CN215896695U - Millimeter wave dielectric resonator antenna module and communication equipment - Google Patents
Millimeter wave dielectric resonator antenna module and communication equipment Download PDFInfo
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- CN215896695U CN215896695U CN202121465901.XU CN202121465901U CN215896695U CN 215896695 U CN215896695 U CN 215896695U CN 202121465901 U CN202121465901 U CN 202121465901U CN 215896695 U CN215896695 U CN 215896695U
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Abstract
The utility model discloses a millimeter wave dielectric resonator antenna module and communication equipment, which comprise a dielectric substrate and a dielectric resonator; the dielectric resonator is arranged on one side of the dielectric substrate; the dielectric resonator is shaped like a hemisphere; the hemispherical cambered surface of the dielectric resonator is in contact with the dielectric substrate, and the shape of the dielectric resonator is set to be a hemisphere, so that various dielectric resonator antenna modes can be excited, namely a plurality of HEMMnmp modes can be excited simultaneously, and the resonances generated by the modes are generally adjacent, so that a broadband can be formed, the antenna module can cover n257, n258, n260, n261 and n259 frequency bands, and finally an ultra-wideband antenna is formed, and the frequency band coverage rate of the antenna module is improved.
Description
Technical Field
The utility model relates to the technical field of antennas, in particular to a millimeter wave dielectric resonator antenna module and communication equipment.
Background
5G (5th-Generation, fifth Generation mobile communication technology) is a research and development focus in the global industry, and 5G standards have become common in the industry by developing 5G technology. 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, high-reliability and 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 millimeter wave has the characteristics of high carrier frequency and large bandwidth, and is a main means for realizing 5G ultrahigh data transmission rate. According to the technical specification of 3GPP TS 38.101-25G terminal radio frequency and the report of TR38.817 terminal radio frequency, it is known that a 5G millimeter microwave antenna needs to cover N257(26.5-29.5GHz), N258(24.25-27.25GHz), N260(37-40GHz) and N261(27.5-28.35GHz) frequency bands and N259(39-43.5GHz) frequency bands planned in the future, so that designing a broadband antenna is a requirement of a 5G millimeter wave module.
However, in a conventional millimeter wave broadband antenna based on a PCB, whether the antenna is in the form of a patch antenna (patch antenna), a dipole antenna (dipole antenna) or a slot antenna (slot antenna), the thickness of the PCB increases as the bandwidth to be covered increases, which results in an increase in the volume of the antenna module. For the antenna PCB applied to millimeter wave bands, along with the increase of the number of layers of the PCB, the precision requirements of the multilayer PCB on the hole alignment, the line width and the line distance are correspondingly improved, the processing difficulty is increased, and the millimeter wave antenna module is difficult to cover a plurality of frequency bands.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a millimeter wave dielectric resonator antenna module and communication equipment, improves the frequency channel coverage of antenna module.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a millimeter wave dielectric resonator antenna module comprises a dielectric substrate and a dielectric resonator;
the dielectric resonator is arranged on one side of the dielectric substrate;
the dielectric resonator is shaped like a hemisphere;
and the semi-sphere cambered surface of the dielectric resonator is in contact with the dielectric substrate.
Further, the dielectric resonator includes a plurality;
the centers of the plurality of dielectric resonators are arranged on one side of the dielectric substrate at equal intervals in a straight line.
Further, a strip line is also included;
the cambered surface of the hemisphere is provided with a feed structure;
the strip line is arranged on the other side of the dielectric substrate;
one end of the strip line is connected with the feed structure, and the other end of the strip line is used for being connected with a radio frequency chip.
Further, the feed structure comprises a feed probe and a metal post;
one end of the feed probe is embedded into the dielectric resonator, and the other end of the feed probe is connected with one end of the metal column;
the other end of the metal column penetrates through the dielectric substrate and is connected with the strip line.
Further, an antenna ground is also included;
the antenna ground is located in the dielectric substrate.
Further, the chip interconnection line is also included;
the chip interconnection line is located on the side of the dielectric substrate and used for connecting the radio frequency chip with other chips.
Further, the dielectric resonator is of a ceramic body structure;
the ceramic body structure has a dielectric constant of 5-10.
The utility model has the beneficial effects that: because the dielectric resonator antenna has the HEMMnmp mode (n, m and p are positive integers), the resonance distance generated by the mode excited by the antenna formed by the dielectric resonator module with the conventional shape is far, a broadband cannot be formed, a plurality of dielectric resonator antenna modes can be excited by setting the shape of the dielectric resonator as a hemisphere, namely, a plurality of HEMMnmp modes can be simultaneously excited, and the resonances generated by the modes are generally adjacent and can form the broadband, so that the antenna module can cover the frequency bands of n257, n258, n260, n261 and n259, and finally an ultra-wideband antenna is formed, and the frequency band coverage rate of the antenna module is improved.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a millimeter wave dielectric resonator antenna module according to an embodiment of the present invention;
fig. 2 is a bottom view of the overall structure of an antenna module of a millimeter wave dielectric resonator according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of an antenna module of a millimeter wave dielectric resonator according to an embodiment of the present invention;
fig. 4 is a bottom view of an internal structure of an antenna module of a millimeter wave dielectric resonator according to an embodiment of the present invention;
fig. 5 is a diagram illustrating S parameter results of an antenna module of a millimeter wave dielectric resonator according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a real part and an imaginary part of a single impedance of a dielectric resonator of the millimeter wave dielectric resonator antenna module according to the embodiment of the present invention;
FIG. 7 shows an embodiment of the present invention of a millimeter wave dielectric resonator antenna module in HEM010The cross section distribution diagram of the YOX surface of the magnetic force line under the mode;
FIG. 8 shows an embodiment of the present invention of a millimeter wave dielectric resonator antenna module in HEM010The ZOX plane cross-sectional profile of the magnetic field lines in the mode;
FIG. 9 shows a millimeter wave dielectric according to an embodiment of the present inventionMass resonator antenna module in HEM011The cross section distribution diagram of the YOX surface of the magnetic force line under the mode;
FIG. 10 shows an embodiment of the present invention of a millimeter wave dielectric resonator antenna module in HEM011The ZOX plane cross-sectional profile of the magnetic field lines in the mode;
FIG. 11 shows an embodiment of the present invention of a millimeter wave dielectric resonator antenna module in HEM111The ZOX plane cross-sectional profile of the magnetic field lines in the mode;
FIG. 12 shows an embodiment of the present invention of a millimeter wave dielectric resonator antenna module in HEM111The cross section distribution diagram of the YOX surface of the magnetic force line under the mode;
FIG. 13 shows an embodiment of the present invention of a millimeter wave dielectric resonator antenna module in HEM111The ZOX plane cross-sectional profile of the magnetic field lines in the mode;
description of reference numerals:
1. a dielectric substrate; 2. a dielectric resonator; 3. a strip line; 4. a feed structure; 41. a feed probe; 42. a metal post; 5. an antenna ground; 6. a chip interconnection line; 7. a first BGA solder ball; 8. and a second BGA solder ball.
Detailed Description
In order to explain technical contents, achieved objects, and 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, a millimeter wave dielectric resonator antenna module includes a dielectric substrate and a dielectric resonator;
the dielectric resonator is arranged on one side of the dielectric substrate;
the dielectric resonator is shaped like a hemisphere;
and the semi-sphere cambered surface of the dielectric resonator is in contact with the dielectric substrate.
From the above description, the beneficial effects of the present invention are: because the dielectric resonator antenna has the HEMMnmp mode (n, m and p are positive integers), the resonance distance generated by the mode excited by the antenna formed by the dielectric resonator module with the conventional shape is far, a broadband cannot be formed, a plurality of dielectric resonator antenna modes can be excited by setting the shape of the dielectric resonator as a hemisphere, namely, a plurality of HEMMnmp modes can be simultaneously excited, and the resonances generated by the modes are generally adjacent and can form the broadband, so that the antenna module can cover the frequency bands of n257, n258, n260, n261 and n259, and finally an ultra-wideband antenna is formed, and the frequency band coverage rate of the antenna module is improved.
Further, the dielectric resonator includes a plurality;
the centers of the plurality of dielectric resonators are arranged on one side of the dielectric substrate at equal intervals in a straight line.
As can be seen from the above description, the gain of the antenna can be increased to the maximum extent and the radiation intensity of the antenna module can be increased while the small size is satisfied by providing a plurality of dielectric resonators.
Further, a strip line is also included;
the cambered surface of the hemisphere is provided with a feed structure;
the strip line is arranged on the other side of the dielectric substrate;
one end of the strip line is connected with the feed structure, and the other end of the strip line is used for being connected with a radio frequency chip.
According to the description, the strip line plays a role in impedance matching and signal transmission, one end of the strip line is connected with the feed structure, the other end of the strip line is connected with the radio frequency chip, the radio frequency chip can transmit the control signal to the strip line, and the control signal is transmitted to the antenna through the strip line, so that the antenna module works more stably.
Further, the feed structure comprises a feed probe and a metal post;
one end of the feed probe is embedded into the dielectric resonator, and the other end of the feed probe is connected with one end of the metal column;
the other end of the metal column penetrates through the dielectric substrate and is connected with the strip line.
As can be seen from the above description, when the antenna module is fed by using the probe feeding method, the feeding position can be changed to control the input impedance, so that matching is easy.
Further, an antenna ground is also included;
the antenna ground is located in the dielectric substrate.
As can be seen from the above description, the antenna is capable of changing the direction of the electromagnetic wave, thereby improving the gain of the antenna.
Further, the chip interconnection line is also included;
the chip interconnection line is located on the side of the dielectric substrate and used for connecting the radio frequency chip with other chips.
It can be known from the above description that the radio frequency chip is connected with other chips through the chip interconnection line, so that the antenna module can be connected with more chips, and the performance of the antenna in all aspects is improved.
Further, the dielectric resonator is of a ceramic body structure;
the ceramic body structure has a dielectric constant of 5-10.
As can be seen from the above description, the antenna using the ceramic body having a dielectric constant of 5 to 10 as the dielectric resonator enables the size of the dielectric required for the antenna to be small under the condition that the dielectric resonator can cover the frequency bands of n257, n258, n260, n261, and n259, thereby achieving miniaturization of the antenna module.
Another embodiment of the present invention provides a communication device, including the above millimeter wave dielectric resonator antenna module.
The antenna module can be applied to devices of a 5G millimeter wave communication system, such as handheld mobile devices, and the following description is made by way of specific embodiments:
example one
Referring to fig. 1-4, an antenna module of a millimeter wave dielectric resonator according to the present embodiment includes a dielectric substrate 1 and a dielectric resonator 2;
the dielectric resonator 2 is arranged on one side of the dielectric substrate 1;
the dielectric resonator 2 is shaped like a hemisphere;
the semi-sphere cambered surface of the dielectric resonator 2 is in contact with the dielectric substrate 1;
as shown in fig. 2 and 3, further comprises a strip line 3;
the cambered surface of the hemisphere is provided with a feed structure 4;
the strip line 3 is arranged on the other side of the dielectric substrate 1;
one end of the strip line 3 is connected with the feed structure 4, and the other end of the strip line 3 is used for being connected with a radio frequency chip;
the feeding structure 4 comprises a feeding probe 41 and a metal post 42;
one end of the feed probe 41 is embedded in the dielectric resonator 2, and the other end of the feed probe 41 is connected with one end of the metal column 42;
the other end of the metal column 42 penetrates through the dielectric substrate 1 and is connected with the strip line 3;
specifically, one end of the feed probe 41 is embedded in the dielectric resonator 2 toward the center of the sphere of the dielectric resonator 2;
in an alternative embodiment, the hole depth of the dielectric resonator 2 is 1 mm, the hole radius is 1 mm, and the length and radius of the feed probe 41 correspond to the hole depth and the hole radius of the dielectric resonator 2 by 1 mm;
as shown in fig. 3, fig. 3 is a schematic structural diagram after the dielectric substrate 1 is hidden, and further includes an antenna ground 5;
the antenna ground 5 is positioned in the dielectric substrate 1;
as shown in fig. 3, a chip interconnection line 6;
the chip interconnection line 6 is located on the one side of the dielectric substrate 1 and used for connecting the radio frequency chip with other chips;
as shown in fig. 4, further comprises a first BGA solder ball 7 and a second BGA solder ball 8;
one end of the first BGA solder ball 7 is connected with the strip line 3, and the other end of the first BGA solder ball is used for being connected with a radio frequency chip;
one end of the second BGA solder ball 8 is connected with the chip interconnection line 6, and the other end of the second BGA solder ball is used for being connected with a radio frequency chip and other chips;
specifically, the above structures are all integrated on a PCB, and the integrated structure is connected with an external radio frequency chip through the first BGA solder ball 7; the antenna module also comprises a chip part which comprises a control chip, a radio frequency chip and a power chip, wherein the control chip controls the radio frequency chip, the power chip provides power for the radio frequency chip, and the radio frequency chip provides signals for the antenna; the radio frequency chip comprises a phase shifter and an amplifier, wherein the phase shifter is used for providing phase difference between units to realize the capability of beam scanning, and the amplifier is used for compensating the loss of the phase shifter.
Example two
Referring to fig. 1 and 5-13, the difference between the first embodiment and the second embodiment is that the specific structure of the dielectric resonator module is defined as follows:
as shown in fig. 1, the dielectric resonator 2 includes a plurality;
the centers of the plurality of dielectric resonators 2 are arranged on one side of the dielectric substrate 1 at equal intervals in a straight line;
in an alternative embodiment, the number of the dielectric resonators 2 is 4, and the radius of the dielectric resonator 2 is 2.1 mm;
the dielectric resonator 2 is of a ceramic body structure;
the dielectric constant of the ceramic body structure is 5-10;
in an alternative embodiment, simulation is performed based on an antenna model with a dielectric constant of 9.2, and an S parameter diagram of the antenna module shown in fig. 5 is obtained, and it can be seen that five frequency bands of N257(26.5-29.5GHz), N258(24.25-27.25GHz), N260(37-40GHz), N261(27.5-28.35GHz) and N259(39-43.5GHz) are covered below-10 db;
fig. 6 is a schematic diagram of the real part and the imaginary part of the single impedance of the dielectric resonator of the millimeter wave dielectric resonator antenna module according to the embodiment of the present invention, in which there are distinct peak values at 26GHz, 34GHz, and 40GHz, which illustrate that the peak values are resonance points of 3 modes, i.e., HEM010Mode, HEM011Mode and HEM111Mode, 3 resonances are formed by 3 modes, the resonances are adjacentThen forming a broadband;
FIGS. 7 and 8 show an example of the millimeter wave dielectric resonator antenna module in the HEM according to the embodiment of the present invention010The cross section distribution of the magnetic force lines in the mode has the resonant frequency of 26 GHz;
FIGS. 9 and 10 show an example of a millimeter wave dielectric resonator antenna module in an HEM according to an embodiment of the present invention011The cross section distribution of the magnetic force lines in the mode has the resonant frequency of 34 GHz;
FIGS. 11-13 show an example of a millimeter wave dielectric resonator antenna module in an HEM according to an embodiment of the present invention111The resonance frequency of the cross-section distribution of the magnetic force lines in the mode is 40 GHz.
EXAMPLE III
A communication device, comprising the millimeter wave dielectric resonator antenna module according to the first embodiment or the second embodiment.
In summary, the millimeter wave dielectric resonator antenna module and the communication device provided by the utility model include a dielectric substrate and a dielectric resonator, the dielectric resonator is disposed on one side of the dielectric substrate, the dielectric resonator is shaped like a hemisphere, a hemispherical arc surface of the dielectric resonator contacts with the dielectric substrate, the dielectric resonator includes a plurality of dielectric resonators, centers of the plurality of dielectric resonators are linearly and equidistantly arranged on the one side of the dielectric substrate, the dielectric resonator is a ceramic body structure, a dielectric constant of the ceramic body structure is 5-10, the above structures are integrated on a PCB board, which is more convenient for integration with a chip, the plurality of dielectric resonators can maximally improve a gain of an antenna and radiation intensity of the antenna module while satisfying a small size, and the shape of the dielectric resonator is set as a hemisphere, the antenna module can excite multiple dielectric resonator antenna modes, namely multiple HEMMnmp modes can be excited simultaneously, the resonances generated by the modes are generally adjacent, and a broadband can be formed, so that the antenna module can cover n257, n258, n260, n261 and n259 frequency bands, and finally an ultra-wideband antenna is formed, and the frequency band coverage rate of the antenna module is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A millimeter wave dielectric resonator antenna module is characterized by comprising a dielectric substrate and a dielectric resonator;
the dielectric resonator is arranged on one side of the dielectric substrate;
the dielectric resonator is shaped like a hemisphere;
and the semi-sphere cambered surface of the dielectric resonator is in contact with the dielectric substrate.
2. The millimeter wave dielectric resonator antenna module according to claim 1, wherein the dielectric resonator comprises a plurality of dielectric resonators;
the centers of the plurality of dielectric resonators are arranged on one side of the dielectric substrate at equal intervals in a straight line.
3. The millimeter wave dielectric resonator antenna module of claim 1, further comprising a strip line;
the cambered surface of the hemisphere is provided with a feed structure;
the strip line is arranged on the other side of the dielectric substrate;
one end of the strip line is connected with the feed structure, and the other end of the strip line is used for being connected with a radio frequency chip.
4. The millimeter wave dielectric resonator antenna module according to claim 3, wherein the feed structure comprises a feed probe and a metal post;
one end of the feed probe is embedded into the dielectric resonator, and the other end of the feed probe is connected with one end of the metal column;
the other end of the metal column penetrates through the dielectric substrate and is connected with the strip line.
5. The millimeter wave dielectric resonator antenna module according to claim 1, further comprising an antenna ground;
the antenna ground is located in the dielectric substrate.
6. The millimeter wave dielectric resonator antenna module of claim 1, further comprising a chip interconnection line;
the chip interconnection line is located on the side of the dielectric substrate and used for connecting the radio frequency chip with other chips.
7. The millimeter wave dielectric resonator antenna module according to claim 1, wherein the dielectric resonator is of a ceramic body structure;
the ceramic body structure has a dielectric constant of 5-10.
8. A communication device comprising a millimeter wave dielectric resonator antenna module according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121465901.XU CN215896695U (en) | 2021-06-29 | 2021-06-29 | Millimeter wave dielectric resonator antenna module and communication equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121465901.XU CN215896695U (en) | 2021-06-29 | 2021-06-29 | Millimeter wave dielectric resonator antenna module and communication equipment |
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| CN215896695U true CN215896695U (en) | 2022-02-22 |
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| CN202121465901.XU Active CN215896695U (en) | 2021-06-29 | 2021-06-29 | Millimeter wave dielectric resonator antenna module and communication equipment |
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