Multi-frequency antenna, radiation unit assembly, radiation unit mounting structure and fixing seat

Abstract

The present invention provides a multi-frequency antenna, a radiation unit assembly, a radiation unit mounting structure and a fixing seat. The radiation unit mounting structure includes a low-frequency radiation unit, a high-frequency radiation unit, a feed substrate and a fixing seat, wherein the fixing seat includes a belt-shaped waist portion arranged in contact with the bottom surface of the base, two armrest portions extending from both ends of the waist portion, each armrest portion is provided with an avoidance hole corresponding to one of the mounting columns, and a feed hole corresponding to one of the feed columns, the top surface of the fixing seat is clamped with the base, and the bottom surface clamps the feed substrate. The radiation unit mounting structure can more stably fix multiple radiation units therein to prevent them from colliding and scratching each other.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a multi-frequency antenna, a radiation unit assembly, a radiation unit mounting structure and a fixing seat. Background Art

[0002] With the development of the communications industry, miniaturized, multi-band, and multi-standard base station antennas are increasingly becoming the mainstream antennas used in the communications industry. In the base station antenna structure, the radiation unit is the most important component, and its quality and installation quality have a direct impact on the indicators of the entire antenna. In order to improve the space utilization of the antenna, an existing radiation unit combination nests a smaller radiation unit into another radiation unit for assembly and welding. After welding, the two radiation units are movable with each other, and are prone to collision with each other, causing scratches, entanglement, etc., which ultimately affects the antenna performance. Summary of the invention

[0003] The object of the present invention is to provide a radiation unit installation structure for fixing a plurality of radiation units.

[0004] Another object of the present invention is to provide a fixing base, a radiation unit assembly and a multi-frequency antenna.

[0005] To achieve the above objectives, the present invention provides a radiation unit installation structure, including a low-frequency radiation unit, a high-frequency radiation unit, a feed substrate and a fixing seat, the low-frequency radiation unit has an annular base, the bottom surface of which is provided with a pair of feed posts for passing through an antenna reflector and a pair of mounting posts for locking with the antenna reflector, the high-frequency radiation unit is nested in a hole area formed by the base, and its bottom is installed and connected in the feed substrate, the feed substrate and the antenna reflector are fixedly arranged, the fixing seat includes a belt-shaped waist portion arranged in contact with the bottom surface of the base, two armrest portions extending from both ends of the waist portion, each armrest portion is provided with an avoidance hole corresponding to one of the mounting posts, and a feeding hole is provided corresponding to one of the feeding posts, the top surface of the fixing seat is clamped with the base, and the bottom surface clamps the feed substrate.

[0006] Furthermore, the pair of mounting posts are symmetrically distributed on both sides of the base, and the feeding posts are symmetrically distributed on the base adjacent to the mounting posts, and are both located on the same side of a connection line formed by the pair of mounting posts.

[0007] Furthermore, the armrest portion of the fixing seat corresponds to the positions of the feeding column and the mounting column, so that the feeding column is located at the end of the armrest portion and the mounting column is correspondingly located on the inner side of the armrest portion.

[0008] Furthermore, at the top surface of the fixing seat, the armrest portion and the waist portion form a same plane, and a plurality of first buckling parts with discrete positions are provided on the plane for tightly buckling with the top surface of the base.

[0009] Furthermore, a plurality of second buckling members with discrete positions are provided on the bottom surface of the fixing seat for clamping the feeding substrate, wherein individual buckling members are arranged through the feeding substrate.

[0010] Furthermore, one side of the feed substrate used to connect the high-frequency radiation unit is gradually tapered to form a tongue-shaped portion, and a positioning hole is provided at the position of the feed substrate outside the tongue-shaped portion. Among the second fasteners, two fasteners are respectively formed on the outer walls of the two feeding holes of the armrest portion of the fixing seat to respectively hold the two sides of the tongue-shaped portion, and one fastener is provided on the side of the pin fixed to the bottom surface of the fixing seat to clamp the hole wall of the positioning hole when the pin passes through the positioning hole.

[0011] Preferably, the fixing seat is further provided with a stop point for stopping the tongue-shaped portion of the feed substrate on the outer wall of the feed hole adjacent to the second latch; after the second latch clamps the feed substrate, a loose margin is reserved between the protruding latch tongue and the stop point for the feed substrate to move during the installation phase.

[0012] Furthermore, the fixing seat is an integrally formed part, and the thickness of the feeding hole and the avoidance hole are both greater than the thickness of the waistline portion.

[0013] Furthermore, the feed substrate is provided with another high-frequency radiation unit on the side opposite to the side where the high-frequency radiation unit is installed, which does not need to be nested with any low-frequency radiation unit.

[0014] In order to achieve another object of the present invention, the present invention provides:

[0015] A fixing seat is the fixing seat in the radiation unit installation structure provided by the present invention.

[0016] A radiation unit assembly comprises the radiation unit installation structure provided by the present invention.

[0017] A multi-frequency antenna comprises at least one composite radiation unit column, which radiates a low-frequency first frequency band signal through a first nested column composed of low-frequency radiation oscillators, and radiates a high-frequency second frequency band signal through a second nested column composed of high-frequency radiation oscillators. The radiation unit column comprises a plurality of the radiation unit assemblies, and the plurality of radiation unit assemblies are arranged coaxially, the low-frequency radiation units in each radiation unit assembly together constitute the first nested column, and the high-frequency radiation units in each radiation unit assembly together constitute the second nested column.

[0018] The beneficial effects brought by the technical solution provided by the present invention are:

[0019] The radiation unit installation structure provided by the present invention adopts a base for buckling the low-frequency radiation unit and a design for fixing the feeding substrate, so that the high-frequency radiation unit and the low-frequency radiation unit that are nested together can be relatively fixed, thereby preventing the two radiation units from colliding and scratching each other during the transportation of the radiation unit installation structure; the outer wall of its feeding hole can be positioned in conjunction with the through hole on the antenna reflector plate, which can assist in the installation of the radiation unit assembly; the fixing seat is a semi-open design, which can meet the requirement of assembling the radiation unit installation structure after the radiation unit and the feeding substrate are welded, thereby avoiding the situation where welding after assembly causes damage to the fixing seat.

[0020] After the radiation unit assembly provided by the present invention and the antenna reflector are fixedly installed, the fixing seat does not affect the close installation between the feed substrate and the antenna reflector, and the fixing seat can play a role of pre-positioning, which is convenient for installation; the fixing seat can also protect the low-frequency radiation unit feeding column in the radiation unit assembly passing through the antenna reflector to avoid scratches during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments of the present invention are briefly introduced below.

[0022] Figure 1 It is a structural schematic diagram of a typical embodiment of the radiation unit installation structure of the present invention;

[0023] Figure 2 is a structural diagram of the fixing base of the present invention, showing one viewing angle thereof;

[0024] Figure 3 is a structural diagram of the fixing base of the present invention, showing another viewing angle thereof;

[0025] Figure 4 A schematic structural diagram of another embodiment of the radiation unit installation structure of the present invention;

[0026] Figure 5 A schematic structural diagram of another embodiment of a feed substrate of a radiation unit mounting structure of the present invention;

[0027] Figure 6a A schematic diagram of the first step of installing the radiation unit installation structure of the present invention;

[0028] Figure 6b A schematic diagram of the second installation step of the radiation unit installation structure of the present invention;

[0029] Figure 6c Another schematic diagram of the second installation step of the radiation unit installation structure of the present invention;

[0030] Figure 6dA schematic diagram of the third installation step of the radiation unit installation structure of the present invention;

[0031] Figure 6e A schematic diagram of step 4 of installing the radiation unit installation structure of the present invention;

[0032] Figure 7 It is a schematic diagram of assembling the radiation unit assembly and the antenna reflector of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the multi-frequency antenna of the present invention. DETAILED DESCRIPTION

[0034] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0035] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0036] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0037] The present invention provides a radiation unit installation structure M, such as Figure 1 As shown, it includes a low-frequency radiation unit 1, a high-frequency radiation unit 2, a feeding substrate 3 and a fixing seat 4.

[0038] The radiation unit installation structure M includes radiation units of at least two frequency bands. In this embodiment, the radiation unit combination includes a low-frequency radiation unit 1 and a high-frequency radiation unit 2. The volume of the low-frequency radiation unit 1 is larger than the volume of the high-frequency radiation unit 2. The basic structure of the low-frequency radiation unit 1 includes: an annular base 11, a hole area 110 is formed in the middle of the annular base 11, and a bottom surface surrounding the hole area 110. A pair of feeding posts 12 and a pair of mounting posts 13 are provided on the bottom surface. The feeding posts 12 pass through the antenna reflector and realize the electrical connection between the low-frequency radiation unit 1 and the signal feeder cable, and the mounting posts 13 are used to lock and fix the low-frequency radiation unit 1 and the antenna reflector. The pair of mounting posts 13 are symmetrically distributed on both sides of the base 11, and the feeding posts 12 are symmetrically distributed on the base 11 adjacent to the mounting posts 13, and are both located on the same side of the connection line formed by the pair of mounting posts 13.

[0039] In order to improve the space utilization of the antenna, the present embodiment nests the smaller high-frequency radiation unit 2 into the larger low-frequency radiation unit 1. The bottom of the high-frequency radiation unit 2 is nested in the hole area 110 formed by the base 11 of the low-frequency radiation unit 1, and the connecting component at the bottom of the high-frequency radiation unit 2 passes through the hole area 110 and is fixedly connected to the feed substrate 3. Finally, the fixing seat 4 is used to further fasten and fix the low-frequency radiation unit 1, the high-frequency radiation unit 2, and the feed substrate 3.

[0040] The specific structure of the fixing seat 4 is as follows Figure 2 and Figure 3 As shown, the fixing base 4 includes a belt-shaped waist portion 41, whose shape and size match the shape of the bottom surface of the base 11 of the low-frequency radiation unit. When used, the waist portion 41 fits the bottom surface of the base 11. Along the two ends of the waist portion 41, corresponding to the positions of the feeding column 12 and the installation column 13 on both sides of the base 11, an armrest portion 42 is extended respectively.

[0041] A feeding hole 44 is provided at the end of the armrest portion 42, and the feeding hole 44 corresponds to the feeding post 12 of the base 11 of the low-frequency radiation unit 1. When the fixing base 4 is in use, the feeding post 12 can extend through the feeding hole 44. Each armrest portion 42 is also provided with a avoidance hole 43 corresponding to the mounting post 13 of the base 11 of the low-frequency radiation unit 1 at one end thereof connected to the waist portion 41, and the avoidance hole 43 allows the mounting screw to pass through it to achieve the fixed connection between the radiation unit mounting structure M and the antenna reflector.

[0042] Since the feed post 12 has a certain height, the feed hole 44 is designed to have a certain thickness to cover the feed post 12, but the height of the latter is based on not hindering the former from passing through the reflector. Since the avoidance hole 43 needs to allow the installation screw to pass through it to achieve the fixed connection between the radiation unit mounting structure M and the antenna reflector, the avoidance hole 43 is also designed to have a certain height to enhance the installation stability of the mounting part. Therefore, in the overall design of the fixing seat 4, from the appearance, the thickness of the avoidance hole 43 and the feed hole 44 is greater than the thickness of the waist circumference 41, among which the thickness of the feed hole 44 is the largest.

[0043] The fixing seat 4 is formed of a top surface 45 and a bottom surface 46 by two surfaces of its waist circumference 41 and armrest 42, wherein the top surface 45 is relatively flat, and the armrest 42 and waist circumference 41 are formed on the same plane. The bottom surface 46 is uneven because the waist circumference 41 and the feeding hole 44 and the avoidance hole 43 have different thicknesses, and the avoidance hole 43 and the feeding hole 44 protrude in the direction of the bottom surface 46. When the product is used, the top surface 45 of the fixing seat 4 fits the bottom surface of the base 11 of the low-frequency radiation unit 1, the top surface 45 of the fixing seat 4 is clamped with the base 11, and the bottom surface 46 clamps the feeding substrate 3.

[0044] The top surface 45 of the fixing seat 4 is provided with a plurality of first fasteners 47 with discrete positions, which are used to be tightly fastened with the top surface (not marked) of the base 11 of the low-frequency radiation unit. The number of the first fasteners 47 and their position distribution can be set according to requirements. In this embodiment, three first fasteners 47 are preferably provided. Among them, the first first fastener 471 is arranged at the outer edge of the middle part of the waistline part, and the second and third 472 and 473 are respectively arranged on the outside of the avoidance holes 43 of the two armrest parts 42, and the three first fasteners 47 use a triangular stable relationship to tightly fasten the fixing seat 4 to the base 11.

[0045] A plurality of second snap fasteners 48 with discrete positions are provided on the bottom surface 46 of the fixing seat 4, for clamping the feed substrate 3, and the number of the second snap fasteners 48 can be set according to the requirements. In this embodiment, three second snap fasteners 48 are preferably provided, the first second snap fastener 481 is provided at a certain position in the middle of the waistline portion 41, the second second snap fastener 482 and the third second snap fastener (not shown) are respectively provided at the outer wall of the inner side of the feed hole 44 at the end of the two armrest portions 42, and the feed substrate 3 is clamped in a triangular stable relationship.

[0046] A pin 49 is also provided on the waist portion 41 of the bottom surface 46 of the fixing seat 4. In this embodiment, the second fastener 481 provided on the waist portion 41 is provided on the side of the pin 49. When the second fastener 481 passes through the positioning hole 32 of the feed substrate 3 together with the pin 49, it clamps the hole wall of the positioning hole 32 to clamp the feed substrate 3.

[0047] The fixing base 4 is further provided with a stop point 410 for stopping the tongue portion 33 of the feed substrate 3 at the outer wall of the feed hole 44 adjacent to the second latching members 482 and 483. After the second latching member 48 clamps the feed substrate 3, a loose margin is reserved between the protruding latching tongue and the stop point 410 for the feed substrate 3 to move during the installation stage.

[0048] The fixing seat 4 is an integrally formed part and can be made of plastic.

[0049] From the perspective of the installation structure, the feed substrate 3 is used to connect the high-frequency radiation unit 2 and the low-frequency radiation unit 1 .

[0050] A radiation unit installation structure M provided by the present invention includes a low-frequency radiation unit 1 and at least one high-frequency radiation unit 2.

[0051] In one embodiment, the radiation unit installation structure M includes a low-frequency radiation unit 1 and a high-frequency radiation unit 2. Figure 4 and Figure 5 As shown, in this embodiment, the structure of the feed substrate 3 includes an elongated main body 30 and a tongue-shaped portion 33 extending from one side of the main body 30 .

[0052] The size of the tongue portion 33 matches the distance between the two feeding holes 44 of the fixing base 4. A plurality of welding holes 31 and positioning holes 32 for welding with the high-frequency radiation unit 1 are provided outside the tongue portion 33 of the feeding substrate 3, i.e., on the main body 30 thereof.

[0053] The position of the welding hole 31 corresponds to the connecting piece at the bottom of the high-frequency radiation unit 2. When the feeding substrate 3 is applied and installed, the welding hole 31 is located in a hole area 110 formed in the middle of the annular base 11 of the low-frequency radiation unit 1. The position of the positioning hole 32 matches the position of the pin 49.

[0054] The tongue-shaped portion 33 is disposed between the two feeding holes 44 , and the second latching members 482 and 483 located inside the feeding holes 44 respectively latch two sides of the tongue-shaped portion 33 .

[0055] In this embodiment, the radiation unit installation structure M includes a low-frequency radiation unit 1 and two high-frequency radiation units 2. Figure 1 The feed substrate 3 is provided with another high-frequency radiation unit 2 on the opposite side of the side corresponding to the installation of the high-frequency radiation unit 2, which does not need to be nested with any low-frequency radiation unit 1.

[0056] Therefore, compared with the previous embodiment, the installation structure of the feed substrate 3 is different in that another group of welding holes 31 is provided at the non-connected and nested end of the feed substrate 3, where it is welded to another high-frequency radiation unit 2, and the feed substrate 3 does not need to be provided with a tongue-shaped portion 33 at this end.

[0057] The above introduces the specific structural composition of a radiation unit mounting structure M provided by the invention. The design principle and beneficial effects of the mounting structure M are further explained below through the specific implementation methods of the specific installation steps of the low-frequency radiation unit 1, the high-frequency radiation unit 2, the feed substrate 3 and the fixing seat 4 in the structure.

[0058] The radiation unit installation structure M includes a low-frequency radiation unit 1 and two high-frequency radiation units 2 .

[0059] Step 1: Reference Figure 6a , weld the first high-frequency radiation unit 21 and the feed substrate 3 to be nested at the low-frequency radiation unit base 11, and weld the second high-frequency radiation unit 22 at the other end of the feed substrate 3. At this time, the feed substrate 3 has not been fixed to the base 11 of the low-frequency radiation unit 1, and there is still a certain amount of movement outside the base 11. It is convenient to install the fixing base 4 to the corresponding position later.

[0060] Step 2: Reference Figure 6b and Figure 6c The fixing seat 4 passes through the feeding substrate 3, and the top surface 45 (not shown in the figure, which is opposite to the bottom surface 46) of the fixing seat 4 faces the base 11 of the low-frequency radiation unit 1. The two feeding holes 44 of the two fixing seats are covered with the feeding column of the low-frequency radiation unit 1, and the avoidance hole 43 of the fixing seat 4 is aligned with the mounting hole, so that the feeding column 12 is located at the end of the armrest portion 42, and the mounting column 13 is correspondingly located on the inner side of the armrest portion 42.

[0061] Step 3: Reference Figure 6d After the position of the fixing seat 4 is determined, the fixing seat 4 is pressed toward the base 11 , and the three first buckling members 47 arranged on the top surface 45 of the fixing seat are respectively buckled with the base 11 , and the fixing seat 4 is fixedly connected to the base 11 .

[0062] Step 4: Reference Figure 6eAfter the fixing seat 4 and the base 11 are fixed, the tongue-shaped portion 33 of the feed substrate 3 is placed between the two feed holes 44 of the fixing seat 4, and the stop point 410 (covered by the feed substrate 3 in the figure) arranged on the inner side of the outer wall of the feed hole 44 has the function of stopping and supporting the feed substrate 3. The positioning hole 32 of the feed substrate 3 of the fixing seat is aligned with the pin 49 on the bottom surface of the fixing seat, and the feed substrate 3 is pressed toward the base 11 until the three second buckles 48 at the bottom of the fixing seat 4 buckle the feed substrate 3 respectively.

[0063] After completing step 4, the assembled installation of the radiation unit installation structure M is completed.

[0064] The fixing seat 4 in the radiation unit installation structure M can relatively fix the nested high-frequency radiation unit 2 and low-frequency radiation unit 1 to prevent the two radiation units from colliding and scratching each other during the transportation of the radiation unit installation structure M.

[0065] The fixing seat 4 is designed with a semicircular opening, which can meet the requirement that the radiation unit installation structure M can be assembled after the radiation unit and the feeding substrate 3 are welded, avoiding the situation where the fixing seat is damaged due to welding after assembly.

[0066] The invention also provides a radiation unit component and a multi-frequency antenna.

[0067] The radiation unit assembly includes the radiation unit mounting structure M, and the radiation unit assembly is mounted in the antenna reflector. Figure 7 As shown, the radiation unit assembly is fixed to the antenna reflector 6 by screws 5 through the through holes in the antenna reflector 6 corresponding to the avoidance holes 43 and the mounting posts 13 in the radiation unit mounting structure M, and the feed substrate 3 is fixed to the antenna reflector 6 through other parts.

[0068] Through the design of the fixing base 4 of the present invention, the outer wall of the feed hole 44 can be positioned in conjunction with the through hole on the antenna reflector 6, which can assist in the installation of the radiation unit assembly;

[0069] Secondly, after the fixing base 4 is fixedly installed on the radiation unit assembly and the antenna reflector, it does not affect the close installation between the feed substrate 3 and the antenna reflector 6. At the same time, the fixing base 4 can play a role of pre-positioning, which is convenient for installation;

[0070] In addition, the fixing base 4 protects the part of the low-frequency radiation unit feeding column 12 in the radiation unit assembly that passes through the antenna reflection plate 6, thereby preventing it from being scratched during the installation process.

[0071] The present invention provides a multi-frequency antenna as described above. Figure 8As shown, it includes at least one composite radiation unit column, which radiates a low-frequency first frequency band signal through a first nested column composed of low-frequency radiation oscillators, and radiates a high-frequency second frequency band signal through a second nested column composed of high-frequency radiation oscillators. The radiation unit column includes the radiation unit assembly including the radiation unit mounting structure M, and multiple radiation unit assemblies are coaxially arranged, and the low-frequency radiation units in each radiation unit assembly together constitute the first nested column, and the high-frequency radiation units in each radiation unit assembly together constitute the second nested column.

[0072] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with the technical features with similar functions invented in the present invention (but not limited to) to form a technical solution.

Claims

1. A radiation unit installation structure, comprising a low-frequency radiation unit, a high-frequency radiation unit, a feed substrate and a fixing seat, wherein the low-frequency radiation unit has an annular base, the bottom surface of which is provided with a pair of feed posts for passing through an antenna reflector and a pair of mounting posts for locking with the antenna reflector, the high-frequency radiation unit is nested in a hole area formed by the base, and the bottom of the high-frequency radiation unit is installed and connected in the feed substrate, and the feed substrate is fixed with the antenna reflector, characterized in that: The fixing seat includes a belt-shaped waist portion arranged in contact with the bottom surface of the base, and two armrest portions extending from both ends of the waist portion. Each armrest portion is provided with an avoidance hole corresponding to one of the mounting columns, and a feeding hole is provided corresponding to one of the feeding columns. The top surface of the fixing seat is clamped with the base, and the bottom surface clamps the feeding substrate.

2. The radiation unit installation structure according to claim 1, characterized in that: The pair of mounting posts are symmetrically distributed on both sides of the base, and the feeding posts are symmetrically distributed on the base adjacent to the mounting posts, and are both located on the same side of a connection line formed by the pair of mounting posts.

3. The radiation unit installation structure according to claim 2, characterized in that: The armrest portion of the fixing seat corresponds to the positions of the feeding column and the mounting column, so that the feeding column is located at the end of the armrest portion and the mounting column is correspondingly located at the inner side of the armrest portion.

4. The radiation unit installation structure according to claim 3, characterized in that: At the top surface of the fixing seat, the armrest portion and the waistline portion form a same plane, and a plurality of first buckling parts with discrete positions are provided on the plane for tightly buckling with the top surface of the base.

5. The radiation unit installation structure according to claim 3, characterized in that: A plurality of second buckling members with discrete positions are provided on the bottom surface of the fixing seat for clamping the feeding substrate, wherein individual buckling members are arranged through the feeding substrate.

6. The radiation unit installation structure according to claim 5, characterized in that: The feeding substrate is used to connect the high-frequency radiation unit and is tapered to form a tongue-shaped portion on one side. A positioning hole is provided at the position of the feeding substrate outside the tongue-shaped portion. Among the second fasteners, two fasteners are respectively formed on the outer walls of the two feeding holes of the armrest portion of the fixing seat to respectively hold the two sides of the tongue-shaped portion, and one fastener is provided on the side of the pin fixed to the bottom surface of the fixing seat to clamp the hole wall of the positioning hole when the pin passes through the positioning hole.

7. The radiation unit installation structure according to claim 6, characterized in that: The fixing seat is also provided with a stop point for stopping the tongue-shaped portion of the feed substrate at the outer wall of the feed hole adjacent to the second clip. After the second clip clamps the feed substrate, a loose margin is reserved between the protruding clip tongue and the stop point for the feed substrate to move during the installation stage.

8. The radiation unit installation structure according to any one of claims 1 to 7, characterized in that: The fixing seat is an integrally formed part, and the thickness of the feeding hole and the avoidance hole are both greater than the thickness of the waistline portion.

9. The radiation unit installation structure according to any one of claims 1 to 7, characterized in that: The feed substrate is provided with another high-frequency radiation unit at the side opposite to the side where the high-frequency radiation unit is installed, which does not need to be nested with any low-frequency radiation unit.

10. A fixing seat, characterized in that: The fixing seat is a fixing seat as described in any one of claims 1 to 9.

11. A radiation unit assembly, characterized in that: It comprises the radiation unit mounting structure as claimed in claim 9.

12. A multi-frequency antenna, comprising at least one composite radiation unit column, wherein the radiation unit column radiates a low-frequency first frequency band signal through a first nested column composed of low-frequency radiation oscillators, and radiates a high-frequency second frequency band signal through a second nested column composed of high-frequency radiation oscillators, characterized in that: The radiation unit column includes a plurality of radiation unit assemblies as described in claim 11, and the plurality of radiation unit assemblies are coaxially arranged, and the low-frequency radiation units in each radiation unit assembly together constitute the first nested column, and the high-frequency radiation units in each radiation unit assembly together constitute the second nested column.

Images