart from the first feeding unit to be coupled with the first feeding unit to be conductive, and the feeding source electrically connected with the second feeding unit is electrically connected with the coupling portion; the movable portion is located on the side of the coupling portion away from the first feeding unit. A slide rail is arranged on the inner side wall of the antenna housing corresponding to the position of the movable portion, the extending direction of the slide rail is parallel to the moving direction of the second feeding unit, and the movable portion is slidingly arranged on the slide rail. A second driving member is connected with the movable portion to drive the movable portion to move along the slide rail, so that the coupling portion is close to or away from the first feeding unit to adjust the coupling strength between the first feeding unit and the coupling portion, thereby adjusting the power distribution ratio of the signal transmitted from the external signal source to the first feeding unit and the coupling portion.

[0012] In some embodiments, the movable portion is formed with teeth, and the extending direction of the teeth is parallel to the moving direction of the second feeding unit. The second driving member is connected with the teeth on the movable portion through a gear.

[0013] In some embodiments, two arc-shaped guide rails are arranged on the inner side wall of the antenna housing, and the two arc-shaped guide rails are arranged corresponding to the two radiation units, and the center of each arc-shaped guide rail coincides with the center of the lens. Each support frame is slidingly arranged on the corresponding arc-shaped guide rail, so that when each support frame slides along the arc-shaped guide rail, the center line of the radiation direction of the corresponding feeding source and the median line of the corresponding reflecting plate pass through the center of the lens.

[0014] In some embodiments, the lens is a dielectric lens; and / or, the interior of the antenna housing is concave, the lens is arranged in the concave portion of the concave shape, and the lens is fixedly connected with the antenna housing through a support.

[0015] Therefore, the lens antenna provided by the embodiment of the present application can shape the electromagnetic wave beam passing through the lens. Specifically, by arranging two radiation units at intervals and sliding the two radiation units on the inner side wall of the antenna shell and opposite the center of the lens, when the positions of the two radiation units change due to movement, the directions of the electromagnetic waves emitted by the two radiation units to the lens will also change, so that the size of the beam formed by the lens antenna will also change. By arranging a driving module and a transmission screw, and arranging the threads at the two ends of the transmission screw in opposite directions, the two ends of the transmission screw are connected with the two radiation units respectively, and when the driving module drives the transmission screw, the two radiation units can be driven to move closer to or away from each other, so as to adjust the direction of the electromagnetic wave beam emitted by the two radiation units to the lens, and finally the size of the beam formed by the lens antenna can be adjusted.

[0016] In a second aspect, the embodiment of the present application also provides a communication base station, which comprises a baseband processing unit, a radio frequency remote unit and the lens antenna in the first aspect. The baseband processing unit is connected with an external network and is used for converting network signals into baseband signals. The radio frequency remote unit is electrically connected with the baseband processing unit and is used for converting the baseband signals into radio frequency signals for transmission. The lens antenna is electrically connected with the radio frequency remote unit and is used for receiving the radio frequency signals and emitting electromagnetic waves outward to realize communication.

[0017] The communication base station provided by the embodiment of the present application has the same beneficial effects as the lens antenna described above, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 is a schematic view of a lens antenna provided by the embodiment of the present application;

[0019] Figure 2 Fig. 4 is a schematic view of a power distribution mechanism provided by the embodiment of the present application.

[0020] In the figure, 1 is an antenna shell, 2 is a lens, 3 is a radiation unit, 4 is a transmission screw, 5 is a transmission member, 6 is a connecting cross bar, 7 is a support frame, 8 is a reflecting plate, 9 is a feed source, 10 is a power distribution mechanism, 11 is a first feed unit, 12 is a second feed unit, 13 is a second driving member, 14 is a coupling part, 15 is a movable part, 16 is a sliding rail, 17 is an arc-shaped guide rail, 18 is a first motor, 19 is a transmission gear, 20 is an adjusting gear, 21 is a mounting plate, and 22 is a driving gear. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the drawings and embodiments.

[0022] Embodiment 1:

[0023] As Figure 1 shown in the utility model embodiment provides a kind of lens antenna, it is applied to communication base station.

[0024] As Figure 1 shown, the lens antenna includes antenna housing 1, lens 2, radiating unit 3 and adjustment assembly.Lens 2 is arranged in antenna housing 1, for the electromagnetic wave beam that passes through lens 2 is shaped.The number of radiating unit 3 is two, two radiating unit 3 are slidably arranged on the inner side wall of antenna housing 1, and two radiating unit 3 are spaced apart and opposite to the center of lens 2, and two radiating unit 3 are used to emit electromagnetic wave to lens 2.

[0025] Exemplarily, the material of antenna housing 1 is wave-transparent material, and is preferably made of low dielectric constant (dielectric constant is about 1.03-1.05) material, and the low dielectric constant material can be PP, PC and modified material thereof.These materials have good electromagnetic wave penetration characteristics in electrical performance, and can withstand the action of external harsh environment in mechanical performance, so as to improve the electrical performance and working stability of the multi-beam lens antenna 1.

[0026] Antenna housing 1 forms a containing space inside, and lens 2, radiating unit 3 and adjustment assembly are arranged in the containing space inside antenna housing 1, and antenna housing 1 can protect the components arranged inside.

[0027] Exemplarily, lens 2 is arranged close to the inner side wall of antenna housing 1, so as to fully utilize the containing space inside antenna housing 1.

[0028] Exemplarily, the shape of lens 2 can be cylindrical or spherical.

[0029] Exemplarily, lens 2 is a dielectric lens.The dielectric lens can change the electromagnetic wave propagation path by using the electromagnetic characteristics of dielectric material.

[0030] Exemplarily, after the electromagnetic wave signal enters lens 2, lens 2 can adjust the phase and amplitude of the electromagnetic wave signal by using its own physical characteristics, so that the electromagnetic wave signal presents a specific direction and shape distribution in space, and realizes beam shaping of the electromagnetic wave signal.

[0031] Exemplarily, as Figure 1 shown, lens 2 and radiating unit 3 are arranged on opposite sides in antenna housing 1 respectively.

[0032] Exemplarily, the electromagnetic wave signals input by two radiating unit 3 towards lens 2 are directed to different directions after beam shaping, so as to realize coverage of electromagnetic wave signals in different directions, and two beams after beam shaping are superimposed to form the beam of the lens antenna in the embodiment.

[0033] The two radiation units 3 are both slidingly arranged on the inner side wall of the antenna housing 1 and both face the center of the lens 2, so that when the positions of the two radiation units 3 change, the included angle between the directions of the electromagnetic waves emitted by the two radiation units 3 to the lens 2 also changes, and the size of the beam formed by the lens antenna also changes.

[0034] As shown in Figure 1 The adjusting assembly includes a driving module and a transmission screw 4. The driving module is arranged on the inner side wall of the antenna housing 1 and is used to drive the transmission screw 4 to rotate. The transmission screw 4 is rotatably arranged on the inner side wall of the antenna housing 1 and is located between the two radiation units 3. The threads on the two ends of the transmission screw 4 have opposite directions of rotation, and the two ends of the transmission screw are connected with the two radiation units respectively. When the transmission screw 4 rotates, the two radiation units 3 are driven to move close to or away from each other, so as to adjust the directions of the electromagnetic wave beams emitted by the two radiation units 3 to the lens 2.

[0035] For example, as shown in Figure 1 Two mounting plates 21 are arranged side by side on the inner side wall of the antenna housing 1. The transmission screw 4 is rotatably arranged on the two mounting plates 21.

[0036] As shown in Figure 1 The driving module includes a first motor 18 and a transmission gear 19. The first motor 18 is arranged on one of the mounting plates 21. The first motor 18 has a driving gear 22 connected with the transmission gear 19, and the transmission gear 19 is connected with the transmission screw 4.

[0037] When the first motor 18 rotates clockwise or counterclockwise, the driving gear 22 is driven to rotate, and the transmission screw 4 is driven to rotate through the transmission gear 19.

[0038] For example, the two ends of the transmission screw are connected with the two radiation units through transmission members respectively.

[0039] By making the threads on the two ends of the transmission screw 4 have opposite directions of rotation and connecting the two ends of the transmission screw with the two radiation units respectively, when the transmission screw 4 rotates, the two radiation units 3 can be driven to move close to or away from each other, so as to adjust the directions of the electromagnetic wave beams emitted by the two radiation units 3 to the lens 2 respectively, and adjust the included angle of the electromagnetic wave beams emitted by the two radiation units 3 to the lens 2 respectively, so as to change the size of the beam of the lens antenna.

[0040] Therefore, the lens antenna provided in this embodiment of the invention can shape the electromagnetic wave beam passing through the lens 2. Specifically, by setting two spaced-apart radiating elements 3, and slidably mounting both radiating elements 3 on the inner wall of the antenna housing 1, directly opposite the center of the lens 2, when the positions of the two radiating elements 3 change due to movement, the direction of the electromagnetic waves emitted by the two radiating elements 3 towards the lens 2 also changes, thus changing the size of the final beam formed by the lens antenna. By setting a driving module and a transmission screw 4, and making the threads at both ends of the transmission screw 4 turn in opposite directions, with both ends of the transmission screw connected to the two radiating elements respectively, when the driving module drives the transmission screw 4, it can drive the two radiating elements 3 to move closer or further away from each other, thereby adjusting the direction of the electromagnetic wave beam emitted by the two radiating elements 3 towards the lens 2, and ultimately adjusting the size of the final beam formed by the lens antenna.

[0041] In some embodiments, such as Figure 1 As shown, the adjustment assembly also includes two transmission components 5, each threadedly connected to both ends of the transmission screw 4. The two transmission components 5 are correspondingly positioned with respect to two radiation units 3, with each transmission component 5 connected to a corresponding radiation unit 3. When the transmission screw 4 rotates, it drives the two transmission components 5 to move closer or further apart, thereby causing the two radiation units 3 to move closer or further apart. Each transmission component 5 has a sliding groove, and the extension direction of each sliding groove is perpendicular to the extension direction of the transmission screw 4. Each radiation unit 3 has a connecting crossbar 6 connected to the side closest to the transmission screw 4. The extension direction of each connecting crossbar 6 is perpendicular to the moving plane of the transmission component 5, and each connecting crossbar 6 is slidably disposed within the sliding groove of the corresponding transmission component 5.

[0042] For example, such as Figure 1 As shown, each transmission component 5 has a threaded hole, and the transmission component 5 passes through the threaded hole and is threadedly connected to the transmission screw 4.

[0043] For example, such as Figure 1 As shown, the transmission component 5 is elongated, with the extension direction of the elongated component perpendicular to the transmission screw 4. A threaded hole is located at one end of the elongated component, and a sliding groove is located at the other end of the elongated component.

[0044] For example, each connecting crossbar 6 is fixed to the corresponding radiating unit 3.

[0045] Understandably, due to the limiting effect of the connecting crossbar 6, the corresponding transmission components 5 cannot rotate around the transmission screw 4. Therefore, when the transmission screw 4 rotates, the two transmission components 5 can only move closer or further apart along the transmission screw 4. Because the extension direction of each sliding groove is perpendicular to the extension direction of the transmission screw 4, each connecting crossbar 6, slidably positioned in the sliding groove of the corresponding transmission component 5, cannot disengage from the sliding groove. This allows the two transmission components 5 to drive the two radiating units 3 closer or further apart via each connecting crossbar 6. Furthermore, even if the movement direction of the radiating unit 3 and the movement direction of the transmission component 5 are not on the same straight line, the transmission component 5 can still transmit the driving force generated on the transmission component 5 when the transmission screw 4 rotates to the corresponding radiating unit 3 through the sliding groove and connecting crossbar 6, thereby driving the radiating unit 3 to slide along the inner wall of the antenna housing 1.

[0046] In some embodiments, such as Figure 1 As shown, each radiating element 3 includes a support frame 7, a reflector 8, and a feed 9. The support frame 7 is slidably mounted on the inner wall of the antenna housing 1 to support the reflector 8; a connecting crossbar 6 is connected to the support frame 7 on the side near the drive screw 4. The reflector 8 is located at the end of the support frame 7 near the lens 2 to reflect electromagnetic waves. The feed 9 is mounted on the reflector 8 and located between the reflector 8 and the lens 2 to transmit and receive electromagnetic waves.

[0047] For example, the transmission component 5 drives the support frame 7 to move via the connecting crossbar 6, thereby driving the reflector 8 and the feed source 9 to move synchronously.

[0048] For example, the material of the reflector 8 is a material that can reflect electromagnetic waves, such as copper or aluminum.

[0049] For example, the type of feed 9 can be a novel wideband dual-polarized feed or a circularly polarized feed, etc.

[0050] For example, such as Figure 1 As shown, the feed source 9 can emit electromagnetic waves in two directions (the direction in which the feed source 9 points to the lens 2 and the direction in which it points to the reflector 8).

[0051] By placing the feed source 9 between the reflector 8 and the lens 2, some of the electromagnetic waves emitted by the feed source 9 will be reflected back to the lens 2 after hitting the reflector 8, thereby increasing the total intensity of the electromagnetic waves hitting the lens 2.

[0052] In some embodiments, such as Figure 1 As shown, the lens antenna also includes a power distribution mechanism 10. The power distribution mechanism 10 is disposed on the inner wall of the antenna housing 1 and is electrically connected to an external signal source and two feed sources 9, respectively, for distributing the external signal source to the two feed sources 9 so that the two feed sources 9 can transmit and receive electromagnetic waves.

[0053] For example, the signal from the external signal source can be a radio frequency signal.

[0054] For example, the power distribution mechanism can be a coupler-type power divider, a microstrip line power divider, etc.

[0055] With the above settings, the power distribution mechanism 10 can distribute the total power of the input external signal source to different feed sources 9 in a certain proportion, thereby adjusting the intensity of the electromagnetic wave signal emitted by different feed sources 9.

[0056] In some embodiments, such as Figure 2 As shown, the power distribution mechanism 10 includes a first feed unit 11, a second feed unit 12, and a second drive member 13. The first feed unit 11 is disposed on the inner wall of the antenna housing 1, with one end electrically connected to an external signal source and the other end electrically connected to a feed 9, for transmitting a portion of the signal from the external signal source to the feed 9 electrically connected to it. The second feed unit 12 is slidably disposed on the inner wall of the antenna housing 1; the second feed unit 12 is opposite to and spaced apart from the first feed unit 11, so as to couple and conduct with the first feed unit 11, so that another portion of the signal from the external signal source is transmitted from the first feed unit 11 to the second feed unit 12; the second feed unit 12 is electrically connected to another feed 9, for transmitting another portion of the signal from the external signal source to the feed 9 electrically connected to it. The second driving element 13 is disposed on the inner side wall of the antenna housing 1 and connected to the second feeding unit 12. It is used to drive the second feeding unit 12 to move closer to or further away from the first feeding unit 11, so as to adjust the coupling strength between the first feeding unit 11 and the second feeding unit 12, thereby adjusting the power distribution ratio of the signal transmitted from the external signal source to the first feeding unit 11 and the second feeding unit 12.

[0057] For example, in this embodiment, the power distribution mechanism 10 is a coupler-type power distributor.

[0058] For example, the materials of the first power supply unit 11 and the second power supply unit 12 are both conductive materials.

[0059] For example, such as Figure 2 As shown, the power distribution mechanism 10 is provided with an IN terminal, an OUT1 terminal, and an OUT2 terminal.

[0060] For example, the signal from the external signal source can be a radio frequency signal output by an external device (e.g., a radio frequency remote unit).

[0061] For example, such as Figure 2As shown, the signal from the external signal source enters the first feed unit 11 through the IN terminal. A portion of the signal from the external signal source is transmitted from the first feed unit 11 to a feed source 9 electrically connected to it through the OUT1 terminal. Because the second feed unit 12 is coupled and connected to the first feed unit 11, another portion of the signal enters the second feed unit 12 from the first feed unit 11 and is transmitted to another feed source 9 electrically connected to it through the OUT2 terminal.

[0062] like Figure 2 As shown, the distance between the second feed unit 12 and the first feed unit 11 is the coupling distance D. The size of the coupling distance D will affect the power distribution ratio of the signal from the external signal source to the second feed unit 12 and the first feed unit 11.

[0063] For example, before the coupling gap D is adjusted, the power distribution ratio of the signals from the external signal source to the second feed unit 12 and the first feed unit 11 is 50% each. When the coupling gap D increases, the coupling strength between the second feed unit 12 and the first feed unit 11 decreases. At this time, the power distribution ratio of the signal distributed to the second feed unit 12 decreases, for example, from 50% to 30%, while the power distribution ratio of the signal distributed to the first feed unit 11 increases, for example, from 50% to 80%.

[0064] For example, the second driving member 13 is an electric driving component that can drive the second power supply unit 12 to move closer to or further away from the first power supply unit 11 when energized, thereby changing the coupling distance D between the second power supply unit 12 and the first power supply unit 11 and changing the power distribution ratio of the signal transmitted from the external signal source to the first power supply unit 11 and the second power supply unit 12.

[0065] With the above settings, the power distribution ratio of the signal transmitted from the external signal source to the first power supply unit 11 and the second power supply unit 12 can be changed by the second driving component 13.

[0066] In some embodiments, the second feed unit 12 includes a coupling portion 14 and a movable portion 15 interconnected. The coupling portion 14 is positioned opposite and spaced apart from the first feed unit 11 to be coupled and connected to the first feed unit 11. The feed source 9, which is electrically connected to the second feed unit 12, is electrically connected to the coupling portion 14. The movable portion 15 is located on the side of the coupling portion 14 away from the first feed unit 11. A slide rail 16 is provided on the inner wall of the antenna housing 1 at the position corresponding to the movable portion 15. The extension direction of the slide rail 16 is parallel to the movement direction of the second feed unit 12, and the movable portion 15 is slidably disposed on the slide rail 16. A second driving member 13 is connected to the movable portion 15 and is used to drive the movable portion 15 to move along the slide rail 16, so that the coupling portion 14 moves closer to or further away from the first feed unit 11, thereby adjusting the coupling strength between the first feed unit 11 and the coupling portion 14, and thus adjusting the power distribution ratio of the signal transmitted from the external signal source to the first feed unit 11 and the coupling portion 14.

[0067] For example, the coupling part 14 is made of a conductive material.

[0068] For example, the coupling part 14 and the movable part 15 are an integral structure, and the feed source 9, which is electrically connected to the second feed unit 12, is electrically connected to the coupling part 14 through the movable part 15.

[0069] After the coupling part 14 is coupled and connected to the first power supply unit 11, the signal that enters the second power supply unit 12 from the first power supply unit 11 enters the coupling part 14 and is transmitted to the power supply 9 electrically connected to it through the movable part 15 and the OUT2 terminal.

[0070] At this time, the distance between the coupling part 14 and the first feeding unit 11 is the coupling distance D between the second feeding unit 12 and the first feeding unit 11.

[0071] The slide rail 16 can guide the movable part 15 so that when the movable part 15 moves, it can drive the coupling part 14 to move in a direction closer to or away from the first power supply unit 11.

[0072] For example, the active part 15 is electrically connected to the OUT2 terminal via a flexible wire harness.

[0073] When the second driving member 13 drives the movable part 15 to move along the slide rail 16, it can drive the coupling part 14 to move along the slide rail 16, so that the coupling part 14 moves closer to or further away from the first power supply unit 11, thereby adjusting the distance between the coupling part 14 and the first power supply unit 11, that is, adjusting the coupling strength between the first power supply unit 11 and the coupling part 14, thereby adjusting the power distribution ratio of the signal transmitted from the external signal source to the first power supply unit 11 and the coupling part 14, and changing the power distribution ratio of the signal transmitted from the external signal source to the first power supply unit 11 and the second power supply unit 12.

[0074] In some embodiments, such asFigure 2 As shown, teeth are formed on the movable part 15, and the extension direction of the teeth is parallel to the movement direction of the second power supply unit 12. The second drive member 13 is connected to the teeth on the movable part 15 through the adjusting gear 20.

[0075] For example, such as Figure 2 As shown, the number of upper teeth in the movable part 15 is multiple.

[0076] For example, such as Figure 2 As shown, the second driving component 13 includes a second motor, and an adjusting gear 20 is provided on the rotating end of the second motor. When the second motor rotates, it drives the adjusting gear 20 to rotate, which in turn drives the teeth on the movable part 15 to move, thereby driving the movable part 15 to move along the slide rail 16.

[0077] The meshing connection has the advantage of stable transmission. With the above arrangement, the second driving member 13 can drive the moving part 15 to move more stably.

[0078] In some embodiments, such as Figure 1 As shown, two arc-shaped guide rails 17 are provided on the inner wall of the antenna housing 1. The two arc-shaped guide rails 17 are correspondingly arranged with two radiating elements 3, and the center of each arc-shaped guide rail 17 coincides with the center of the lens 2. Each support frame 7 is slidably mounted on the corresponding arc-shaped guide rail 17, so that when each support frame 7 slides along the arc-shaped guide rail 17, the radiation direction center line of the corresponding feed 9 and the perpendicular bisector of the corresponding reflector 8 both pass through the center of the lens 2.

[0079] For example, the inner wall of the antenna housing 1 facing the lens 2 is an arc-shaped inner wall, and both arc-shaped guide rails 17 are set on the arc-shaped inner wall.

[0080] When lens 2 is circular, its center is the center of the circle. When lens 2 is cylindrical, its center is the center of the corresponding circular cross-section.

[0081] For example, the support frame 7 is mounted on the corresponding arc-shaped guide rail 17 and slides.

[0082] By aligning the center of the arc-shaped guide rail 17 with the center of the lens 2, each support frame 7 can rotate around the center of the lens 2 when sliding along the arc-shaped guide rail 17. This ensures that when each support frame 7 slides to any position, the radiation direction center line of the corresponding feed source 9 and the perpendicular bisector of the corresponding reflector 8 both pass through the center of the lens 2. This allows the feed source 9 to always emit electromagnetic waves directly towards the center of the lens 2, while the reflector 8 also always reflects electromagnetic waves directly towards the center of the lens 2.

[0083] In some embodiments, such as Figure 1As shown, the inside of the antenna housing 1 is concave, and the lens 2 is located in the concave part and is fixedly connected to the antenna housing 1 by a bracket.

[0084] For example, the shape of the antenna housing 1 can be spherical or cylindrical, etc., as long as it can fit the lens 2 and the radiating unit inside the antenna housing 1.

[0085] For example, such as Figure 1 As shown, the shape and size of the concave shape are adapted to lens 2.

[0086] The above configuration facilitates the fixing of the lens 2 inside the antenna housing 1 and minimizes the size of the antenna housing 1.

[0087] In some embodiments, the first motor 18 and the second drive unit 13 (second motor) are remotely connected to an external control device (e.g., a control panel in a control room) via a cable or communication module, so that personnel can control the operation of the first motor 18 and the second drive unit 13 (second motor) in real time from outside (e.g., in a control room). This allows personnel to dynamically adjust the beam size and beam shape of the lens antenna according to the actual needs of the scene, ensuring signal coverage quality.

[0088] For example, the beam of the lens antenna can be made to have a specific shape to better match the coverage requirements of special scenarios (such as strip or line scenarios), such as railway tracks, highways, and major bridges.

[0089] Example 2:

[0090] This invention also provides a communication base station, which is used in the field of communication. The communication base station includes a baseband processing unit, a radio frequency remote unit, and the lens antenna from Embodiment 1. The baseband processing unit is connected to an external network and is used to convert network signals into baseband signals. The radio frequency remote unit is electrically connected to the baseband processing unit and is used to convert the baseband signals into radio frequency signals for transmission. The lens antenna is electrically connected to the radio frequency remote unit and is used to receive the radio frequency signals and then transmit electromagnetic waves to achieve communication.

[0091] For example, the external network can be the main communication network.

[0092] For example, a communication base station includes, but is not limited to, a communication base station for mobile cellular communication, used to radiate and receive electromagnetic wave signals to achieve electromagnetic wave signal coverage.

[0093] For example, the baseband processing unit, radio frequency remote unit, and lens antenna of the communication base station are all fixed on the antenna bracket.

[0094] Communication base stations can adjust the direction of the electromagnetic wave beam emitted by the two radiating elements towards the lens by adjusting the spacing between the radiating elements, thereby adjusting the size of the electromagnetic wave beam formed by the lens antenna and thus adjusting the coverage of the communication base station to meet the usage needs of different scenarios.

[0095] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A lens antenna, characterized by The antenna shell (1) comprises: a lens (2) arranged in the antenna shell (1) and used for shaping an electromagnetic wave beam passing through the lens (2); two radiation units (3) each slidingly arranged on an inner side wall of the antenna shell (1) and spaced apart and opposite to a center of the lens (2), and each used for emitting an electromagnetic wave to the lens (2); and an adjusting assembly comprising a driving module and a transmission screw (4), wherein the driving module is arranged on the inner side wall of the antenna shell (1) and used for driving the transmission screw (4) to rotate, the transmission screw (4) is rotatably arranged on the inner side wall of the antenna shell (1) and located between the two radiation units (3), threads at two ends of the transmission screw (4) have opposite directions, and the two ends of the transmission screw are connected with the two radiation units respectively. When the transmission screw (4) rotates, the two radiation units (3) are driven to move close to or away from each other, so as to adjust a direction of the electromagnetic wave beam emitted by the two radiation units (3) to the lens (2). The adjusting assembly further comprises two transmission members (5) each threadedly connected with one end of the transmission screw (4), and the two transmission members (5) are arranged corresponding to the two radiation units (3) and connected with the corresponding radiation unit (3) respectively.

2. The lens antenna of claim 1, wherein, When the transmission screw (4) rotates, the two transmission members (5) are driven to move close to or away from each other, so as to drive the two radiation units (3) to move close to or away from each other. Each transmission member (5) has a sliding groove, and an extension direction of each sliding groove is perpendicular to an extension direction of the transmission screw (4). Each radiation unit (3) is connected with a connecting cross rod (6) on a side close to the transmission screw (4), an extension direction of each connecting cross rod (6) is perpendicular to a moving plane of the transmission member (5), and each connecting cross rod (6) is slidingly arranged in the sliding groove of the corresponding transmission member (5). Each radiation unit (3) comprises:

3. The lens antenna of claim 2, wherein, a support frame (7) slidingly arranged on the inner side wall of the antenna shell (1) and used for supporting a reflecting plate (8), the connecting cross rod (6) is connected to a side of the support frame (7) close to the transmission screw (4); the reflecting plate (8) is arranged on a side of the support frame (7) close to the lens (2) and used for reflecting an electromagnetic wave; and a feed source (9) arranged on the reflecting plate (8) and located between the reflecting plate (8) and the lens (2) and used for emitting and receiving an electromagnetic wave. Further comprising a power distribution mechanism (10).

4. The lens antenna of claim 3, wherein, ​ The power distribution mechanism (10) is arranged on the inner side wall of the antenna housing (1) and is electrically connected with the external signal source and the two feed sources (9) respectively, for distributing the external signal source to the two feed sources (9) so that the two feed sources (9) can emit and receive electromagnetic waves.

5. The lens antenna of claim 4, wherein, The power distribution mechanism (10) comprises: A first feeding unit (11) is arranged on the inner side wall of the antenna housing (1) and is electrically connected with the external signal source at one end and with one of the feed sources (9) at the other end, for transmitting part of the signal of the external signal source to the feed source (9) electrically connected therewith; A second feeding unit (12) is slidingly arranged on the inner side wall of the antenna housing (1); the second feeding unit (12) is arranged opposite to and spaced from the first feeding unit (11) to be coupled with the first feeding unit (11) to make the other part of the signal of the external signal source transmitted by the first feeding unit (11) to the second feeding unit (12); the second feeding unit (12) is electrically connected with the other feed source (9) to transmit the other part of the signal of the external signal source to the feed source (9) electrically connected therewith; and A second driving member (13) is arranged on the inner side wall of the antenna housing (1) and is connected with the second feeding unit (12) to drive the second feeding unit (12) to move close to or away from the first feeding unit (11) to adjust the coupling strength between the first feeding unit (11) and the second feeding unit (12) so as to adjust the power distribution ratio of the signal of the external signal source transmitted to the first feeding unit (11) and the second feeding unit (12).

6. The lens antenna of claim 5, wherein, The second feeding unit (12) comprises a coupling portion (14) and a movable portion (15) connected with each other; the coupling portion (14) is arranged opposite to and spaced from the first feeding unit (11) to be coupled with the first feeding unit (11); the feed source (9) electrically connected with the second feeding unit (12) is electrically connected with the coupling portion (14); the movable portion (15) is located on the side of the coupling portion (14) away from the first feeding unit (11); A slide rail (16) is arranged on the inner side wall of the antenna housing (1) corresponding to the position of the movable portion (15); the extending direction of the slide rail (16) is parallel to the moving direction of the second feeding unit (12); the movable portion (15) is slidingly arranged on the slide rail (16); The second driving member (13) is connected with the movable portion (15) to drive the movable portion (15) to move along the slide rail (16) so that the coupling portion (14) moves close to or away from the first feeding unit (11) to adjust the coupling strength between the first feeding unit (11) and the coupling portion (14) so as to adjust the power distribution ratio of the signal of the external signal source transmitted to the first feeding unit (11) and the coupling portion (14).

7. The lens antenna according to claim 6, wherein The movable part (15) is provided with teeth, and the extension direction of the teeth is parallel to the moving direction of the second feeding unit (12); The second driving member (13) is connected with the teeth on the movable part (15) through a regulating gear (20).

8. The lens antenna of claim 3, wherein, The inner side wall of the antenna shell (1) is provided with two arc-shaped guide rails (17), and the two arc-shaped guide rails (17) are correspondingly arranged with the two radiation units (3). The center of each arc-shaped guide rail (17) coincides with the center of the lens (2). Each support frame (7) is slidingly arranged on the corresponding arc-shaped guide rail (17), so that when each support frame (7) slides along the arc-shaped guide rail (17), the center line of the radiation direction of the corresponding feeding source (9) and the median line of the corresponding reflecting plate (8) all pass through the center of the lens (2).

9. The lens antenna according to claim 1, wherein, The lens (2) is a dielectric lens; and / or, The inner part of the antenna shell (1) is concave, the lens (2) is arranged in the concave part, and the lens (2) is fixedly connected with the antenna shell (1) through a support.

10. A communication base station, characterized by comprising: Comprise: A baseband processing unit connected with an external network, used for converting network signals into baseband signals; A radio frequency remote unit electrically connected with the baseband processing unit, used for converting the baseband signals into radio frequency signals and transmitting them; And, The lens antenna according to any one of claims 1-9, electrically connected with the radio frequency remote unit, used for receiving the radio frequency signals and emitting electromagnetic waves outward to realize communication.

Images