CN214254745U - 5G millimeter wave differential feed dielectric resonator antenna module - Google Patents
5G millimeter wave differential feed dielectric resonator antenna module Download PDFInfo
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- CN214254745U CN214254745U CN202022737884.2U CN202022737884U CN214254745U CN 214254745 U CN214254745 U CN 214254745U CN 202022737884 U CN202022737884 U CN 202022737884U CN 214254745 U CN214254745 U CN 214254745U
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Abstract
The utility model provides a 5G millimeter wave differential feed dielectric resonator antenna module, which comprises an antenna basic unit and a PCB board; a short circuit coupling line is arranged on the PCB; the short circuit coupling line comprises a long feeder line and a short feeder line; a first side face of the antenna base unit is connected to one end of the long feeder line, and a second side face of the antenna base unit, which is opposite to the first side face, is connected to one end of the short feeder line; the other end of the long feeder line faces towards the phase difference of 180 degrees with the other end of the short feeder line, and a gap is reserved between the two ends; the utility model discloses use the short circuit coupling line as difference feed structure to the combination that uses independent antenna elementary cell and PCB board replaces the integrated whole antenna of PCB board, sets up the short circuit coupling line into the combination of long feed line and short feed line, can guarantee to export invariable phase place in certain frequency range, guarantees antenna signal's quality.
Description
Technical Field
The utility model relates to an antenna field especially relates to a 5G millimeter wave differential feed dielectric resonator antenna module.
Background
5G is a research and development focus in the global industry, and 5G standards established by accelerating the development of 5G technology have become common in the industry; the international telecommunications union ITU identified three major application scenarios for 5G at ITU-RWP5D meeting No. 22 held 6 months 2015: enhanced mobile broadband, large-scale machine communication and high-reliability low-delay communication; the 3 application scenes correspond to different key indexes respectively, wherein the peak speed of a user in the enhanced mobile bandwidth scene is 20Gbps, and the lowest user experience rate is 100 Mbps. The unique characteristics of high carrier frequency and large bandwidth of millimeter waves are the main means for realizing 5G ultrahigh data transmission rate; in addition, the space reserved for the 5G antenna in future mobile phones is smaller and smaller, and the number of selectable positions for arranging the antenna in the mobile phone is small.
According to the technical specification of 3GPP TS 38.101-25G terminal radio frequency and the technical report of TR38.817 terminal radio frequency, 5 GmWave antenna needs to cover N257(26.5-29.5GHz), N258(24.25-27.25GHz), N260(37-40GHz) and N261(27.5-28.35 GHz).
No matter the antenna form is PATCH, dipole or slot and the like, the conventional millimeter wave broadband antenna based on the PCB has the advantages that the thickness of the PCB is larger because the bandwidth is required to cover N257, N258 and N260, the number of layers is increased at the moment, and the precision requirements on hole alignment, line width and line distance of the multilayer PCB are high in the millimeter wave frequency band, so that the processing difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the 5G millimeter wave differential feed dielectric resonator antenna module is capable of reducing production difficulty and volume under the condition of meeting the existing performance requirements.
In order to solve the technical problem, the utility model discloses a technical scheme be:
A5G millimeter wave differential feed dielectric resonator antenna module comprises an antenna basic unit and a PCB board;
the PCB is provided with a short circuit coupling line; the short circuit coupling line comprises a long feeder line and a short feeder line;
a first side face of the antenna base unit is connected to one end of the long feed line, and a second side face opposite to the first side face is connected to one end of the short feed line;
the orientation of the other end of the long feeder line is different from the orientation of the other end of the short feeder line by 180 degrees;
the long feed line and the short feed line are not directly connected.
The beneficial effects of the utility model reside in that: the short-circuit coupling line is used as a differential feed structure, the combination of an independent antenna basic unit and a PCB is used for replacing the PCB to integrate the whole antenna, the short-circuit coupling line is set to be the combination of a long feeder line and a short feeder line, the constant phase output in a certain frequency range can be ensured, the quality of an antenna signal is ensured, and the differential signal output through one input is realized; the antenna part is separated from the PCB, so that the production difficulty of the PCB is reduced, the processing precision of the antenna can be improved, and more efficient signal transmission is realized.
Drawings
Fig. 1 is a schematic diagram of an antenna base unit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a PCB board according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating the assembly of the PCB board and the antenna basic unit according to the embodiment of the present invention;
fig. 4 is a schematic diagram of a scattering parameter experiment result of a 5G millimeter wave differential feed dielectric resonator antenna module according to an embodiment of the present invention;
fig. 5 is a comparison diagram of a cross polarization curve of a 5G millimeter wave differential feed dielectric resonator antenna module according to an embodiment of the present invention and a conventional microstrip feed antenna;
fig. 6 is a 3D scanning diagram of the 5G millimeter wave differential feed dielectric resonator antenna module according to the embodiment of the present invention at 28 GHz;
fig. 7 is a schematic diagram of a microstrip feed antenna of the prior art.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 6, a 5G millimeter wave differential feed dielectric resonator antenna module includes an antenna basic unit and a PCB;
the PCB is provided with a short circuit coupling line; the short circuit coupling line comprises a long feeder line and a short feeder line;
a first side face of the antenna base unit is connected to one end of the long feed line, and a second side face of the antenna base unit, which is opposite to the first side face, is connected to one end of the short feed line;
the other end of the long feeder line faces 180 degrees out of phase with the other end of the short feeder line with a gap therebetween.
From the above description, the beneficial effects of the present invention are: the short-circuit coupling line is used as a differential feed structure, the combination of an independent antenna basic unit and a PCB is used for replacing the PCB to integrate the whole antenna, the short-circuit coupling line is set to be the combination of a long feeder line and a short feeder line, the constant phase output in a certain frequency range can be ensured, the quality of an antenna signal is ensured, and the differential signal output through one input is realized; the antenna part is separated from the PCB, so that the production difficulty of the PCB is reduced, the processing precision of the antenna can be improved, and more efficient signal transmission is realized.
Furthermore, a plurality of short-circuit coupling lines are arranged on the PCB, and each short-circuit coupling line is connected with one antenna basic unit.
According to the description, the PCB integrates a plurality of antenna basic units to form the antenna module, so that the performance of the antenna is improved, data can be better received and transmitted, and the quality of the received or transmitted data is ensured.
Further, the antenna base unit is a ceramic body.
From the above description, it can be known that the antenna basic unit formed by the ceramic body is easy to achieve higher processing precision, has small volume in the millimeter wave frequency band and low cost, and has great advantages compared with the method of directly etching the antenna on the PCB board.
Further, the connection between the antenna base unit and the long feeder line and the short feeder line is detachable.
According to the description, the antenna basic unit and the short circuit coupling line on the PCB are detachable, the adaptability of the PCB is enhanced, different antenna basic units can be selected more conveniently as required to assemble the required antenna module without generating different PCBs, and the development cost of die sinking and the like is saved.
Further, the long feeder line further includes an extension piece connected to the PCB board.
As can be seen from the above description, the extension piece is connected to the PCB to realize the interaction between the short-circuit coupling line and other parts.
Furthermore, the PCB board further comprises a radio frequency chip, and the radio frequency chip is connected with the short circuit coupling line.
As can be seen from the above description, the radio frequency chip is connected to the short-circuit coupling line, so as to process the signal received by the short-circuit coupling line or send the processed signal to the short-circuit coupling line and then send the processed signal through the antenna base unit connected to the short-circuit coupling line.
Further, the radio frequency chip comprises a phase shifter, an amplifier and a matching network;
the matching network is respectively connected with one end of the long feed line far away from the antenna basic unit and one end of the short feed line far away from the antenna basic unit, the amplifier is connected with the matching network, and the phase shifter is connected with the amplifier.
As can be seen from the above description, the matching network is provided to increase the bandwidth of the antenna, the phase shifter provides phase difference between the elements to achieve beam scanning capability, and the amplifier compensates for the loss of the phase shifter.
Furthermore, the PCB board also comprises a digital integrated circuit chip, and the digital integrated circuit chip is connected with the radio frequency chip.
As can be seen from the above description, the digital integrated circuit chip is used to control the rf chip, and the digital chip sends a command to change the state value of the register in the rf chip through the external circuit, and the rf chip reads the state value in the register and changes the internal devices of the phase shifter, the amplifier, the switch, and the like, thereby implementing operations such as switching signals up/down.
Furthermore, the PCB board further comprises a power chip, and the power chip is respectively connected with the extension sheet, the radio frequency chip and the digital integrated circuit chip.
From the above description, the power supply chip is connected to the extension sheet, the rf chip and the digital ic chip, so as to supply power to each part and ensure the normal operation of each part.
Furthermore, the PCB board also comprises a shielding column.
As can be seen from the above description, the shielding columns are provided to reduce mutual interference between differential signals, thereby further improving the quality of the signals.
Referring to fig. 1, a first embodiment of the present invention is:
A5G millimeter wave differential feed dielectric resonator antenna module,
comprises an antenna basic unit and a PCB board;
the PCB is provided with a short circuit coupling line, and the short circuit coupling line comprises a long feeder line and a short feeder line;
a first side face of the antenna base unit is connected with one end of the long feed line, a second side face of the antenna base unit opposite to the first side face is connected with one end of the short feed line, and the antenna base unit is detachably connected with the long feed line and the short feed line;
in an optional embodiment, the antenna basic unit is a cuboid and is made of ceramic;
in an alternative embodiment, the antenna base unit may be a hemisphere or a cylinder;
as can be seen from the above description, the shape of the antenna basic unit does not affect the implementation effect of the present invention;
the other end of the long feeder line faces towards the phase difference of 180 degrees with the other end of the short feeder line with a gap between the two ends;
the PCB is provided with a plurality of short-circuit coupling lines, and each short-circuit coupling line is connected with an antenna basic unit;
the PCB is also provided with a shielding column which surrounds 4 strip transmission lines, wherein the strip transmission lines are single-ended signal lines, so that energy transmission loss can be reduced;
the short-circuit coupling line is used for outputting differential signals with 180-degree opposite phases and converting single-ended signals into differential signals, a balun with 1/2 wavelength can be used in a general circuit, namely a microstrip feeder line circuit, but the phase difference of the output dual-port phase along with frequency change is large in fluctuation of 180 degrees, and the fluctuation of the short-circuit coupling structure along with the frequency change is small; for example: the working frequency of the antenna is 27-29GHZ, the phase difference of signals at 27GHZ of the balun with 1/2 wavelengths is 200 degrees, the phase difference of signals at 28GHZ is 180 degrees, and the phase difference at 29GHZ is 170 degrees; the output phase difference of the short-circuit coupling line in the embodiment is 180 degrees in a signal interval of 27-29GHZ, and the constant 180-degree phase difference can be output basically in a narrow frequency range;
referring to fig. 4, it can be seen that the N257 frequency band is covered for the S parameter (scattering parameter) of the 5G millimeter wave differential feed dielectric resonator antenna module in this embodiment, which can meet the use requirement;
referring to fig. 5, a curve with a starting point ordinate between-20 and-15 is a cross polarization curve of the 5G millimeter wave differential feed dielectric resonator antenna module in the present embodiment, and another curve is a cross polarization curve of microstrip feed in the prior art, which shows that the antenna module in the present embodiment has a performance gain improvement of about 5 db;
referring to fig. 6, it can be seen that the beam is normal and there is no deformity in the 3D directional diagram of the 5G millimeter wave differential feeding dielectric resonator antenna module in the embodiment at 28GNZ, that is, the antenna module in the embodiment can be normally used in an actual application scenario.
The embodiment of the utility model discloses an embodiment two is:
the difference between the 5G millimeter wave differential feed dielectric resonator antenna module and the first embodiment is as follows:
the PCB also comprises a radio frequency chip, a digital integrated circuit chip and a power supply chip;
the long feeder line also comprises an extension piece;
the radio frequency chip comprises a phase shifter, an amplifier and a matching network; the matching network is respectively connected with one end of the long feed line far away from the antenna basic unit and one end of the short feed line far away from the antenna basic unit, the amplifier is connected with the matching network, and the phase shifter is connected with the amplifier;
the digital integrated circuit chip is connected with the radio frequency chip;
the power chip is respectively connected with the extension sheet, the radio frequency chip and the digital integrated circuit chip;
in an optional embodiment, the digital integrated circuit chip is an FPGA (Field Programmable Gate Array) or a single chip;
the utility model discloses an antenna is differential antenna, through differential signal, and differential signal need just can transmit in specific transmission line like the short circuit coupling line in this application, and interfering signal is difficult to pass through, and single-ended signal all can transmit in arbitrary transmission line, but its transmission line also passes through interfering signal easily.
In summary, the utility model provides a 5G millimeter wave differential feed dielectric resonator antenna module, which comprises a PCB board and an antenna basic unit, wherein the PCB board is provided with a short circuit coupling line as a differential feed structure, the antenna basic unit is detachably connected with the short circuit coupling line, the short circuit coupling line comprises a long feeder line and a short feeder line, the orientation of the ends of the long feeder line and the short feeder line which are not connected with the antenna basic unit is different by 180 degrees, the basic unit of the antenna is a ceramic body, the short circuit coupling line generates a differential signal through the input of a signal, and the detachable connection between the PCB and the antenna basic unit provides a flexible test space for the antenna structure, the antenna basic unit combined with the ceramic body further reduces the cost of the antenna structure, set up the shielding post on the PCB board, can provide stronger anti-interference, guarantee the quality of received signal.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A5G millimeter wave differential feed dielectric resonator antenna module is characterized by comprising an antenna basic unit and a PCB;
the PCB is provided with a short circuit coupling line; the short circuit coupling line comprises a long feeder line and a short feeder line;
a first side face of the antenna base unit is connected to one end of the long feed line, and a second side face of the antenna base unit, which is opposite to the first side face, is connected to one end of the short feed line;
the other end of the long feeder line faces towards the other end of the short feeder line by 180 degrees, and a gap is arranged between the other end of the long feeder line and the other end of the short feeder line.
2. The 5G millimeter wave differential feed dielectric resonator antenna module according to claim 1, characterized in that a plurality of short-circuit coupling lines are arranged on the PCB, and each short-circuit coupling line is connected with an antenna basic unit.
3. The 5G millimeter wave differential feed dielectric resonator antenna module as claimed in claim 1, wherein the antenna base unit is a ceramic body.
4. The 5G millimeter wave differential feed dielectric resonator antenna module as claimed in claim 1, wherein the connection between the antenna base unit and the long feed line and the short feed line is detachable.
5. The 5G millimeter wave differential feed dielectric resonator antenna module as claimed in claim 1, wherein the long feed line further comprises an extension piece, and the extension piece is connected to the PCB.
6. The 5G millimeter wave differential feed dielectric resonator antenna module according to claim 5, characterized in that the PCB board further comprises a radio frequency chip, and the radio frequency chip is connected with the short circuit coupling line.
7. The 5G millimeter wave differential feed dielectric resonator antenna module of claim 6, wherein the radio frequency chip comprises a phase shifter, an amplifier, a matching network;
the matching network is respectively connected with one end of the long feed line far away from the antenna basic unit and one end of the short feed line far away from the antenna basic unit, the amplifier is connected with the matching network, and the phase shifter is connected with the amplifier.
8. The 5G millimeter wave differential feed dielectric resonator antenna module of claim 6, characterized in that the PCB board further comprises a digital integrated circuit chip, and the digital integrated circuit chip is connected with the radio frequency chip.
9. The 5G millimeter wave differential feed dielectric resonator antenna module of claim 8, characterized in that the PCB board further comprises a power chip, and the power chip is respectively connected with the extension piece, the radio frequency chip and the digital integrated circuit chip.
10. The 5G millimeter wave differential feed dielectric resonator antenna module of claim 1, characterized in that the PCB board further comprises a shielding post.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022737884.2U CN214254745U (en) | 2020-11-24 | 2020-11-24 | 5G millimeter wave differential feed dielectric resonator antenna module |
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| CN202022737884.2U CN214254745U (en) | 2020-11-24 | 2020-11-24 | 5G millimeter wave differential feed dielectric resonator antenna module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542698A (en) * | 2020-11-24 | 2021-03-23 | 深圳市信维通信股份有限公司 | 5G millimeter wave differential feed dielectric resonator antenna module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542698A (en) * | 2020-11-24 | 2021-03-23 | 深圳市信维通信股份有限公司 | 5G millimeter wave differential feed dielectric resonator antenna module |
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