CN211320322U - Ceiling antenna unit of 5GNR frequency channel - Google Patents
Ceiling antenna unit of 5GNR frequency channel Download PDFInfo
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- CN211320322U CN211320322U CN202020140505.9U CN202020140505U CN211320322U CN 211320322 U CN211320322 U CN 211320322U CN 202020140505 U CN202020140505 U CN 202020140505U CN 211320322 U CN211320322 U CN 211320322U
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Abstract
The utility model relates to the technical field of wireless communication, in particular to a ceiling antenna unit with a 5GNR frequency band, which comprises a PCB board, a coaxial line and a radiator; the PCB is provided with an antenna feed point, a microstrip line feed network and a plurality of jacks; the coaxial line is connected with the antenna feed point; the microstrip line feed network comprises a power division network; the antenna feed point is connected with the jack through a power distribution network; the radiator comprises a radiation body and a plurality of radiation pins arranged on the radiation body; the radiation pins are arranged on the radiation body at equal intervals; the radiation pins are inserted into the jacks. In the embodiment, the microstrip line feed network is arranged on the PCB, so that the impedance bandwidth of the antenna can be greatly improved by adjusting the size of the microstrip line feed network.
Description
Technical Field
The utility model relates to a wireless communication technology field, concretely relates to ceiling antenna unit of 5GNR frequency channel.
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.
Cater for 5GNR applications, there are also roughly three categories of 5GNR related products depending on the installation: desktop type products, ceiling type products and wall hanging or pole holding type products. Various products have different requirements on antenna performance.
The ceiling-mounted product is required to have the characteristics of wide band, omni-directionality and small downward inclination angle, and is also difficult in antenna design.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned not enough among the prior art, provide a ceiling antenna unit of 5GNR frequency channel.
The purpose of the utility model is realized through the following technical scheme: a ceiling antenna unit with a 5GNR frequency band comprises a PCB, a coaxial line and a radiator; the PCB is provided with an antenna feed point, a microstrip line feed network and a plurality of jacks; the coaxial line is connected with the antenna feed point; the microstrip line feed network comprises a power division network; the antenna feed point is connected with the jack through a power distribution network;
the radiator comprises a radiation body and a plurality of radiation pins arranged on the radiation body; the radiation pins are arranged on the radiation body at equal intervals; the radiation pins are inserted into the jacks.
The utility model is further arranged that the shape of the radiation body is round; the radiation pins are arranged at equal intervals along the circumferential direction of the radiation body.
The utility model is further arranged that the antenna feed point and the microstrip line feed network are both arranged on the reverse side of the PCB; the front surface of the PCB is provided with a microstrip line ground; the ground of the microstrip line is connected with the antenna feed point.
The utility model is further configured that the antenna feed point comprises a signal feed point and a grounding feed point; the core layer of the coaxial line is connected with the signal feed point; the braid layer of the coaxial line is connected with the grounding feed point; the signal feed point is connected with the power distribution network; the grounding feed point is connected with the ground of the microstrip line.
The utility model is further arranged that a through hole is arranged between the grounding feed point and the ground of the microstrip line; and the grounding feed point is connected with the ground of the microstrip line by copper deposition on the through hole.
The utility model is further arranged that the number of the jacks and the radiation pins is four; the power distribution network comprises a first T-shaped power divider, a second T-shaped power divider and a third T-shaped power divider; the input end of the first T-shaped power divider is connected with an antenna feed point; two output ends of the first T-shaped power divider are respectively connected with an input end of a second T-shaped power divider and an input end of a third T-shaped power divider; two output ends of the second T-shaped power divider are respectively connected with two jacks; and two output ends of the third T-shaped power divider are respectively connected with the other two jacks.
The utility model is further configured that the microstrip line feed network further comprises a matching section; the matching section is connected with the first T-shaped power divider.
The utility model discloses further set up as, the diameter of radiating body is the half wavelength of center frequency.
The utility model has the advantages that: in the embodiment, the microstrip line feed network is arranged on the PCB, so that the impedance bandwidth of the antenna can be greatly improved by adjusting the size of the microstrip line feed network.
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 an exploded view of the present invention;
fig. 2 is a front view of the PCB of the present invention;
FIG. 3 is a reverse side view of the PCB of the present invention;
wherein: 1-a PCB board; 11-a jack; 12-microstrip line ground; 13-a through hole; 2-coaxial line; 31-a radiating body; 32-radiating pins; 41-signal feed point; 42-ground feed; 51-a first T-type power divider; 52-a second T-type power divider; 53-third T-shaped power divider; 6-matching section.
Detailed Description
The invention will be further described with reference to the following examples.
As can be seen from fig. 1 to 3, the ceiling antenna unit with 5GNR frequency band according to the present embodiment includes a PCB board 1, a coaxial line 2 and a radiator; the PCB board 1 is provided with an antenna feed point, a microstrip line feed network and a plurality of jacks 11; the coaxial line 2 is connected with an antenna feed point; the microstrip line feed network comprises a power division network; the antenna feed point is connected with the jack 11 through a power distribution network;
the radiator comprises a radiation body 31 and a plurality of radiation pins 32 arranged on the radiation body 31; the radiating pins 32 are arranged on the radiating body 31 at equal intervals; the radiating pins 32 are plugged into the jacks 11.
Specifically, the ceiling antenna unit in the 5GNR band described in this embodiment is provided with the microstrip line feed network, and the size of the microstrip line feed network can be adjusted, so that the impedance bandwidth of the antenna is greatly improved, the requirements of the 5GNR band 3300 and 6000MHz are completely met, and the standing-wave ratio of the ceiling antenna unit in the band range can be less than 2.0.
Naturally, other frequency bands required may be covered by adjusting the specific size in accordance with the present embodiment.
In addition, in the present embodiment, four paths of in-phase feeding are performed on the radiation body 31 through the power division network, which is beneficial to optimizing the omni-directionality of the radiation pattern, and the out-of-roundness is less than 6 dBi.
The antenna array can be installed in the whole machine under different environments as an independent array unit, and the antenna does not share the ground of the whole machine, so that the downward inclination angle of the antenna can be reduced.
In addition, the present embodiment can make the antenna resonate out a low frequency band by adding the auxiliary structure around the antenna, so as to achieve the purpose of forming a dual-frequency or multi-frequency ceiling antenna unit.
In the ceiling antenna unit with a 5GNR frequency band according to this embodiment, the shape of the radiation body 31 is circular; the radiation pins 32 are arranged at equal intervals in the circumferential direction of the radiation body 31. The arrangement is beneficial to optimizing the omni-directionality of the radiation pattern, and the out-of-roundness is less than 6 dBi.
In the top-absorbing antenna unit with a 5GNR frequency band according to this embodiment, the antenna feed point and the microstrip line feed network are both disposed on the reverse side of the PCB board 1; the front surface of the PCB 1 is provided with a microstrip line ground 12; the microstrip line ground 12 is connected to an antenna feed point. The arrangement makes the structure of the ceiling antenna unit more compact.
In the ceiling antenna unit with a 5GNR frequency band according to this embodiment, the antenna feed point includes a signal feed point 41 and a ground feed point 42; the core layer of the coaxial line 2 is connected with the signal feed point 41; the braid of the coaxial wire 2 is connected with the ground feed point 42; the signal feed point 41 is connected with the power distribution network; the ground feed point 42 is connected to the microstrip line ground 12. The coaxial line 2, the power division network connection and the microstrip line ground 12 are connected through the arrangement.
In the ceiling antenna unit with a 5GNR frequency band according to this embodiment, a through hole 13 is disposed between the ground feed point 42 and the ground 12 of the microstrip line; the ground feed point 42 is connected to the microstrip line ground 12 by depositing copper on the via 13. The connection between the ground feed point 42 and the microstrip line ground 12 is achieved by the above arrangement.
In the top-absorbing antenna unit with a 5GNR frequency band according to this embodiment, the number of the jacks 11 and the number of the radiation pins 32 are four; the power distribution network comprises a first T-type power divider 51, a second T-type power divider 52 and a third T-type power divider 53; the input end of the first T-shaped power divider 51 is connected to an antenna feed point; two output ends of the first T-type power divider 51 are respectively connected to an input end of the second T-type power divider 52 and an input end of the third T-type power divider 53; two output ends of the second T-shaped power divider 52 are respectively connected to two of the jacks 11; two output ends of the third T-shaped power divider 53 are connected to the other two jacks 11, respectively. The four-path in-phase feeding of the radiation body 31 is realized through the arrangement, the omnidirectional of the radiation directional diagram is favorably optimized, and the out-of-roundness is smaller than 6 dBi.
In the top-absorbing antenna unit with a 5GNR frequency band according to this embodiment, the microstrip line feed network further includes a matching section 6; the matching section 6 is connected to a first T-shaped power divider 51. The impedance of the ceiling antenna unit is convenient to adjust and adjust by arranging the matching section 6.
In the top-absorbing antenna unit with a 5GNR frequency band according to this embodiment, the diameter of the radiation body 31 is one-half wavelength of the center frequency. The above arrangement is advantageous for improving the impedance 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 (8)
1. A ceiling antenna unit of 5GNR frequency channel which characterized in that: the coaxial cable comprises a PCB (printed circuit board) (1), a coaxial cable (2) and a radiator; the PCB (1) is provided with an antenna feed point, a microstrip line feed network and a plurality of jacks (11); the coaxial line (2) is connected with an antenna feed point; the microstrip line feed network comprises a power division network; the antenna feed point is connected with the jack (11) through a power distribution network;
the radiator comprises a radiation body (31) and a plurality of radiation pins (32) arranged on the radiation body (31); the radiation pins (32) are arranged on the radiation body (31) at equal intervals; the radiation pins (32) are plugged with the jacks (11).
2. The ceiling antenna unit of 5GNR frequency band according to claim 1, wherein: the shape of the radiating body (31) is circular; the radiation pins (32) are arranged at equal intervals along the circumferential direction of the radiation body (31).
3. The ceiling antenna unit of 5GNR frequency band according to claim 1, wherein: the antenna feed point and the microstrip line feed network are arranged on the reverse side of the PCB (1); the front surface of the PCB (1) is provided with a microstrip line ground (12); the microstrip line ground (12) is connected with the antenna feed point.
4. A 5GNR frequency band ceiling antenna unit according to claim 3, characterized in that: the antenna feed points comprise a signal feed point (41) and a ground feed point (42); the core layer of the coaxial line (2) is connected with the signal feed point (41); the braided layer of the coaxial line (2) is connected with the grounding feed point (42); the signal feed point (41) is connected with the power distribution network; the grounding feed point (42) is connected with the microstrip line ground (12).
5. The ceiling antenna unit of 5GNR frequency band according to claim 4, wherein: a through hole (13) is arranged between the grounding feed point (42) and the microstrip line ground (12); the grounding feed point (42) is connected with the microstrip line ground (12) through copper deposition on the through hole (13).
6. The ceiling antenna unit of 5GNR frequency band according to claim 1, wherein: the number of the jacks (11) and the number of the radiation pins (32) are four; the power distribution network comprises a first T-shaped power divider (51), a second T-shaped power divider (52) and a third T-shaped power divider (53); the input end of the first T-shaped power divider (51) is connected with an antenna feed point; two output ends of the first T-shaped power divider (51) are respectively connected with an input end of a second T-shaped power divider (52) and an input end of a third T-shaped power divider (53); two output ends of the second T-shaped power divider (52) are respectively connected with two jacks (11); and two output ends of the third T-shaped power divider (53) are respectively connected with the other two jacks (11).
7. The ceiling antenna unit of 5GNR frequency band according to claim 6, wherein: the microstrip line feed network further comprises a matching section (6); the matching section (6) is connected with a first T-shaped power divider (51).
8. The ceiling antenna unit of 5GNR frequency band according to claim 2, wherein: the diameter of the radiating body (31) is one half wavelength of the center frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140505.9U CN211320322U (en) | 2020-01-21 | 2020-01-21 | Ceiling antenna unit of 5GNR frequency channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140505.9U CN211320322U (en) | 2020-01-21 | 2020-01-21 | Ceiling antenna unit of 5GNR frequency channel |
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| CN211320322U true CN211320322U (en) | 2020-08-21 |
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| CN202020140505.9U Active CN211320322U (en) | 2020-01-21 | 2020-01-21 | Ceiling antenna unit of 5GNR frequency channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113991295A (en) * | 2021-11-12 | 2022-01-28 | 京信射频技术(广州)有限公司 | Vehicle-mounted antenna |
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2020
- 2020-01-21 CN CN202020140505.9U patent/CN211320322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113991295A (en) * | 2021-11-12 | 2022-01-28 | 京信射频技术(广州)有限公司 | Vehicle-mounted antenna |
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