Antenna unit and multi-system shared antenna

Abstract

The present disclosure relates to the technical field of antenna communication, and provides an antenna unit and a multi-system shared antenna. The feeding assembly of the antenna unit is arranged on the base assembly, the dielectric substrate is arranged on the feeding assembly, the first radiation arm and the second radiation arm are oppositely arranged on the dielectric substrate along a first direction and are electrically connected with the feeding assembly; the first radiation arm and the second radiation arm are both bent back to form a wave-transparent structure, and the first radiation arm and the second radiation arm are asymmetric structures, so that the first radiation arm and the second radiation arm correspond to the wave-transparent requirements of different frequency bands respectively, and the antenna unit works through the wave-transparent structures of the bent-back first radiation arm and second radiation arm to filter electromagnetic waves of different frequency bands respectively, so as to suppress the coupling of electromagnetic waves of a high frequency band on an antenna unit of a low frequency to generate a high-frequency current, effectively suppress the scattering generated by the mutual coupling of a high-radiation frequency and the antenna unit, improve the distortion of the radiation pattern, and make the antenna meet the wave-transparent needs of different frequency bands.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna communication technology, and in particular to an antenna unit and a multi-system shared antenna. Background Art

[0002] With the continuous development of mobile communication technology and increasingly fierce market competition, the system has put forward higher requirements for base station antennas, such as high integration, high radiation efficiency, and high index requirements.

[0003] The ever-increasing demands on modern base station antennas create increasingly complex internal electromagnetic environments. For example, if radiating elements with different operating frequencies (690-960MHz, 1400-2690MHz, and 3300-4200MHz) are installed on the same reflector, the mutual shielding of antenna elements from different systems can severely degrade and distort the radiation pattern of the antenna elements. Summary of the Invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides an antenna unit and a multi-system shared antenna.

[0005] The present disclosure provides an antenna unit, comprising a dielectric substrate, a feeding assembly, a base assembly, a first radiating arm and a second radiating arm;

[0006] The feeding assembly is arranged on the base assembly, the dielectric substrate is arranged on the feeding assembly, the first radiating arm and the second radiating arm are arranged on the dielectric substrate opposite to each other along a first direction and are electrically connected to the feeding assembly;

[0007] The first radiating arm and the second radiating arm are both bent and folded back to form a wave-transmitting structure, and the first radiating arm and the second radiating arm are asymmetric structures, so that the first radiating arm and the second radiating arm respectively correspond to the wave-transmitting requirements of different frequency bands.

[0008] Optionally, the first radiation arm includes a plurality of first connection monomers connected in sequence, and the second radiation arm includes a plurality of second connection monomers connected in sequence;

[0009] The first radiating arm corresponds to the wave transmission requirement of the first frequency band, the second radiating arm corresponds to the wave transmission requirement of the second frequency band, and the first frequency band is larger than the second frequency band, the length of at least part of the first connecting monomers is smaller than the length of the second connecting monomers, and the number of the first connecting monomers is greater than the number of the second connecting monomers.

[0010] Optionally, the length of the first connecting monomer is 0.2 to 0.5 times the wavelength of the center frequency point of the first frequency band, and the length of the second connecting monomer is 0.2 to 0.5 times the wavelength of the center frequency point of the second frequency band.

[0011] Optionally, the operating frequency band of the antenna unit is a third frequency band, and the third frequency band, the second frequency band and the first frequency band are all different frequency bands;

[0012] A difference between a circumference of the first radiation arm along its extending direction and a circumference of the second radiation arm along its extending direction is less than 0.1 times a wavelength of a center frequency point of the third frequency band.

[0013] Optionally, the first radiating arm and the second radiating arm are both polygonal structures, and the number of sides of the first radiating arm and the number of sides of the second radiating arm are equal;

[0014] A plurality of first connecting units are distributed on a plurality of sides of the first radiation arm, and a plurality of second connecting units are distributed on a plurality of sides of the second radiation arm.

[0015] Optionally, the lengths of the plurality of first linking monomers are equal, the lengths of the plurality of second linking monomers are equal, and the lengths of the plurality of first linking monomers are all smaller than the lengths of the plurality of second linking monomers;

[0016] Alternatively, the length of some of the first linking monomers is greater than the length of the remaining first linking monomers, the length of some of the second linking monomers is less than the length of the remaining second linking monomers, and the length of some of the first linking monomers is equal to the length of some of the second linking monomers.

[0017] Optionally, the number of the first radiation arm and the number of the second radiation arm are both two;

[0018] The two first radiation arms and the two second radiation arms are sequentially arranged along the second direction, and the two first radiation arms and the two second radiation arms are arranged opposite to each other along the first direction, and the first direction is perpendicular to the second direction.

[0019] Optionally, the first radiating arm and the second radiating arm are both located on the same side surface of the dielectric substrate.

[0020] The present disclosure further provides a multi-system shared antenna, comprising a reflector, a first radiation unit, a second radiation unit, and the antenna unit as described above, mounted on the reflector;

[0021] The radiation frequency bands of the first radiation unit and the second radiation unit are different frequency bands. The first radiation unit is arranged adjacent to the first radiation arm, and the second radiation unit is arranged adjacent to the second radiation arm. At least a portion of the projection of the first radiation unit on the dielectric substrate overlaps with the first radiation arm, and at least a portion of the projection of the second radiation unit on the dielectric substrate overlaps with the second radiation arm.

[0022] Optionally, the number of the first radiation unit, the second radiation unit, and the antenna unit are all multiple;

[0023] The reflective plate includes a first area and a second area sequentially arranged along a first direction, a plurality of the first radiation units are arranged in the first area, and a plurality of the second radiation units are arranged in the second area;

[0024] The plurality of antenna units are spaced apart along a second direction at the boundary between the first area and the second area, the first radiation arm is located in the first area, the second radiation arm is located in the second area, and the first direction is perpendicular to the second direction.

[0025] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0026] The antenna unit and multi-system shared antenna provided by the embodiments of the present disclosure include a dielectric substrate, a feeding assembly, a base assembly, a first radiating arm, and a second radiating arm; the feeding assembly is arranged on the base assembly, the dielectric substrate is arranged on the feeding assembly, and the first radiating arm and the second radiating arm are arranged on the dielectric substrate in a first direction relative to each other and are electrically connected to the feeding assembly; the first radiating arm and the second radiating arm are both bent and folded back to form a wave-transmitting structure, and the first radiating arm and the second radiating arm are asymmetric structures, that is, the wave-transmitting structure formed by the bending and folding of the first radiating arm is different from the wave-transmitting structure formed by the bending and folding of the second radiating arm, and are asymmetric structures, so that the first radiating arm and the second radiating arm respectively correspond to the wave-transmitting requirements of different frequency bands. When the antenna unit is in operation, the wave-transmitting structures of the first radiating arm and the second radiating arm are used to filter electromagnetic waves of different frequency bands respectively, thereby preventing electromagnetic waves of high frequency bands from coupling with the low-frequency antenna unit to generate high-frequency current, effectively suppressing scattering caused by the mutual coupling of high radiation frequency and the antenna unit, improving the distortion of the radiation pattern, and enabling the antenna to meet the wave-transmitting requirements of different frequency bands. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0028] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of the antenna unit according to an embodiment of the present disclosure;

[0030] Figure 2 A top view of an antenna unit according to an embodiment of the present disclosure;

[0031] Figure 3 A top view of another antenna unit according to an embodiment of the present disclosure;

[0032] Figure 4 A top view of another antenna unit according to an embodiment of the present disclosure;

[0033] Figure 5 This is a structural diagram of a multi-system shared antenna according to an embodiment of the present disclosure;

[0034] Figure 6 A top view of a multi-system shared antenna according to an embodiment of the present disclosure;

[0035] Figure 7 This is a structural diagram of another multi-system shared antenna according to an embodiment of the present disclosure;

[0036] Figure 8 This is a top view of another multi-system shared antenna described in an embodiment of the present disclosure.

[0037] Among them, 1. dielectric substrate; 2. feeding component; 3. base component; 41. first radiating arm; 411. first connecting monomer; 42. second radiating arm; 421. second connecting monomer; 5. first radiating unit; 6. second radiating unit; 7. reflecting plate; 71. first area; 72. second area. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0040] Currently, antennas have multiple operating frequencies, such as 690-960MHz, 1400-2690MHz, and 3300-4200MHz. Existing signal stations usually install antennas with different operating frequencies together. When the three antennas with different frequencies are working, the high-frequency radiating unit and the low-frequency radiating unit are mutually coupled. That is, when the electromagnetic waves radiated by the high-frequency radiating unit are irradiated on the low-frequency radiating unit, an induced current will be generated on the low-frequency radiating unit, causing the radiation pattern of the high-frequency radiating unit to be distorted. The radiation pattern will have a beam depression, the beam width may be too wide or too narrow, the cross-polarization will be increased, the front-to-back ratio will deteriorate, and the antenna radiation efficiency will also be reduced, affecting the working state of the antenna.

[0041] Based on this, an embodiment of the present disclosure provides an antenna unit, which, through the asymmetric arrangement of the first radiating arm 41 and the second radiating arm 42 on the dielectric substrate 1, makes the first radiating arm 41 and the second radiating arm 42 correspond to different frequencies respectively, so that when the electromagnetic waves of the corresponding frequencies pass through the dielectric substrate 1, the first radiating arm 41 and the second radiating arm 42 bend back to form a wave-transmitting structure, and the first radiating arm 41 and the second radiating arm 42 filter the electromagnetic waves in the high-frequency band, that is, it can prevent the electromagnetic waves in the high-frequency band from coupling on the low-frequency antenna unit to generate high-frequency current, thereby avoiding mutual coupling between the antenna emitting high-frequency electromagnetic waves and the antenna emitting low-frequency electromagnetic waves, thereby effectively suppressing high-frequency scattering and improving high-frequency directional pattern distortion.

[0042] Reference Figures 1 to 8 As shown, an embodiment of the present disclosure provides an antenna unit, comprising a dielectric substrate 1, a feeding assembly 2, a base assembly 3, a first radiating arm 41, and a second radiating arm 42. The feeding assembly 2 is disposed on the base assembly 3, the dielectric substrate 1 is disposed on the feeding assembly 2, the first radiating arm 41 and the second radiating arm 42 are disposed on the dielectric substrate 1 relative to each other along a first direction, and are electrically connected to the feeding assembly 2. The first radiating arm 41 and the second radiating arm 42 are both bent and folded back to form a wave-transmitting structure, and the first radiating arm 41 and the second radiating arm 42 are asymmetric structures, that is, the wave-transmitting structure formed by the bending and folding of the first radiating arm 41 is different from the wave-transmitting structure formed by the bending and folding of the second radiating arm 42, and are asymmetric structures, so that the first radiating arm 41 and the second radiating arm 42 respectively correspond to the wave-transmitting requirements of different frequency bands.

[0043] Specifically, the dielectric substrate 1 can be selected as a rectangular or square panel, the dielectric substrate 1 can be selected to be made of insulating material, the feeding assembly 2 can be selected to be set at the center point of the dielectric substrate 1, and the feeding assembly 2 and the base assembly 3 can be connected by bolts. Of course, the feeding assembly 2 and the base assembly 3 can also be connected by a snap-on method. Of course, it is not limited to the middle part of the dielectric substrate 1 having a through hole, the dielectric substrate 1 and the base assembly 3 are connected, the feeding assembly 2 is set at the center of the dielectric substrate 1, and the feeding assembly 2 is connected to the base assembly 3 through the through hole on the dielectric substrate 1; when the dielectric substrate 1 is square, the first direction can be selected as a direction parallel to an edge of the dielectric substrate 1; when the dielectric substrate 1 is rectangular, the first direction can be selected as the length direction of the dielectric substrate 1, and the positions of the first radiating arm 41 and the second radiating arm 42 can be selected to be symmetrical about the center point of the dielectric substrate 1 along the first direction.

[0044] The above-mentioned first radiating arm 41 and second radiating arm 42 can both be made of conductive linear structures. The two ends of the first radiating arm 41 are respectively electrically connected to the feeding component 2 to form a closed ring structure, and the first radiating arm 41 bends back and forth to form a plurality of bending segments, so that the closed ring structure with multiple bending segments formed by the first radiating arm 41 and the feeding component 2 serves as a wave-transmitting structure. The two ends of the second radiating arm 42 are respectively electrically connected to the feeding component 2 to form a closed ring structure, and the second radiating arm 42 bends back and forth to form a plurality of bending segments, so that the closed ring structure with multiple bending segments formed by the second radiating arm 42 and the feeding component 2 serves as a wave-transmitting structure. When electromagnetic waves pass through the dielectric substrate 1, since the first radiating arm 41 and the second radiating arm 42 are both ring structures, the area enclosed by the first radiating arm 41 and the second radiating arm 42 can allow the electromagnetic waves to pass through.

[0045] The bending sections of the first and second radiating arms 41, 42 can be selected as one or more of an S-shaped curve section, a Z-shaped curve section, and a square-wave curve section. As long as the bending sections of the first and second radiating arms 41, 42 include adjacent and parallel line segments, when corresponding electromagnetic waves pass through the first and second radiating arms 41, 42, the currents in the parallel line segments of the bending section of the first radiating arm 41 are approximately equal in amplitude and opposite in phase, and the currents in the parallel line segments of the bending section of the second radiating arm 42 are approximately equal in amplitude and opposite in phase, thereby suppressing scattering of electromagnetic waves passing through the bending sections of the first and second radiating arms 41, 42 and minimizing the influence of the antenna unit on the electromagnetic waves corresponding to the first and second radiating arms 41, 42. The circumference of the first radiating arm 41 and the circumference of the second radiating arm 42 can be selected to be equal to or substantially the same.

[0046] The first radiating arm 41 and the second radiating arm 42 have an asymmetric structure along the first direction. The shape of the bending section of the first radiating arm 41 can be selected to be different from the shape of the bending section of the second radiating arm 42. When the first frequency band is greater than the second frequency band, the number of bending sections on the first radiating arm 41 can be selected to be greater than the number of bending sections on the second radiating arm 42, and the length of the bending section on the first radiating arm 41 can be selected to be less than the length of the bending section of the second radiating arm 42. This allows the first radiating arm 41 to match the first frequency band with a higher frequency, thereby better eliminating the impact of electromagnetic waves in the first frequency band passing through the first radiating arm 41. This allows the second radiating arm 42 to match the second frequency band with a lower frequency but longer wavelength, thereby better eliminating the impact of electromagnetic waves in the second frequency band passing through the second radiating arm 42. The frequency band corresponding to the first radiating arm 41 can be selected to be 3300-4200 MHz, and the frequency band corresponding to the second radiating arm 42 can be selected to be 1400-2690 MHz.

[0047] During specific use, the antenna unit is installed in an antenna with multiple operating frequency bands. The first radiating arm 41 on the dielectric substrate 1 corresponds to the antenna covering one frequency band, and the second radiating arm 42 on the dielectric substrate 1 corresponds to the antenna covering another frequency band. When the antenna with multiple operating frequency bands is operating, electromagnetic waves in one frequency band pass through the first radiating arm 41 and propagate through the dielectric substrate 1. The induced current generated by the electromagnetic waves when passing through the first radiating arm 41 is suppressed due to the reciprocating bending structure, and the induced current generated by the electromagnetic waves in the other frequency band when passing through the second radiating arm 42 is suppressed due to the reciprocating bending structure of the second radiating arm 42. The first radiating arm 41 and the second radiating arm 42 can prevent electromagnetic waves in the high frequency band from coupling with the low frequency antenna unit to generate high frequency current, thereby avoiding mutual coupling between the antenna emitting high frequency electromagnetic waves and the antenna emitting low frequency electromagnetic waves, thereby effectively suppressing scattering caused by the mutual coupling between the high radiation frequency and the antenna unit, improving the distortion of the radiation pattern, and improving the stability and accuracy of the antenna unit when operating in the antenna with multiple operating frequency bands.

[0048] In the antenna unit provided by the embodiment of the present disclosure, the first radiation arm 41 and the second radiation arm 42 are both bent and folded back to form a wave-transmitting structure, and the first radiation arm 41 and the second radiation arm 42 are asymmetric structures, so that the first radiation arm 41 and the second radiation arm 42 respectively correspond to the wave-transmitting requirements of different frequency bands. When the antenna unit is working, the electromagnetic waves of different frequency bands are filtered respectively through the bent and folded wave-transmitting structures of the first radiation arm 41 and the second radiation arm 42, thereby preventing the electromagnetic waves in the high-frequency band from coupling with the low-frequency antenna unit to generate high-frequency current, effectively suppressing the scattering caused by the mutual coupling of the high radiation frequency and the antenna unit, improving the distortion of the radiation pattern, and enabling the antenna to meet the wave-transmitting requirements of different frequency bands.

[0049] Reference Figure 1 、 Figure 2、 Figure 3 、 Figure 4 As shown, in some embodiments, the first radiating arm 41 includes a plurality of sequentially connected first connecting monomers 411, and the second radiating arm 42 includes a plurality of sequentially connected second connecting monomers 421. Specifically, the first connecting monomers 411 and the second connecting monomers 421 can be selected from one or more of a "J"-shaped curve segment, an S-shaped curve segment, a Z-shaped curve segment, and a square wave curve segment.

[0050] Among them, the first radiation arm 41 corresponds to the wave transmission requirement of the first frequency band, the second radiation arm 42 corresponds to the wave transmission requirement of the second frequency band, and the first frequency band is larger than the second frequency band. The length of at least part of the first connection monomer 411 is smaller than the length of the second connection monomer 421, and the number of the first connection monomers 411 is greater than the number of the second connection monomers 421.

[0051] Specifically, the first connecting monomer 411 and the second connecting monomer 421 can be selected to include two radiating sections and a transition section, the two radiating sections are parallel to each other and equal in length, the transition section is perpendicular to the two radiating sections, and the two ends of the transition section are respectively connected to the two radiating sections, and the transition section is located at the end of the same side of the two radiating sections, so that the first connecting monomer 411 and the second connecting monomer 421 both form a "J"-shaped structure; the first radiating arm 41 and the second radiating arm 42 can be selected to be bent to form the first connecting monomer 411 and the second connecting monomer 421 respectively.

[0052] It should be noted that, taking the example of the first connecting monomer 411 and the second connecting monomer 421 both forming a "J"-shaped structure, the first connecting monomer 411 includes two radiating segments arranged parallel to each other and a transition segment connected between the two radiating segments, and the length of the first connecting monomer 411 is the sum of the lengths of the two radiating segments and the transition segment connected between the two radiating segments; the second connecting monomer 421 includes two radiating segments arranged parallel to each other and a transition segment connected between the two radiating segments, and the length of the second connecting monomer 421 is the sum of the lengths of the two radiating segments and the transition segment connected between the two radiating segments.

[0053] When the above-mentioned first radiation arm 41 and second radiation arm 42 are both polygonal ring structures, it is possible to choose to bend on part of the edge of the ring structure of the first radiation arm 41 to form multiple first connection monomers 411, and bend on part of the edge of the ring structure of the second radiation arm 42 to form one or more second connection monomers 421. Of course, it is also possible to choose to set multiple first connection monomers 411 on each edge of the first radiation arm 41, and set one or more second connection monomers 421 on each edge of the second radiation arm 42.

[0054] The length of the above-mentioned first connecting monomer 411 can be selected as the sum of the lengths of the two radial sections and one transition section of the first connecting monomer 411, and the length of the second connecting monomer 421 can be selected as the sum of the lengths of the two radial sections and one transition section of the first connecting monomer 411; the length of all the first connecting monomers 411 can be selected to be smaller than the length of the second connecting monomer 421, and of course, the length of some of the first connecting monomers 411 can be equal to the length of the second connecting monomer 421, and the length of some of the first connecting monomers 411 can be smaller than the length of the second connecting monomer 421.

[0055] The first frequency band corresponding to the above-mentioned first radiation arm 41 is greater than the second frequency band corresponding to the second radiation arm 42. Since the frequency band of the electromagnetic waves passing through the first radiation arm 41 area is high, a larger number of first connection monomers 411 are required to have a better suppressive effect on the scattering of electromagnetic waves passing through the first radiation arm 41 due to the induced current; since the frequency band of the electromagnetic waves passing through the second radiation arm 42 area is lower, a smaller number of second connection monomers 421 can have a better suppressive effect on the induced current, and the wavelength of the second frequency band is longer. The length of the second connection monomer 421 is greater than the length of the first connection monomer 411, which can better match the electromagnetic waves passing through the second radiation arm 42, so that multiple second connection monomers 421 have a better suppressive effect on the scattering of electromagnetic waves passing through the second radiation arm 42 due to the induced current; the first frequency band can be selected as 3300-4200MHz, and the second frequency band can be selected as 1400-2690MHz.

[0056] By setting the first radiation arm 41 to include a plurality of first connection monomers 411 connected in sequence, and the second radiation arm 42 to include a plurality of second connection monomers 421 connected in sequence, the current is approximately equal in amplitude and opposite in phase when passing through the mutually parallel parts of the first connection monomer 411 and the second connection monomer 421, so as to eliminate the influence of electromagnetic wave scattering caused by the induced current generated by the first connection monomer 411 and the second connection monomer 421; the first radiation arm 41 corresponds to the wave transmission requirement of the first frequency band, and the second radiation arm 42 corresponds to the wave transmission requirement of the second frequency band, and the first frequency band is greater than the second frequency band, the length of at least part of the first connection monomer 411 is less than the length of the second connection monomer 421, and the number of the first connection monomer 411 The number of the second connecting monomers 411 is greater than that of the second connecting monomers 421. Since the first frequency band is greater than the second frequency band, more first connecting monomers 411 are required to match the first frequency band to eliminate the electromagnetic wave scattering caused by the induced current when the electromagnetic waves in the first frequency band pass through the first radiation arm 41. The wavelength of the second frequency band is longer, but the frequency is lower, so the number of the second connecting monomers 421 is smaller and the length is longer to match the second frequency band to eliminate the electromagnetic wave scattering caused by the induced current when the electromagnetic waves in the second frequency band pass through the second radiation arm 42. Ultimately, the first connecting monomers 411 and the second connecting monomers 421 respectively have good suppression effects on the radiation scattering of the electromagnetic waves in the first frequency band and the second frequency band when they pass through the dielectric substrate 1.

[0057] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, in some embodiments, the length of the first connecting monomer 411 is 0.2 to 0.5 times the wavelength of the center frequency point of the first frequency band, and the length of the second connecting monomer 421 is 0.2 to 0.5 times the wavelength of the center frequency point of the second frequency band.

[0058] Specifically, the center frequency point can be selected as the frequency corresponding to the center point of the frequency band, that is, 20% to 50% of the wavelength of the frequency corresponding to the center point of the first frequency band is the length size range of the first connecting monomer 411, and 20% to 50% of the wavelength of the frequency corresponding to the center point of the second frequency band is the length size range of the second connecting monomer 421. The length sizes of multiple first connecting monomers 411 can be selected to be equal, and of course the length of some first connecting monomers 411 can also be selected to be greater than the length of some first connecting monomers 411. The length sizes of multiple second connecting monomers 421 can also be selected to be equal, and of course the length size of some second connecting monomers 421 can also be selected to be greater than the length size of the remaining second connecting monomers 421.

[0059] By setting the length of the first connecting monomer 411 to 0.2 to 0.5 times the wavelength of the center frequency point of the first frequency band, and the length of the second connecting monomer 421 to 0.2 to 0.5 times the wavelength of the center frequency point of the second frequency band, the length of the first connecting monomer 411 is suitable for eliminating the influence of the electromagnetic waves in the first frequency band, and the length of the second connecting monomer 421 is suitable for eliminating the influence of the electromagnetic waves in the second frequency band, so that the first radiation arm 41 and the second radiation arm 42 can respectively adapt to the electromagnetic waves in the first frequency band and the second frequency band.

[0060] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, in some embodiments, the operating frequency band of the antenna unit is the third frequency band, and the third frequency band, the second frequency band and the first frequency band are all different frequency bands; the difference between the circumference of the first radiating arm 41 along its extension direction and the circumference of the second radiating arm 42 along its extension direction is less than 0.1 times the wavelength of the center frequency point of the third frequency band.

[0061] Specifically, the third frequency band can be selected as 690-960MHz, so that the third frequency band is smaller than the first frequency band and the second frequency band. The difference between the total length of the first radiation arm 41 and the total length of the second radiation arm 42 can be selected as a set difference, and the set difference is less than 0.1 times the wavelength of the center frequency point of the third frequency band, so that the length dimension of the first radiation arm 41 and the length dimension of the second radiation arm are equal or have a smaller difference.

[0062] By setting the operating frequency band of the antenna unit to the third frequency band, the third frequency band, the second frequency band and the first frequency band are all different frequency bands; the difference between the circumference of the first radiating arm 41 along its extension direction and the circumference of the second radiating arm 42 along its extension direction is less than 0.1 times the wavelength of the center frequency point of the third frequency band, so that the length of the first radiating arm 41 and the length of the second radiating arm 42 are basically equal, which is conducive to simultaneously controlling the first radiating arm 41 and the second radiating arm 42, and can make the occupied areas of the first radiating arm 41 and the second radiating arm 42 similar, so as to facilitate the uniform arrangement of the first radiating arm 41 and the second radiating arm 42 on the dielectric substrate 1.

[0063] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, in some embodiments, the first radiation arm 41 and the second radiation arm 42 are both polygonal structures, and the number of sides of the first radiation arm 41 and the second radiation arm 42 is equal; multiple first connection monomers 411 are distributed on multiple sides of the first radiation arm 41, and multiple second connection monomers 421 are distributed on multiple sides of the second radiation arm 42.

[0064] Specifically, the first radiation arm 41 and the second radiation arm 42 can be selected to be polygonal ring structures, and multiple first connection monomers 411 are arranged at intervals on at least part of the edges of the polygonal ring structure, and multiple second connection monomers 421 are arranged at intervals on at least part of the edges of the polygonal ring structure of the second radiation arm 42.

[0065] The first radiation arm 41 and the second radiation arm 42 can be selected to be a polygonal structure with seven sides, such as Figure 2 As shown, the first connection monomer 411 can be selected not to be provided on the two sides where the first radiation arm 41 is connected to the feeding component 2, and multiple first connection monomers 411 are arranged at intervals on each of the remaining sides. The spacing between adjacent first connection monomers 411 on at least one side of the first radiation arm 41 is greater than the spacing between adjacent first connection monomers 411 on the remaining sides, and the lengths of the multiple first connection monomers 411 on the first radiation arm 41 are equal; the first connection monomer 411 is not provided on the two sides where the second radiation arm 42 is connected to the feeding component 2, and a first connection monomer 411 is provided on each of the remaining sides, and the second connection monomer 421 is provided in the middle of the side of the second radiation arm 42.

[0066] The first radiation arm 41 and the second radiation arm 42 can be selected to be a polygonal structure with seven sides, such as Figure 3 As shown, a plurality of first connection monomers 411 can be optionally arranged at intervals on each side of the first radiation arm 41, and the length dimension of the first connection monomers 411 on the two sides where the first radiation arm 41 is connected to the feeding component 2 can be selected to be greater than the length dimension of the first connection monomers 411 on the remaining sides of the first radiation arm 41, the radiation sections of adjacent first connection monomers 411 on the two sides where the first radiation arm 41 is connected to the feeding component 2 have an angle of 60° with the side of the first radiation arm 41, and the radiation sections of the first connection monomers 411 are vertically arranged on the remaining sides of the first radiation arm 41; a second connection monomer 421 can be optionally arranged on each side of the second radiation arm 42, the length dimension of the second connection monomers 421 on the two sides where the second radiation arm 42 is connected to the feeding component 2 is less than the length dimension of the second connection monomers 421 on the remaining sides, and the second connection monomers 421 are arranged in the middle of the side of the second radiation arm 42.

[0067] The first radiation arm 41 and the second radiation arm 42 can be selected to have a polygonal structure with seven sides, and the polygonal structure with seven sides extends along the diagonal direction of the dielectric substrate 1, such as Figure 4As shown, the first connection monomer 411 is not provided on the two sides where the first radiation arm 41 is connected to the feeding component 2, and multiple first connection monomers 411 are arranged at intervals on each of the remaining sides. The spacing between adjacent first connection monomers 411 on the side of the first radiation arm 41 can be selected to be equal, and the length dimensions of all first connection monomers 411 can be selected to be equal; the first connection monomer 411 is not provided on the two sides where the second radiation arm 42 is connected to the feeding component 2, and a first connection monomer 411 is provided on each of the remaining sides, the length dimensions of all second connection monomers 421 are equal, and the second connection monomer 421 is provided in the middle of the side of the second radiation arm 42.

[0068] By setting the first radiation arm 41 and the second radiation arm 42 to be polygonal structures, and the number of sides of the first radiation arm 41 and the second radiation arm 42 is equal; multiple first connection monomers 411 are distributed on multiple sides of the first radiation arm 41, and multiple second connection monomers 421 are distributed on multiple sides of the second radiation arm 42, so that the multiple first connection monomers 411 on the first radiation arm 41 can be distributed more evenly, so that the first connection monomers 411 on the first radiation arm 41 can better suppress the scattering generated when high-frequency electromagnetic waves pass through, and the second connection monomers 421 on the second radiation arm 42 can be distributed more evenly, so that the second connection monomers 421 on the second radiation arm 42 can better suppress the scattering generated when high-frequency electromagnetic waves pass through.

[0069] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, the lengths of the plurality of first connecting monomers 411 are equal, the lengths of the plurality of second connecting monomers 421 are equal, and the lengths of the plurality of first connecting monomers 411 are all less than the lengths of the plurality of second connecting monomers 421;

[0070] Specifically, the lengths of all the first connecting monomers 411 on the first radiation arm 41 and the lengths of all the second connecting monomers 421 on the second radiation arm 42 can be selected to be equal, so as to facilitate bending at various locations of the first radiation arm 41 to produce the first connecting monomers 411 and to facilitate bending at various locations of the second radiation arm 42 to produce the second connecting monomers 421.

[0071] By setting the lengths of the multiple first connection monomers 411 to be equal, the lengths of the multiple second connection monomers 421 to be equal, and the lengths of the multiple first connection monomers 411 are all smaller than the lengths of the multiple second connection monomers 421, it is convenient to bend the first connection monomers 411 and the second connection monomers 421 on the first radiation arm 41 and the second radiation arm 42 respectively.

[0072] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, the length of some first connecting monomers 411 is greater than the length of the remaining first connecting monomers 411, the length of some second connecting monomers 421 is less than the length of the remaining second connecting monomers 421, and the length of some first connecting monomers 411 is equal to the length of some second connecting monomers 421.

[0073] Specifically, the length dimension of the first connecting monomer 411 close to the feeding component 2 can be selected to be larger than the length dimension of the remaining first connecting monomers 411, the length dimension of the second connecting monomer 421 close to the feeding component 2 can be smaller than the length dimension of the remaining second connecting monomers 421, and the length dimension of the first connecting monomer close to the feeding component 2 can be selected to be equal to the length dimension of the second connecting monomer 421 close to the feeding component 2; the first connecting monomer 411 and the second connecting monomer 421 with suitable length dimensions are respectively provided at positions where the first radiating arm 41 and the second radiating arm 42 are prone to generate larger induced currents, so that the first radiating arm 41 and the second radiating arm 42 can better suppress the scattering caused by the induced current when high-frequency electromagnetic waves pass through.

[0074] By setting the length of some first connecting monomers 411 to be greater than the length of the remaining first connecting monomers 411, the length of some second connecting monomers 421 to be less than the length of the remaining second connecting monomers 421, and the length of some first connecting monomers 411 to be equal to the length of some second connecting monomers 421, the first radiation arm 41 and the second radiation arm 42 are provided with first connecting monomers 411 and second connecting monomers 421 of appropriate lengths at positions where a larger induced current is generated, so that the first radiation arm 41 and the second radiation arm 42 have better suppression effects when facing the passage of high-frequency electromagnetic waves, thereby improving the suppression effects of the first radiation arm 41 and the second radiation arm 42 on the scattering caused by the induced current when the high-frequency electromagnetic waves pass through.

[0075] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, the number of the first radiation arms 41 and the number of the second radiation arms 42 are both two; the two first radiation arms 41 and the two second radiation arms 42 are arranged in sequence along the second direction, and the two first radiation arms 41 and the two second radiation arms 42 are arranged one by one opposite to each other along the first direction, and the first direction is perpendicular to the second direction.

[0076] Specifically, it can be selected that the two first radiating arms 41 are arranged on the dielectric substrate 1 along a direction perpendicular to the first direction, and the two second radiating arms 42 are arranged on the dielectric substrate 1 along the direction perpendicular to the first direction, so that the two first radiating arms 41 and the two second radiating arms 42 correspond one to one along the first direction, so that the square or rectangular dielectric substrate 1 is evenly divided into four areas with the center point, and two first radiating arms 41 and two second radiating arms 42 are respectively provided in the four areas, thereby improving the utilization rate of the dielectric substrate 1.

[0077] By setting the number of the first radiation arms 41 and the second radiation arms 42 to be two, the two first radiation arms 41 and the two second radiation arms 42 are arranged in sequence along the second direction, and the two first radiation arms 41 and the two second radiation arms 42 are arranged one by one opposite to each other along the first direction, and the first direction is perpendicular to the second direction, so that the multiple first radiation arms 41 and the multiple second radiation arms 42 can be distributed in an orderly manner on the dielectric substrate 1, thereby improving the utilization rate of the area of ​​the dielectric substrate 1, so that when electromagnetic waves of different frequency bands pass through the dielectric substrate 1, the two first radiation arms 41 and the two second radiation arms 42 can suppress the coupling caused by electromagnetic wave scattering when the electromagnetic waves pass through the dielectric substrate 1.

[0078] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, the first radiating arm 41 and the second radiating arm 42 are both located on the same side surface of the dielectric substrate 1 .

[0079] Specifically, the base component 3 can be selected to be connected to one side of the dielectric substrate 1, the side of the dielectric substrate 1 connected to the base component 3 is the back side, and the side of the dielectric substrate 1 away from the base component 3 is the front side. The first radiating arm 41, the second radiating arm 42 and the feeding component 2 can be selected to be arranged on the front side of the dielectric substrate 1. Of course, the first radiating arm 41 and the second radiating arm 42 can also be selected to be arranged on the back side of the dielectric substrate 1.

[0080] By locating the first radiating arm 41 and the second radiating arm 42 on the same side surface of the dielectric substrate 1 , the installation operation of the first radiating arm 41 and the second radiating arm 42 on the dielectric substrate 1 is simplified.

[0081] When the antenna unit provided by the present disclosure is used, the antenna unit is installed in an antenna with multiple operating frequency bands. The first radiating arm 41 on the dielectric substrate 1 corresponds to the antenna covering the first frequency band, and the second radiating arm 42 on the dielectric substrate 1 corresponds to the antenna covering the second frequency band. When the antenna with multiple operating frequency bands is working, the electromagnetic waves in the first frequency band pass through the dielectric substrate 1 and pass through the first radiating arm 41. Under the action of the multiple first connecting monomers 411 of the first radiating arm 41, the electromagnetic wave scattering caused by the induced current on the first radiating arm 41 of the electromagnetic waves in the first frequency band is suppressed, and the electromagnetic waves in the second frequency band pass through the dielectric substrate. The first and second radiation arms 41 and 42 respectively pass through the second radiation arm 42. Under the action of the plurality of second connecting monomers 421 of the second radiation arm 42, the electromagnetic wave scattering caused by the induced current on the second radiation arm 42 in the second frequency band is suppressed. This enables the first and second radiation arms 41 and 42 to prevent the electromagnetic waves in the higher first and second frequency bands from coupling with the antenna unit in the third frequency band to generate high-frequency current. This further avoids mutual coupling between the antenna emitting electromagnetic waves in the first and second frequency bands and the antenna emitting electromagnetic waves in the third frequency band. This effectively suppresses scattering caused by the mutual coupling between the high radiation frequency and the antenna unit, thereby improving the distortion of the radiation pattern.

[0082] Reference Figures 1 to 8 As shown, an embodiment of the present disclosure provides a multi-system shared antenna, including a reflector 7 and a first radiating unit 5, a second radiating unit 6 and the antenna unit described in any of the above embodiments, which are installed on the reflector 7; the radiation frequency bands of the first radiating unit 5 and the second radiating unit 6 are different frequency bands, the first radiating unit 5 is arranged adjacent to the first radiating arm 41, and the second radiating unit 6 is arranged adjacent to the second radiating arm 42, and at least a portion of the projection of the first radiating unit 5 on the dielectric substrate 1 overlaps with the first radiating arm 41, and at least a portion of the projection of the second radiating unit 6 on the dielectric substrate 1 overlaps with the second radiating arm 42.

[0083] Specifically, the reflector 7 can be selected as a rectangular or square plate, and the first radiation unit 5, the second radiation unit 6 and the antenna unit can be installed on one side of the reflector 7. The antenna unit can be installed on the reflector 7 through a base assembly, so that there is a certain distance between the dielectric substrate 1 and the reflector 7, so that there is no interference between the dielectric substrate 1 and the first radiation unit 5 and the second radiation unit 6, and when the reflector 7 is placed on the ground, the dielectric substrate 1 is located above the first radiation unit 5 and the second radiation unit 6, so that the dielectric substrate 1 can at least partially cover the first radiation unit 5 and the second radiation unit 6; the electromagnetic waves emitted by the first radiation unit 5 can be selected to be within the frequency band of 3300-4200MHz, and the electromagnetic waves emitted by the second radiation unit 6 can be selected to be within the frequency band of 1400-2690MHz.

[0084] like Figure 5 and Figure 6 As shown, an antenna unit and multiple first radiation units 5 and multiple second radiation units 6 can be optionally set on the above-mentioned reflection plate 7, the antenna unit is set in the middle of the reflection plate 7, the multiple first radiation units 5 are set on the side of the reflection plate 7 adjacent to the first radiation unit 5, and the multiple second radiation units 6 are set on the side of the reflection plate 7 adjacent to the second radiation unit 6. The projection of at least part of the first radiation unit 5 on the dielectric substrate 1 overlaps with the first radiation arm 41, and the projection of at least part of the second radiation unit 6 on the dielectric substrate 1 overlaps with the second radiation arm 42.

[0085] The above-mentioned first radiating unit 5 is arranged adjacent to the first radiating arm 41, and the second radiating unit 6 is arranged adjacent to the second radiating arm 42. In the direction of the reflector 7 toward the dielectric substrate 1, the first radiating arm 41 at least partially covers the first radiating unit 5, and the second radiating arm 42 at least partially covers the second radiating unit 6. Therefore, when the electromagnetic waves emitted by the first radiating unit 5 pass through the dielectric substrate 1, the first radiating arm 41 can suppress the scattering caused by the mutual coupling between the electromagnetic waves emitted by the first radiating unit 5 and the antenna unit. When the electromagnetic waves emitted by the second radiating unit 6 pass through the dielectric substrate 1, the second radiating arm 42 can suppress the scattering caused by the mutual coupling between the electromagnetic waves emitted by the second radiating unit 6 and the antenna unit.

[0086] The multi-system shared antenna provided by the embodiment of the present disclosure includes a reflector 7 and a first radiation unit 5, a second radiation unit 6 and the antenna unit as described above, which are mounted on the reflector 7; the radiation frequency bands of the first radiation unit 5 and the second radiation unit 6 are different frequency bands, the first radiation unit 5 is arranged adjacent to the first radiation arm 41, and the second radiation unit 6 is arranged adjacent to the second radiation arm 42, and at least a portion of the projection of the first radiation unit 5 on the dielectric substrate 1 overlaps with the first radiation arm 41, and at least a portion of the projection of the second radiation unit 6 on the dielectric substrate 1 overlaps with the second radiation arm 42, so that when the first radiation unit 5, the second radiation unit 6 and the antenna unit are working, the electromagnetic waves emitted by the first radiation unit 5 and the second radiation unit 6 are In the process of passing through the dielectric substrate 1, the first radiating arm 41 suppresses the scattering caused by the mutual coupling between the electromagnetic waves emitted by the first radiating unit 5 and the antenna unit, and the second radiating arm 42 suppresses the scattering caused by the mutual coupling between the electromagnetic waves emitted by the second radiating unit 6 and the antenna unit, thereby ensuring that when the multi-system shared antenna that transmits multiple frequency bands is working, the first radiating unit 5, the second radiating unit 6 and the antenna unit do not interfere with each other, ensuring the stability of the multi-system shared antenna during operation, improving the distortion of the radiation pattern of different frequency bands of the multi-system shared antenna, and at the same time, the antenna unit meets the wave transmission requirements of different frequency bands, making the wave-transmittable bandwidth wider, avoiding the problem of insufficient wave-transmitting bandwidth of the existing wave-transmitting structure.

[0087] Reference Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, in some embodiments, the number of the first radiation unit 5, the second radiation unit 6 and the antenna unit are all multiple; the reflector 7 includes a first area 71 and a second area 72 arranged in sequence along the first direction, a plurality of first radiation units 5 are arranged in the first area 71, and a plurality of second radiation units 6 are arranged in the second area 72; a plurality of antenna units are arranged at intervals along the second direction at the junction of the first area 71 and the second area 72, and the first radiation arm 41 is located in the first area 71, and the second radiation arm 42 is located in the second area 72, and the first direction is perpendicular to the second direction.

[0088] Specifically, the first direction and the second direction can be selected to be parallel to a side of the reflector 7 where the first radiation unit 5, the second radiation unit 6 and the antenna unit are provided, such as Figure 7 and Figure 8 As shown, a first area 71 and two second areas 72 can be optionally provided on the reflector 7. Along the second direction, the first area 71 is located between the two second areas 72. The first area 71 and the second area 72 can be selected as rectangular areas. The length directions of the first area 71 and the second area 72 are consistent with the second direction. The edges of the first area 71 and the second area 72 can be selected to fit together. The antenna unit is installed on the intersection of the first area 71 and the second area 72. Of course, the first area 71 and the second area 72 can also be selected to have a certain distance along the second direction so that the antenna unit is installed in the space between the first area 71 and the second area 72. As long as the antenna unit is provided at the intersection of the first area 71 and the second area 72, at least a portion of the dielectric substrate 1 provided with the first radiating arm 41 is located in the first area 71, and at least a portion of the dielectric substrate 1 provided with the second radiating arm 42 is located in the second area 72.

[0089] There are two intersections between the above-mentioned first area 71 and the two second areas 72. The number of antenna units can be selected to be four. Two antenna units are arranged at intervals along the second direction at one intersection. After the four antenna units are arranged on the reflector, the first radiation arms 41 of the four antenna units are partially located in the first area 71, and the second radiation arms 42 of the four antenna units are partially located in the second area 72. A plurality of first radiation units 5 can be selected to be arranged at intervals along the first direction and the second direction in the first area 71, so that the first radiation arms 41 of the four antenna units cover at least one first radiation unit 5, and the plurality of second radiation units 6 are respectively arranged in the two second areas 72. The second radiation units 6 are respectively arranged in the two second areas 72 at intervals along the second direction, so that the second radiation arms 42 of the four antenna units each cover at least one second radiation unit 6, thereby rationally utilizing the space of the reflector 7 to install more first radiation units 5, second radiation units 6 and antenna units, and utilizing the first radiation arms 41 and the second radiation arms 42 of the antenna units to respectively correspond to the first area 71 of the first radiation unit 5 and the second area 72 with the second radiation arm 42, so that when multiple system antennas are in use, the shielding of the first radiation unit 5 and the second radiation unit 6 by the antenna units will not cause mutual coupling of electromagnetic waves in different frequency bands, thereby causing deterioration and distortion of the radiation pattern.

[0090] By setting a first area 71 for installing the first radiating unit 5 and a second area 72 for installing the second radiating unit 6 on the reflector 7, and arranging multiple antenna units at intervals along the second direction at the intersection between the first area 71 and the second area 72, the first radiating arm 41 of the antenna unit is located in the first area 71, and the second radiating arm 42 is located in the second area 72, so that the space of the reflector 7 is reasonably utilized to install more first radiating units 5, second radiating units 6 and antenna units, and the first radiating arm 41 and the second radiating arm 42 of the antenna unit are respectively corresponding to the first area 71 of the first radiating unit 5 and the second area 72 with the second radiating arm 42, so that when multiple system antennas are in use, the shielding of the first radiating unit 5 and the second radiating unit 6 by the antenna units will not cause mutual coupling of electromagnetic waves in different frequency bands, resulting in deterioration and distortion of the radiation pattern.

[0091] When the multi-system shared antenna provided by the present disclosure is used, multiple first radiating units 5 are evenly installed in the first area 71, and multiple second radiating units 6 are evenly installed in the second area 72. Multiple antenna units are installed at the intersection of the first area 71 and the second area 72. When the first radiating unit 5 transmits electromagnetic waves in the first frequency band, the electromagnetic waves in the first frequency band pass through the adjacent first radiating arm 41, so that the first radiating arm 41 suppresses the electromagnetic waves in the first frequency band from coupling with the antenna unit. The second radiating unit 6 transmits electromagnetic waves in the second frequency band, and the electromagnetic waves in the second frequency band pass through the adjacent second radiating arm 42, so that the second radiating arm 42 suppresses the electromagnetic waves in the second frequency band from coupling with the antenna unit. When the multi-system shared antenna is working, the first radiating unit 5 and the second radiating unit 6 will not couple with the antenna unit, thereby improving the distortion problem of the radiation pattern of the first radiating unit 5, the second radiating unit 6 and the antenna unit. In addition, the first radiating arm 41 and the second radiating arm 42 on the dielectric substrate 1 of the antenna unit correspond to the above-mentioned first frequency band and the second frequency band, respectively, so that the bandwidth that the dielectric substrate 1 can transmit waves is wider, avoiding the problem of insufficient wave transmission bandwidth.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0093] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. An antenna unit, characterized in that: It comprises a dielectric substrate (1), a feeding assembly (2), a base assembly (3), a first radiating arm (41) and a second radiating arm (42); The feeding assembly (2) is arranged on the base assembly (3), the dielectric substrate (1) is arranged on the feeding assembly (2), and the first radiating arm (41) and the second radiating arm (42) are arranged on the dielectric substrate (1) in a relative manner along a first direction and are electrically connected to the feeding assembly (2); The first radiation arm (41) and the second radiation arm (42) are both bent and folded back to form a wave-transmitting structure, and the first radiation arm (41) and the second radiation arm (42) are asymmetric structures, so that the first radiation arm (41) and the second radiation arm (42) respectively correspond to the wave-transmitting requirements of different frequency bands; The first radiation arm (41) includes a plurality of first connection monomers (411) connected in sequence, and the second radiation arm (42) includes a plurality of second connection monomers (421) connected in sequence; The first radiation arm (41) corresponds to the wave transmission requirement of a first frequency band, the second radiation arm (42) corresponds to the wave transmission requirement of a second frequency band, the first frequency band is greater than the second frequency band, the length of at least part of the first connection monomers (411) is less than the length of the second connection monomers (421), and the number of the first connection monomers (411) is greater than the number of the second connection monomers (421); The length of the first connecting monomer (411) is 0.2 to 0.5 times the wavelength of the center frequency point of the first frequency band, and the length of the second connecting monomer (421) is 0.2 to 0.5 times the wavelength of the center frequency point of the second frequency band; The operating frequency band of the antenna unit is a third frequency band, and the third frequency band, the second frequency band and the first frequency band are all different frequency bands; The difference between the circumference of the first radiation arm (41) along its extension direction and the circumference of the second radiation arm (42) along its extension direction is less than 0.1 times the wavelength of the center frequency point of the third frequency band; The two ends of the first radiating arm (41) are respectively electrically connected to the feeding assembly (2) to form a closed ring structure, and the two ends of the second radiating arm (42) are respectively electrically connected to the feeding assembly (2) to form a closed ring structure.

2. The antenna unit according to claim 1, wherein: The first radiation arm (41) and the second radiation arm (42) are both polygonal structures, and the number of sides of the first radiation arm (41) and the number of sides of the second radiation arm (42) are equal; A plurality of the first connection monomers (411) are distributed on a plurality of sides of the first radiation arm (41), and a plurality of the second connection monomers (421) are distributed on a plurality of sides of the second radiation arm (42).

3. The antenna unit according to claim 1, wherein: The lengths of the plurality of first connecting monomers (411) are equal, the lengths of the plurality of second connecting monomers (421) are equal, and the lengths of the plurality of first connecting monomers (411) are all shorter than the lengths of the plurality of second connecting monomers (421); Alternatively, the length of some of the first connecting monomers (411) is greater than the length of the remaining first connecting monomers (411), the length of some of the second connecting monomers (421) is less than the length of the remaining second connecting monomers (421), and the length of some of the first connecting monomers (411) is equal to the length of some of the second connecting monomers (421).

4. The antenna unit according to claim 1, wherein: The number of the first radiation arms (41) and the number of the second radiation arms (42) are both two; The two first radiation arms (41) and the two second radiation arms (42) are arranged in sequence along a second direction, and the two first radiation arms (41) and the two second radiation arms (42) are arranged one by one opposite to each other along the first direction, and the first direction is perpendicular to the second direction.

5. The antenna unit according to claim 1, wherein: The first radiating arm (41) and the second radiating arm (42) are both located on the same side surface of the dielectric substrate (1).

6. A multi-system shared antenna, characterized in that: Comprising a reflective plate (7), a first radiation unit (5), a second radiation unit (6) and an antenna unit according to any one of claims 1 to 5, which are mounted on the reflective plate (7); The radiation frequency bands of the first radiation unit (5) and the second radiation unit (6) are different frequency bands, the first radiation unit (5) is arranged adjacent to the first radiation arm (41), the second radiation unit (6) is arranged adjacent to the second radiation arm (42), and at least a portion of the projection of the first radiation unit (5) on the dielectric substrate (1) overlaps with the first radiation arm (41), and at least a portion of the projection of the second radiation unit (6) on the dielectric substrate (1) overlaps with the second radiation arm (42).

7. The multi-system shared antenna according to claim 6, characterized in that: The first radiation unit (5), the second radiation unit (6) and the antenna unit are all multiple in number; The reflecting plate (7) comprises a first area (71) and a second area (72) arranged in sequence along a first direction; a plurality of the first radiation units (5) are arranged in the first area (71); and a plurality of the second radiation units (6) are arranged in the second area (72); The plurality of antenna units are spaced apart along a second direction at the junction of the first area (71) and the second area (72), the first radiation arm (41) is located in the first area (71), the second radiation arm (42) is located in the second area (72), and the first direction is perpendicular to the second direction.

Images