CN211578965U

CN211578965U - Improved 5GNR full-frequency-band antenna

Info

Publication number: CN211578965U
Application number: CN202020140730.2U
Authority: CN
Inventors: 罗建军; 姚定军
Original assignee: Jiangxi Renfu Electronic Technology Co ltd
Current assignee: Jiangxi Renfu Electronic Technology Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-09-25
Anticipated expiration: 2030-01-21

Abstract

The utility model relates to the technical field of wireless communication, in particular to an improved 5GNR full-band antenna, which comprises a PCB, a coaxial line and a magnetic ring; the PCB is sequentially provided with a choke sleeve, a radiator, a first coupling patch and a second coupling patch from bottom to top; a CPW transmission line is arranged in the choking sleeve; the CPW transmission line comprises an outer conductor and a gradual change type inner conductor arranged in the outer conductor; one end of the outer conductor is connected with a braided layer of the coaxial line; the other end of the outer conductor is connected with the choke sleeve; one end of the gradual change type inner conductor is connected with the wire core layer of the coaxial wire; the other end of the gradual change type inner conductor is connected with the radiator; the magnetic ring is sleeved on the coaxial line. In the embodiment, the impedance bandwidth of the antenna can be greatly improved by the measures of widening the bandwidth of the antenna, such as the arrangement of the magnetic ring, the first coupling patch, the second coupling patch, the gradual change type CPW transmission line and the like.

Description

Improved 5GNR full-frequency-band antenna

Technical Field

The utility model relates to a wireless communication technology field, concretely relates to modified 5 GNR's full frequency channel antenna.

Background

The 5GNR is a global 5G standard based on a completely new air interface design of OFDM, and the main advantage of 5G networks is that the data transmission rate is much higher than that of previous cellular networks, up to 10 Gbit/s. Another advantage is lower network delay (faster response time), below 1 millisecond, and 30-70 milliseconds for 4G.

The 3GPP RAN conference 12 months in 2019 again broadens the 5GNR spectrum:

two frequency bands of 5 GNR: FR 1: 410MHz-7125MHz and FR 2: 24250MHz-52600MHz

The three application scenarios of 5GNR are as follows:

eMBB (enhanced Mobile broadband), the enhanced Mobile broadband, can realize Gbps Mobile broadband data access, three-dimensional stereo video, cloud work, cloud entertainment, augmented reality, etc.

URLLC (ultra Reliable Low Latency communications), large-scale machine type communication, mainly for the Internet of things, intelligent home, intelligent city, intelligent building, etc.

mMTC (passive Machine Type communications), ultra-high reliability and low-delay communication, and the application direction is unmanned, telemedicine, industrial automation, emergency task application, and the like.

The requirements of the 5GNR technology on the antenna are mainly focused on two points, one is ultra-wideband, the frequency range covered by the 5GNR is very wide, and how to widen the antenna bandwidth is a difficult point of antenna design. Secondly, the efficiency is high, and the requirement of the ultra wide band causes that the higher radiation efficiency of the antenna is very difficult to be ensured in the working bandwidth range. Thirdly, miniaturization, the low-frequency part of 5GNR is as low as 410MHz, and how to reduce the size of the antenna under the condition of ensuring high radiation efficiency of low frequency is also a difficulty of antenna technology. In order to ensure the low-frequency radiation efficiency of the antenna on the market, the width of the antenna is 50mm at most, and the antenna is not attractive.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned not enough among the prior art, provide a modified 5 GNR's full frequency channel antenna.

The purpose of the utility model is realized through the following technical scheme: an improved 5GNR full-band antenna comprises a PCB, a coaxial line and a magnetic ring; the PCB is sequentially provided with a choke sleeve, a radiator, a first coupling patch and a second coupling patch from bottom to top; a CPW transmission line is arranged in the choking sleeve; the CPW transmission line comprises an outer conductor and a gradual change type inner conductor arranged in the outer conductor;

one end of the outer conductor is connected with a braided layer of the coaxial line; the other end of the outer conductor is connected with the choke sleeve; one end of the gradual change type inner conductor is connected with the wire core layer of the coaxial wire; the other end of the gradual change type inner conductor is connected with the radiator; the magnetic ring is sleeved on the coaxial line.

The utility model discloses further set up to, be equipped with first coupling gap between irradiator and the first coupling paster.

The utility model discloses further set up to, be equipped with second coupling gap between first coupling paster and the second coupling paster.

The utility model discloses further set up to, the opening direction of choke cover upwards sets up.

The utility model discloses further set up as, be equipped with the straightway between the other end of gradual change formula inner conductor and the irradiator.

The utility model discloses further set up to, the width that gradual change formula inner conductor is close to coaxial line one end to the width that gradual change formula inner conductor is close to the irradiator reduce gradually.

The utility model has the advantages that: in the embodiment, by means of measures of widening the bandwidth of the antenna, such as the arrangement of the magnetic ring, the first coupling patch, the second coupling patch, the gradual change type CPW transmission line and the like, the impedance bandwidth of the antenna can be greatly improved, the requirements of the 5GNR global frequency band 617 and 7125MHz can be completely met, and the standing-wave ratio can be less than 3.0 within the global frequency band range.

Drawings

The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.

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

wherein: 1. a PCB board; 2. a coaxial line; 3. a magnetic ring; 4. a choke sleeve; 5. a radiator; 61. a first coupling patch; 62. a second coupling patch; 71. an outer conductor; 72. an inner conductor; 81. a first coupling slot; 82. a second coupling gap; 9. a straight line segment.

Detailed Description

The invention will be further described with reference to the following examples.

As shown in fig. 1, the improved 5GNR full band antenna according to the present embodiment includes a PCB, a coaxial cable 2 and a magnetic ring 3; the PCB is sequentially provided with a choke sleeve 4, a radiator 5, a first coupling patch 61 and a second coupling patch 62 from bottom to top; a CPW transmission line is arranged in the choke sleeve 4; the CPW transmission line comprises an outer conductor 71 and a gradual change type inner conductor 72 arranged in the outer conductor 71;

one end of the outer conductor 71 is connected with the braided layer of the coaxial wire 2; the other end of the outer conductor 71 is connected with the choke sleeve 4; one end of the gradual change type inner conductor 72 is connected with the core layer of the coaxial line 2; the other end of the gradual change type inner conductor 72 is connected with the radiator 5; the magnetic ring 3 is sleeved on the coaxial line 2.

Specifically, in the improved 5GNR full-band antenna according to this embodiment, the magnetic ring 3 is disposed on the coaxial line 2, which is beneficial to control the low-frequency current and simultaneously optimizes the impedance bandwidth of the low-frequency portion; in addition, due to the measures of widening the bandwidth of the antenna, such as the arrangement of the magnetic ring 3, the first coupling patch 61, the second coupling patch 62, the gradual change type CPW transmission line and the like, the impedance bandwidth of the antenna can be greatly improved, the requirements of 5GNR global frequency band 617 plus 7125MHz are completely met, and the standing-wave ratio can be less than 3.0 within the range of the global frequency band; in addition, the antenna has wide impedance bandwidth and high radiation efficiency, so that the width of the antenna PCB can be greatly reduced. The widths of the 5GNR antenna PCB boards which are common in the market are all more than 20mm, and even more, the widths of the PCB boards are as wide as 50 mm. The width of the PCB can be reduced to 17mm by the embodiment; in addition, the measure for widening the bandwidth adopted by the embodiment is a measure having the smallest influence on the antenna efficiency, so that the higher antenna efficiency is ensured under the condition of ensuring the antenna bandwidth, the low frequency can reach 30-40%, and the high frequency can be higher than 50%.

In the improved 5GNR full-band antenna according to this embodiment, a first coupling slot 81 is disposed between the radiator 5 and the first coupling patch 61. The high-frequency bandwidth of the antenna is widened by the coupling slot.

In the modified 5GNR full-band antenna according to this embodiment, a second coupling slot 82 is disposed between the first coupling patch 61 and the second coupling patch 62. The high-frequency bandwidth of the antenna is widened by the coupling slot.

In the modified 5GNR full-band antenna of this embodiment, the opening direction of the choke sleeve 4 is set upward. The structure of the antenna is more reasonable due to the arrangement.

In the improved 5GNR full band antenna of this embodiment, a straight line segment 9 is disposed between the other end of the gradually changing inner conductor 72 and the radiator 5. The above arrangement is advantageous in widening the bandwidth of the antenna.

In the improved 5GNR full band antenna of this embodiment, the width of the inner conductor 72 near the coaxial line 2 gradually decreases from the width of the inner conductor 72 near the radiator 5. The above arrangement is advantageous in widening the bandwidth of the antenna.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An improved 5GNR full band antenna, comprising: comprises a PCB, a coaxial line (2) and a magnetic ring (3); the PCB is sequentially provided with a choke sleeve (4), a radiator (5), a first coupling patch (61) and a second coupling patch (62) from bottom to top; a CPW transmission line is arranged in the choke sleeve (4); the CPW transmission line comprises an outer conductor (71) and a gradual change type inner conductor (72) arranged in the outer conductor (71);

one end of the outer conductor (71) is connected with a braided layer of the coaxial line (2); the other end of the outer conductor (71) is connected with the choke sleeve (4); one end of the gradual change type inner conductor (72) is connected with the wire core layer of the coaxial wire (2); the other end of the gradual change type inner conductor (72) is connected with a radiator (5); the magnetic ring (3) is sleeved on the coaxial line (2).

2. An improved 5GNR full band antenna as defined by claim 1, wherein: a first coupling gap (81) is arranged between the radiator (5) and the first coupling patch (61).

3. An improved 5GNR full band antenna as defined by claim 1, wherein: a second coupling gap (82) is arranged between the first coupling patch (61) and the second coupling patch (62).

4. An improved 5GNR full band antenna as defined by claim 1, wherein: the opening direction of the choke sleeve (4) is arranged upwards.

5. An improved 5GNR full band antenna as defined by claim 1, wherein: a straight line section (9) is arranged between the other end of the gradual change type inner conductor (72) and the radiator (5).

6. An improved 5GNR full band antenna as defined by claim 1, wherein: the width of one end of the gradual change type inner conductor (72) close to the coaxial line (2) is gradually reduced to the width of the gradual change type inner conductor (72) close to the radiator (5).