CN210778979U

CN210778979U - Novel ultra-wideband antenna

Info

Publication number: CN210778979U
Application number: CN201922026470.6U
Authority: CN
Inventors: 黄勇明; 张英杰; 蒋朝东; 张湘
Original assignee: Shenzhen Electric Connector Technology Co Ltd
Current assignee: Shenzhen Electric Connector Technology Co Ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-06-16
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a novel ultra-wideband antenna, which is fed by a coaxial line and is used for being installed on a base body with a reflecting ground, comprising a grounding sheet and a symmetrical pole unit, wherein a gap is formed between the grounding sheet and the symmetrical pole unit; a feeding point is arranged at the position, close to the grounding plate, of the middle part of the symmetrical pole unit, a feeding point is arranged at the position, close to the feeding point, of the grounding plate, one tail end of the grounding plate is provided with a first contact electrically connected with the reflection ground, and the other tail end of the grounding plate is provided with a second contact electrically connected with an outer shielding wire of the coaxial feeder line; the symmetrical pole unit comprises two symmetrical poles separated by an antenna gap arranged at the middle position, and each symmetrical pole is provided with an inner cavity and extends into the inner cavity to form an inverted L-shaped branch of the antenna. The utility model discloses simple structure possesses advantages such as better bandwidth, radiant efficiency, high gain.

Description

Novel ultra-wideband antenna

Technical Field

The utility model relates to the field of communication technology, especially, relate to a novel ultra wide band antenna.

Background

With the increasing requirement for the broadband of communication equipment, the ultra-wideband communication has many advantages of large communication capacity, good confidentiality, small average power density, strong anti-multipath interference capability and the like, and is the development direction of the communication system in the 21 st century, and the development of the ultra-wideband communication also requires the ultra-wideband antenna technology adapted to the development direction.

The demand of wireless communication is increasing, and the ultra-wideband wireless communication technology is receiving attention due to its advantages of low power consumption, high bandwidth, low complexity, etc., and the popularization of 4G worldwide adopts different standards and frequency bands in different countries. The domestic science and technology service industry is continuously exported abroad, and in addition to the rise of the Internet of things, narrow-band ranges of different frequency bands of different operators and users are limited to the suppression of the communication cost of the Internet of things, and the future antenna is a great trend of a full-band antenna.

In addition, the functionality of wireless devices is continually enhanced, such as mobile workstations, internet of things devices, outdoor equipment, and the like. The integration level is improved, meanwhile, electromagnetic environment pollution is caused, working signals of the whole machine are influenced, or some irrelevant signals need to be shielded in a specific occasion. Therefore, the ultra-wideband antenna is widely used in examination room shielding, data acquisition, radio frequency identification and other systems.

However, the bandwidth of the low-frequency part of the common ultra-wideband antenna needs a plurality of antennas to be realized, or the bandwidth is relatively single, the cost is high, the occupied space is large, and the installation is not easy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above problems, the main object of the present invention is to provide a novel ultra-wideband antenna with better bandwidth, high efficiency and high gain, the technical solution adopted by the present invention is to provide a novel ultra-wideband antenna, which is fed by a coaxial line and is used for being installed on a substrate with a reflective ground, and comprises a grounding plate and a symmetric pole unit, wherein a gap is formed between the grounding plate and the symmetric pole unit; a feeding point is arranged at the position, close to the grounding plate, of the middle part of the symmetrical pole unit, a feeding point is arranged at the position, close to the feeding point, of the grounding plate, one tail end of the grounding plate is provided with a first contact electrically connected with the reflection ground, and the other tail end of the grounding plate is provided with a second contact electrically connected with an outer shielding wire of the coaxial feeder line; the symmetrical pole unit comprises two symmetrical poles separated by an antenna gap arranged at the middle position, and each symmetrical pole is provided with an inner cavity and extends into the inner cavity to form an inverted L-shaped branch of the antenna.

Preferably, the first contact of the ground plate is electrically connected to the reflective ground through a metal plate.

Compared with the prior art, the utility model provides a pair of novel ultra wide band antenna scheme, the frequency band scope can cover 130 and give other care to 600MHz and 700 and give other care to 6000MHz for the performance that originally realizes by a plurality of antennas just can realize with a single antenna, and the antenna has characteristics such as better bandwidth, radiant efficiency, high gain.

Drawings

Fig. 1 is a schematic front structural diagram of an ultra-wideband antenna according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a metal sheet used in an ultra-wideband antenna according to an embodiment of the present invention.

Fig. 3 is a simulation diagram of a maximum gain curve of an ultra-wideband antenna according to an embodiment of the present invention.

Fig. 4 is an antenna efficiency curve simulation diagram of an ultra-wideband antenna according to an embodiment of the present invention.

Fig. 5 is a simulation diagram of an antenna standing-wave ratio curve of an ultra-wideband antenna according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1, a novel ultra-wideband antenna according to an embodiment of the present invention is provided, which is fed by a coaxial line (not shown in the figure) including a core wire and an external shielding wire and is installed on a substrate (not shown in the figure) having a reflective ground, and includes a ground plate 1 and a symmetric pole unit 2, wherein a gap d is formed between the ground plate 1 and the symmetric pole unit 2; a feeding point 20 is arranged at the middle part of the symmetrical pole unit 2 close to the grounding plate, a feeding point 10 is arranged at the position on the grounding plate 1 close to the feeding point 20, a first contact 11 electrically connected with the reflection ground is arranged at one end of the grounding plate 1, a second contact 12 electrically connected with an external shielding wire (not shown in the figure) of a coaxial feeder is arranged at the other end of the grounding plate 1, so as to be grounded with the coaxial wire in a windowing way, and the antenna performance of the low-frequency part can be coupled and enhanced through the arrangement; the symmetric pole unit 2 includes two

symmetric poles

21a and 21b for realizing low frequency radiation, and an antenna slot x is disposed at a middle position of the two symmetric poles to separate them, so as to adjust a bandwidth of a low frequency band, each of the

symmetric poles

21a or 21b has an inner cavity 22a or 22b and extends into the inner cavity 22a or 22b to form an inverted L-shaped branch 23a or 23b of the antenna, thereby further enhancing a radiation performance of the antenna.

In this embodiment, the first contact 11 of the grounding plate is electrically connected to the reflective ground through a metal plate 3, the metal plate 3 is usually a steel plate, the bottom 31 of which is soldered to the substrate and electrically connected to the reflective ground, and the top 32 of which is electrically connected to the first contact 11, as shown in fig. 2.

The above various size settings are calculated by the design of simulation software, such as CST, according to the resonant frequency and bandwidth of the antenna, thereby achieving the maximum radiation effect, such as radiation bandwidth, the antenna effect of the utility model is as shown in the simulation of fig. 3-5, the gain of the antenna can reach 5.15dBi, the frequency range is 130 plus materials 600MHz, 700 plus materials 6000MHz, the bandwidth is 5770MHz, thereby satisfying the use requirements.

To sum up, the utility model discloses a novel ultra wide band antenna realizes that the standing wave is little on simple low-cost basis, and the gain is high, can satisfy its small, the wide requirement of range of application.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A novel ultra-wideband antenna is fed by a coaxial line and is used for being installed on a substrate with a reflecting ground, and the novel ultra-wideband antenna is characterized by comprising a grounding sheet and a symmetrical pole unit, wherein a gap is formed between the grounding sheet and the symmetrical pole unit; a feeding point is arranged at the position, close to the grounding plate, of the middle part of the symmetrical pole unit, a feeding point is arranged at the position, close to the feeding point, of the grounding plate, one tail end of the grounding plate is provided with a first contact electrically connected with the reflection ground, and the other tail end of the grounding plate is provided with a second contact electrically connected with an outer shielding wire of the coaxial feeder line; the symmetrical pole unit comprises two symmetrical poles separated by an antenna gap arranged at the middle position, and each symmetrical pole is provided with an inner cavity and extends into the inner cavity to form an inverted L-shaped branch of the antenna.

2. The novel ultra-wideband antenna of claim 1, wherein said first contact of said ground plate is electrically connected to said reflective ground through a metal plate.