CN112821026A

CN112821026A - Novel ultra-wideband omnidirectional antenna

Info

Publication number: CN112821026A
Application number: CN202011629608.2A
Authority: CN
Inventors: 周多; 周厚明
Original assignee: Wuhan Tianshengbo Electronic Technology Co ltd
Current assignee: Wuhan Tianshengbo Electronic Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-18

Abstract

The invention relates to the technical field of mobile communication and discloses a novel ultra wide band omnidirectional antenna. The novel ultra-wideband omnidirectional antenna comprises a metal disc and an SMA (shape memory alloy) joint, wherein the metal disc is connected with a metal base through a support column, a metal spacer is arranged between the metal disc and the metal base, the top of the metal spacer is fixedly connected with the bottom surface of the metal disc through a copper rivet, the SMA joint is connected with a grounding flange through a bolt, and a transverse plate at the bottom of the grounding flange is connected with the metal base through a screw.

Description

Novel ultra-wideband omnidirectional antenna

Technical Field

The invention relates to the technical field of mobile communication, in particular to a novel ultra wide band omnidirectional antenna.

Background

Nowadays, science and technology are changing day by day in the world, wherein the development of communication, electronic countermeasure and navigation industries is particularly rapid, and therefore higher and higher requirements are also put forward on the indexes of the antenna, especially on the aspects of broadband characteristics (standing wave, directional diagram and gain), cross polarization characteristics, main lobe beam width fluctuation along with frequency, beam convergence characteristics and the like.

Conventional omni-directional antennas are widely used in various fields of mobile communication, electronic countermeasure, and navigation. The antenna is generally composed of vertical symmetric oscillators, monopoles and derivatives thereof, and has the advantages that the omni-directionality in a frequency band is relatively good (the out-of-roundness is generally within 3 dB), but the antenna has a plurality of defects, namely firstly, the gain in a pass band is not high (generally about 3 dBi), and secondly, the most important point is that the bandwidth of the antenna is too narrow, so that the requirement of ultra-wideband communication cannot be met; meanwhile, the size of the conventional antenna is too large to meet the current demand for integration, so that a novel ultra-wideband omnidirectional antenna is urgently needed to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a novel ultra-wideband omnidirectional antenna which has the advantages of high gain, ultra-wide bandwidth, small size and the like, and solves the problems of low gain, narrow bandwidth and large size of the traditional omnidirectional antenna.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel ultra wide band omnidirectional antenna, includes that metal disc and SMA connect, the metal disc passes through the support column and is connected with metal base, install the metal spacing block between metal disc and the metal base, copper rivet and metal disc bottom surface fixed connection are passed through at metal spacing block top.

The SMA connects and passes through bolt and ground flange connection, ground flange bottom diaphragm passes through the screw and is connected with metal base, the SMA connects and is connected with coaxial cable's one end, and coaxial cable's the other end passes through copper rivet with the metal spacing block and is connected, and coaxial cable's outer conductor and metal base welding, the metal spacing block passes through the plastics cushion and is connected with metal base, and the one end that coaxial cable is close to the metal spacing block is equipped with the support checkpost, the support checkpost passes through the screw and is connected with metal base.

Preferably, the rear end of the bottom of the metal spacer is arranged in an L shape, and the metal spacer is fixedly connected with the metal base through a screw.

Through above-mentioned technical scheme, thereby metal spacer passes through screw fixed connection with the metal base, thereby forms the short circuit and realizes that the antenna is miniaturized.

Preferably, the lower end of the supporting column is arranged in a bottom mounting hole formed in the metal base, and the upper end of the supporting column is arranged in a mounting hole correspondingly formed in the metal disc.

Preferably, the metal base comprises a metal ground plate, a feed flange and an outer conductor welding block, and the support column is a dielectric support column.

Preferably, the outer conductor solder bump is the same diameter as the coaxial cable.

Preferably, the feed flange is the same size as the ground flange.

Compared with the prior art, the invention provides a novel ultra wide band omnidirectional antenna, which has the following beneficial effects:

the metal disc is arranged on the metal base through the support column, one side of the lower surface of the vertical metal isolation sheet is made into an L shape, the metal disc and the metal base are fixed together through screws, and the other side of the metal disc is provided with a feed copper rivet to realize feed, so that an integral radiator is formed to realize vertical polarized omnidirectional radiation; the working frequency is changed through the sizes of the metal disc and the metal spacer, and the low profile and miniaturization are realized through the L-shaped grounding of one side under the metal spacer, so that the omnidirectional antenna has the advantages of high gain, super bandwidth and small size.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention.

Wherein: 1. a metal disc; 2. an SMA joint; 3. a grounding flange; 4. a metal base; 5. a support clip; 6. a metal spacer; 7. copper rivets; 8. plastic cushion blocks; 9. a screw; 10. and (4) a support column.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a novel ultra wide band omnidirectional antenna comprises a metal disc 1 and an SMA joint 2, wherein the metal disc 1 is connected with a metal base 4 through a support column 10, a metal spacer 6 is installed between the metal disc 1 and the metal base 4, the top of the metal spacer 6 is fixedly connected with the bottom surface of the metal disc 1 through a copper rivet 7, and the copper rivet is installed on one side of the lower surface of the metal spacer, so that the welding is convenient to form the feed.

SMA connects 2 and is connected with ground flange 3 through the bolt, the diaphragm passes through screw 9 and is connected with metal base 4 in ground flange 3 bottom, SMA connects 2 and is connected with coaxial cable's one end, coaxial cable's the other end and metal spacer 6 pass through copper rivet 7 to be connected, copper rivet 7 forms the feed with coaxial cable's heart yearn welding together, coaxial cable's outer conductor and metal base 4 welding, form good ground connection, metal spacer 6 is connected with metal base 4 through plastics cushion 8, the feed point position passes through plastics cushion 8 to be supported, avoid the short circuit, coaxial cable is close to the one end of metal spacer 6 and is equipped with support checkpost 5, support checkpost 5 is connected with metal base 4 through screw 9.

Specifically, the rear end of the bottom of the metal spacer 6 is arranged in an L shape, and is fixedly connected with the metal base 4 through a screw 9.

The metal spacer 6 and the metal base 4 are fixedly connected through a screw 9 to form a short circuit, so that the antenna is miniaturized.

Specifically, the lower end of the supporting column 10 is installed in a bottom installation hole formed in the metal base 4, and the upper end of the supporting column 10 is installed in an installation hole correspondingly formed in the metal disc 1.

Specifically, the metal base 4 includes a metal ground plate, a feed flange and an outer conductor solder block, and the support column 10 is a dielectric support column.

Specifically, the outer conductor solder bump is the same diameter as the coaxial cable.

In particular, the feed flange is the same size as the ground flange 3 in order to secure the feed connection.

According to the invention, a metal disc 1 is arranged on a metal base 4 through a support column 10, one side below a vertical metal isolation sheet 6 is made into an L shape, the metal disc is fixed with the metal base 4 through a screw 9, and the other side is provided with a copper rivet 7 to realize feeding, so that an integral radiator is formed to realize vertical polarized omnidirectional radiation; the operating frequency is changed by the dimensions of the metal disc 1 and the metal spacer 6, and low profile and miniaturization are achieved by L-shaped grounding of one side under the metal spacer 6.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel ultra wide band omnidirectional antenna, includes metal disc (1) and SMA connects (2), its characterized in that: the metal disc (1) is connected with the metal base (4) through a support column (10), a metal isolating sheet (6) is installed between the metal disc (1) and the metal base (4), and the top of the metal isolating sheet (6) is fixedly connected with the bottom surface of the metal disc (1) through a copper rivet (7);

SMA connects (2) and is connected with ground flange (3) through the bolt, ground flange (3) bottom diaphragm passes through screw (9) and is connected with metal base (4), SMA connects (2) and is connected with coaxial cable's one end, and coaxial cable's the other end is connected through copper rivet (7) with metal spacing block (6), and coaxial cable's outer conductor and metal base (4) welding, metal spacing block (6) are connected with metal base (4) through plastics cushion (8), and the one end that coaxial cable is close to metal spacing block (6) is equipped with support checkpost (5), support checkpost (5) are connected with metal base (4) through screw (9).

2. The novel ultra-wideband omni-directional antenna of claim 1, wherein: the rear end of the bottom of the metal spacing sheet (6) is arranged in an L shape and is fixedly connected with the metal base (4) through a screw (9).

3. The novel ultra-wideband omni-directional antenna of claim 1, wherein: the lower end of the supporting column (10) is arranged in a bottom mounting hole formed in the metal base (4), and the upper end of the supporting column (10) is arranged in a mounting hole correspondingly formed in the metal disc (1).

4. The novel ultra-wideband omni-directional antenna of claim 1, wherein: the metal base (4) comprises a metal grounding plate, a feed flange and an outer conductor welding block, and the support column (10) is a dielectric support column.

5. The novel ultra-wideband omni-directional antenna of claim 4, wherein: the outer conductor weld block has the same diameter as the coaxial cable.

6. The novel ultra-wideband omni-directional antenna of claim 4, wherein: the feed flange and the grounding flange (3) have the same size.