A new integrated bent inverted F antenna

Abstract

The present invention discloses a novel integrated bent inverted F antenna, which belongs to the field of antenna feeding and microwave signal transmission technology. The structure includes an inverted F antenna structure, a connecting conduit, an inner conductor, an outer conductor, an insulating sleeve and a pin, etc. The connecting conduit is arranged on the top of the inverted F antenna structure, the connecting conduit and the inverted F antenna structure are formed in one piece, the insulator is installed inside the connecting conduit, the inner conductor is installed in the through hole of the insulator, the bottom of the inner conductor is connected to the inverted F antenna structure, the outer conductor is installed in the side step hole, the insulating sleeve is installed inside the outer conductor, the pin is installed in the through hole of the insulating sleeve, and the end of the pin is connected to the top of the inner conductor. Compared with the prior art, the structure integrates the bent RF coaxial connector and the inverted F antenna structure into one piece, converts the risk point from assembly to machining, avoids the factor of manual operation, significantly improves the reliability and performance consistency of the antenna product, and reduces the product volume and the difficulty of processing and manufacturing.

Description

Technical Field

[0001] The invention belongs to the technical field of antenna feeding and microwave signal transmission, and in particular relates to a novel integrated bent inverted F antenna. Background Art

[0002] The inverted F antenna is a modified structure of the monopole antenna. In order to reduce the height of the antenna, the monopole is first bent 90 degrees to form an inverted L antenna; then an L patch is added at the corner of the antenna to adjust the matching performance between the antenna and the coaxial line. Existing inverted F antenna products are generally split structures. When in use, the inverted F antenna structure and the bent RF coaxial connector are combined together by screws. The inner conductor of the bent connector is fixed to the antenna structure by soldering or dispensing, and the outer conductor is fixed to the antenna structure by screws.

[0003] In practical applications, the existing technology has the following technical disadvantages:

[0004] 1) Human factors cannot be avoided, and reliability is poor. The existing inverted F antenna is an RF coaxial connector assembled with an inverted F structure. The inner conductor is mostly connected to the structure by welding or dispensing, and the outer conductor is connected to the structure by screws. During the assembly process, the impact of manual operation is relatively large. The quality of assembly directly affects the performance of the antenna, and the consistency of performance of products in the same batch cannot be guaranteed.

[0005] 2) The debugging process is complicated. The existing inverted F antenna usually needs to be debugged after the connector and the inverted F structure are assembled. Usually an adjustment screw is installed to tune the resonant frequency of the antenna product and the resonant point use frequency. The debugging process is relatively complicated.

[0006] How to optimize the structure and solve the above shortcomings has become a technical problem in this technical field. Summary of the invention

[0007] In view of this, the present invention provides a novel integrated bent inverted-F antenna, which integrates the bent RF coaxial connector and the inverted-F antenna structure into one, transforms the risk point from assembly to machining, avoids the factor of manual operation, significantly improves the reliability and performance consistency of the antenna product, and at the same time reduces the product volume and reduces the difficulty of processing and manufacturing.

[0008] The present invention solves the above problems by the following technical means:

[0009] A novel integrated bent inverted F antenna, characterized in that it comprises an inverted F antenna structure, a connecting conduit, an insulator, an inner conductor, an outer conductor, an insulating sleeve and a pin, wherein: the connecting conduit is arranged on the top of the inverted F antenna structure, the connecting conduit and the inverted F antenna structure are integrally formed, and a side step hole is opened on the side wall of the connecting conduit; the insulator is installed inside the connecting conduit, the outer wall of the insulator is in close contact with the inner wall of the connecting conduit, and a through hole is provided in the middle of the insulator; the inner conductor is installed in the through hole of the insulator, and the bottom of the inner conductor is connected to the inverted F antenna structure; the outer conductor is installed in the side step hole; the insulating sleeve is installed inside the outer conductor, the outer wall of the insulating sleeve is in close contact with the inner wall of the outer conductor, and a through hole is provided in the middle of the insulating sleeve; the pin is installed in the through hole of the insulating sleeve, one end of the pin adopts a standard RF coaxial connector interface, the other end of the pin is connected to the top of the inner conductor, and the inner conductor is connected to the inverted F antenna structure for feeding through its split groove structure.

[0010] Preferably, a top hole is provided at the top of the connecting conduit, and a top cover is detachably installed in the top hole.

[0011] Preferably, the insulator comprises an insulating tube and an insulating sheet, both of which are sleeved on the inner conductor, wherein: the insulating tube is coaxially installed in the connecting conduit, and the insulating sheet is arranged in the gap between the connecting conduit and the inverted-F antenna structure.

[0012] Preferably, a slot structure is provided at the bottom of the inner conductor, and the slot structure at the bottom is used to connect to the inverted-F antenna structure. A connecting port is provided at the top of the inner conductor, and the connecting port at the top is used to connect to the pin.

[0013] Preferably, an annular groove is provided on the outer wall of the outer conductor, a retaining ring is provided in the annular groove, the annular groove and the retaining ring are used for rotatably mounting the screw sleeve, and a step is provided at the end of the outer conductor, and one or more sealing rings are mounted on the step.

[0014] Preferably, an antenna surface is provided in the middle of the inverted F antenna structure, an inverted F structure is provided at the bottom of the inverted F antenna structure, the antenna surface, the inverted F structure and the connecting guide tube are an integrated structure, a connecting hole is provided at the top of the feeding end of the inverted F structure, and the connecting hole is cooperated and connected with the split groove structure at the bottom of the inner conductor.

[0015] Preferably, the connection between the outer conductor and the side step hole is fixed by silver soldering.

[0016] Preferably, the outer conductor is made of lead brass HPb59-1 material, and the plating material of the outer conductor is selected from gold, nickel or silver according to requirements.

[0017] Preferably, the inner conductor is made of beryllium bronze QBe2 material, and the plating material of the inner conductor is gold.

[0018] Preferably, the insulator and the insulating sleeve are made of polytetrafluoroethylene SFBN-1 material.

[0019] The novel integrated bent inverted F antenna of the present invention has the following beneficial effects:

[0020] The integrated curved inverted F antenna breaks through the existing two-body structural design of the inverted F antenna. It integrates the curved RF coaxial connector with the inverted F antenna structure. One part of the outer conductor of the curved connector is processed as a whole with the inverted F antenna structure, and the other part is fixed to the inverted F antenna by silver soldering. The slot at the head of the inner conductor is plugged into the inverted F antenna structure to achieve close contact. The integrated structural design avoids the factors of manual operation, reduces risk points, improves product reliability and quality consistency, and also reduces the volume of the antenna product and the difficulty of processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the inverted F antenna structure and the connecting conduit structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the installation and connection of the inner conductor of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation and connection of the outer conductor of the present invention.

[0026] Among them, 1-inverted F antenna structure, 101-antenna surface, 102-inverted F structure, 103-feeding end, 104-connecting hole, 2-connecting guide tube, 201-side step hole, 202-top hole, 203-top cover, 3-insulator, 301-insulating tube, 302-insulating sheet, 4-inner conductor, 401-slot structure, 402-connecting port, 5-outer conductor, 501-ring groove, 502-clamp ring, 503-step, 504-sealing ring, 6-insulating sleeve, 7-pin, 8-screw sleeve. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] The present invention will be described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 4 As shown, the integrated bent inverted F antenna includes an inverted F antenna structure 1, a connecting conduit 2, an insulator 3, an inner conductor 4, an outer conductor 5, an insulating sleeve 6, a pin 7 and a screw sleeve 8. In the figure, the connecting conduit 2 is arranged on the top of the inverted F antenna structure 1, and the connecting conduit 2 and the inverted F antenna structure 1 are integrally formed. A side step hole 201 is opened on the side wall of the connecting conduit 2, and a top hole 202 is arranged on the top of the connecting conduit 2. A top cover 203 is detachably installed in the top hole 202. The arrangement of the top cover 203 facilitates the inspection of whether the connection between the pin 7 and the inner conductor 4 is reliable, and facilitates the welding of the pin 7 and the inner conductor 4. The insulator 3 is installed inside the connecting conduit 2, and the outer wall of the insulator 3 The inner wall of the connecting conduit 2 is closely attached, and a through hole is provided in the middle of the insulator 3; the inner conductor 4 is installed in the through hole of the insulator 3, and the bottom of the inner conductor 4 is connected to the inverted-F antenna structure 1; the outer conductor 5 is installed in the side step hole 201, and the connection between the outer conductor 5 and the side step hole 201 is fixed by silver soldering; the insulating sleeve 6 is installed inside the outer conductor 5, and the outer wall of the insulating sleeve 6 is closely attached to the inner wall of the outer conductor 5, and a through hole is provided in the middle of the insulating sleeve 6; the pin 7 is installed in the through hole of the insulating sleeve 6, one end of the pin 7 adopts a standard RF coaxial connector interface, and the other end of the pin 7 is connected to the top of the inner conductor 4, and the inner conductor 4 is connected to the inverted-F antenna structure 1 for feeding through its slot structure.

[0030] In the figure, the insulator 3 includes an insulating tube 301 and an insulating sheet 302, and the insulating tube 301 and the insulating sheet 302 are both sleeved on the inner conductor 4, wherein: the insulating tube 301 is coaxially installed in the connecting conduit 2, and the insulating sheet 302 is arranged in the gap between the connecting conduit 2 and the inverted F antenna structure 1. The insulating tube 301 and the insulating sheet 302 are independently arranged for easy installation and removal. Specifically, the insulator 3 and the insulating sleeve 6 are made of polytetrafluoroethylene SFBN-1 material.

[0031] In the figure, a slot structure 401 is provided at the bottom of the inner conductor 4, and the slot structure 401 at the bottom is used to connect to the inverted F antenna structure 1. A connecting port 402 is provided at the top of the inner conductor 4, and the connecting port 402 at the top is used to connect to the pin 7. The connecting port 402 and the pin 7 can be further fixed by soldering.

[0032] In the figure, an annular groove 501 is provided on the outer wall of the outer conductor 5, a retaining ring 502 is provided in the annular groove 501, the annular groove 501 and the retaining ring 502 are used to rotatably install the screw sleeve 8, and a step 503 is provided at the end of the outer conductor 5, and one or more sealing rings 504 are mounted on the step 503.

[0033] In the figure, an antenna surface 101 is provided in the middle of the inverted-F antenna structure 1, and an inverted-F structure 102 is provided at the bottom of the inverted-F antenna structure 1. The antenna surface 101, the inverted-F structure 102 and the connecting guide tube 2 are an integrated structure. A connecting hole 104 is opened at the top of the feeding end 103 of the inverted-F structure 102, and the connecting hole 104 is cooperated and connected with the split groove structure 401 at the bottom of the inner conductor 4.

[0034] It should be noted that the connector interface of the integrated inverted F antenna structure is a standard interface of the RF coaxial connector, which ensures the interchangeability of the antenna product with conventional RF coaxial connectors. At the same time, a 50Ω transmission segment structure is designed to feed the antenna. The outer conductor is silver-soldered with the connector shell and the inverted F antenna at the 90° bend of the connector, and the rest of the parts are processed as one with the inverted F structure; the inner conductor is processed by splitting the groove to transform the rigid structure of the inner conductor head into an elastic structure, and the antenna shell is processed with a blind hole. During assembly, the split groove structure of the inner conductor is directly plugged into the inner hole of the shell to achieve the connection between the inner conductor and the shell. After the split groove inner conductor is plugged into the antenna shell, four-sided contact is formed, and there are contact points in all directions, and the connection is reliable.

[0035] In this embodiment, the outer conductor 5 is made of lead brass HPb59-1 material, and the plating material of the outer conductor 5 is selected from gold, nickel or silver according to the requirements. The inner conductor 4 is made of beryllium bronze QBe2 material, and the strength after heat treatment is greater than 1000MPa, and the plating material of the inner conductor 4 is selected from gold.

[0036] It should be further explained that the proposed integrated structure design of the curved connector and the inverted F antenna can be applied to the integrated design of the RF coaxial connector and the inverted F antenna, and should not be limited to the curved structure, but also include the straight structure. Under the premise of ensuring the 50Ω transmission section, the size and interface of each connector part can be flexibly changed.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel integrated bent inverted F antenna, characterized in that: The invention comprises an inverted F antenna structure (1), a connecting guide tube (2), an insulator (3), an inner conductor (4), an outer conductor (5), an insulating sleeve (6) and a pin (7), wherein: The connecting conduit (2) is arranged on the top of the inverted-F antenna structure (1), the connecting conduit (2) and the inverted-F antenna structure (1) are integrally formed, and a side step hole (201) is provided on the side wall of the connecting conduit (2); The insulator (3) is installed inside the connecting conduit (2), the outer wall of the insulator (3) is in close contact with the inner wall of the connecting conduit (2), and a through hole is provided in the middle of the insulator (3); The inner conductor (4) is installed in the through hole of the insulator (3), and the bottom of the inner conductor (4) is connected to the inverted-F antenna structure (1); The outer conductor (5) is installed in the side step hole (201); The insulating sleeve (6) is installed inside the outer conductor (5), the outer wall of the insulating sleeve (6) is in close contact with the inner wall of the outer conductor (5), and a through hole is provided in the middle of the insulating sleeve (6); The plug pin (7) is installed in the through hole of the insulating sleeve (6); one end of the plug pin (7) adopts a standard radio frequency coaxial connector interface; the other end of the plug pin (7) is connected to the top of the inner conductor (4); and the inner conductor (4) is connected to the inverted F antenna structure (1) for feeding through its slot structure.

2. The novel integrated bent inverted F antenna according to claim 1 is characterized in that: A top hole (202) is provided at the top of the connecting conduit (2), and a top cover (203) is detachably installed in the top hole (202).

3. The novel integrated bent inverted F antenna according to claim 1, characterized in that: The insulator (3) comprises an insulating tube (301) and an insulating sheet (302), and the insulating tube (301) and the insulating sheet (302) are both mounted on the inner conductor (4), wherein: the insulating tube (301) is coaxially installed in the connecting conduit (2), and the insulating sheet (302) is arranged in the gap between the connecting conduit (2) and the inverted-F antenna structure (1).

4. The novel integrated bent inverted F antenna according to claim 1, characterized in that: The inner conductor (4) is provided with a slot structure (401) at the bottom, the slot structure (401) at the bottom is used to connect to the inverted F antenna structure (1), and the inner conductor (4) is provided with a connection port (402) at the top, the connection port (402) at the top is used to connect to the pin (7).

5. The novel integrated bent inverted F antenna according to claim 1, characterized in that: An annular groove (501) is provided on the outer wall of the outer conductor (5), a retaining ring (502) is provided in the annular groove (501), the annular groove (501) and the retaining ring (502) are used to rotatably mount the screw sleeve (8), and a step (503) is provided at the end of the outer conductor (5), and one or more sealing rings (504) are sleeved on the step (503).

6. The novel integrated bent inverted F antenna according to claim 1, characterized in that: An antenna surface (101) is arranged in the middle of the inverted F antenna structure (1), an inverted F structure (102) is arranged at the bottom of the inverted F antenna structure (1), the antenna surface (101), the inverted F structure (102) and the connecting conduit (2) are an integrated structure, a connecting hole (104) is provided at the top of the feeding end (103) of the inverted F structure (102), and the connecting hole (104) is matched and connected with a slot structure (401) at the bottom of the inner conductor (4).

7. The novel integrated bent inverted F antenna according to claim 1, characterized in that: The connection between the outer conductor (5) and the side step hole (201) is fixed by silver soldering.

8. The novel integrated bent inverted F antenna according to claim 1, characterized in that: The outer conductor (5) is made of lead brass HPb59-1 material, and the plating material of the outer conductor (5) is selected from gold, nickel or silver according to requirements.

9. The novel integrated bent inverted F antenna according to claim 1, characterized in that: The inner conductor (4) is made of beryllium bronze QBe2 material, and the plating material of the inner conductor (4) is gold.

10. The novel integrated bent inverted F antenna according to claim 1, characterized in that: The insulator (3) and the insulating sleeve (6) are made of polytetrafluoroethylene SFBN-1 material.

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