CN217881919U - High-gain and low-profile millimeter wave antenna module and electronic equipment - Google Patents
High-gain and low-profile millimeter wave antenna module and electronic equipment Download PDFInfo
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- CN217881919U CN217881919U CN202221086440.XU CN202221086440U CN217881919U CN 217881919 U CN217881919 U CN 217881919U CN 202221086440 U CN202221086440 U CN 202221086440U CN 217881919 U CN217881919 U CN 217881919U
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Abstract
The utility model discloses a millimeter wave antenna module and electronic equipment of high-gain and low section, including at least one antenna element, antenna element stacks gradually first antenna ground, first dielectric layer, second antenna ground and second dielectric layer, the second antenna is equipped with the gap on the ground, be equipped with a plurality of first metallization holes in the first dielectric layer, a plurality of first metallization hole intercommunication first antenna ground and second antenna ground, and center on the gap sets up. The utility model discloses can improve antenna gain, and have the advantage of low section.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a millimeter wave antenna module and electronic equipment of high-gain and low section.
Background
5G has been a common general knowledge in the industry as the research and development focus in the world, developing 5G technology to establish the 5G standard. 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 100Mbps. The unique high carrier frequency and large bandwidth characteristics of millimeter waves are the main means for realizing 5G ultrahigh data transmission rate. Meanwhile, the space reserved for the 5G antenna in the future mobile phone is small, and the number of selectable positions is small, so that a miniaturized antenna module needs to be designed.
The EIRP (equivalent omnidirectional radiation power) of the radio frequency link is the sum of the antenna gain and the output gain of the chip, and the high-gain millimeter wave antenna can reduce the output power of the chip under the condition that the EIRP meets the 3GPP standard, so that the heat dissipation of the chip is good; and on the other hand, the high-gain millimeter wave antenna does not need to be designed into dual polarization, and the antenna gain is high, so that the design complexity is simplified.
Therefore, how to increase the antenna gain and reduce the size of the antenna becomes a technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that: a high-gain and low-profile millimeter wave antenna module and an electronic device are provided, which can improve the antenna gain and have the advantage of low profile.
In order to solve the technical problem, the utility model discloses a technical scheme be: a high-gain and low-profile millimeter wave antenna module comprises at least one antenna unit, wherein the antenna unit comprises a first antenna ground, a first dielectric layer, a second antenna ground and a second dielectric layer which are sequentially stacked, a gap is formed in the second antenna ground, a plurality of first metalized holes are formed in the first dielectric layer, and the first metalized holes are communicated with the first antenna ground and the second antenna ground and are arranged around the gap.
The feed line is arranged on one surface of the second medium layer far away from the second antenna, and one end of the feed line is coupled with the gap.
Further, a projection of one end of the feed line on the second antenna ground perpendicularly intersects the slot.
The antenna further comprises a radio frequency chip, the radio frequency chip is arranged on one surface of the second medium layer far away from the second antenna, and the other end of the feeder line is connected with the radio frequency chip.
Furthermore, a second metallization hole is formed in the second dielectric layer, and one end of the feeder line is connected with the second metallization hole.
Further, the gap is in a long strip shape, and the length of the gap is
λ is the wavelength length and DK is the dielectric constant of the first dielectric layer.
Further, the shape that a plurality of first metallization hole circles is the rectangle.
Further, the total height of the first antenna ground, the first dielectric layer and the second antenna ground is 0.3mm.
Furthermore, the number of the antenna units is four, and the four antenna units are linearly arranged.
The utility model also provides an electronic equipment, include as above the millimeter wave antenna module of high-gain and low section.
The beneficial effects of the utility model reside in that: a slot is arranged on the second antenna ground, and a plurality of first metalized holes which are communicated with the first antenna ground and the second antenna ground and surround the slot are arranged in the first dielectric layer, so that the first antenna ground, the second antenna ground and the first metalized holes can form a back cavity, and a back cavity type slot is formed; by forming the back cavity type slot, the antenna gain can be improved and the profile height can be reduced.
Drawings
Fig. 1 is a schematic top view of a millimeter wave antenna module according to a first embodiment of the present invention;
fig. 2 is a side (partial) schematic view of a millimeter wave antenna module according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of a millimeter wave antenna module according to a first embodiment of the present invention;
fig. 4 is a schematic diagram of S parameters of a millimeter wave antenna module according to an embodiment of the present invention,
fig. 5 is a directional diagram of a millimeter wave antenna module according to a first embodiment of the present invention.
Description of the reference symbols:
100. an antenna unit;
1. a first antenna ground; 2. a first dielectric layer; 3. a second antenna ground; 4. a second dielectric layer; 5. a feed line; 6. a radio frequency chip; 7. BGA solder balls;
21. a first metalized hole; 31. a gap; 41. a second metalized hole.
Detailed Description
In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.
Referring to fig. 1-2, a high-gain and low-profile millimeter wave antenna module includes at least one antenna unit, where the antenna unit includes a first antenna ground, a first dielectric layer, a second antenna ground, and a second dielectric layer, which are sequentially stacked, a gap is disposed on the second antenna ground, a plurality of first metalized holes are disposed in the first dielectric layer, and the plurality of first metalized holes communicate with the first antenna ground and the second antenna ground and are disposed around the gap.
From the above description, the beneficial effects of the utility model reside in that: the antenna gain can be improved, and the antenna has the advantage of low profile.
The feed line is arranged on one surface of the second dielectric layer, which is far away from the second antenna ground, and one end of the feed line is coupled with the gap.
As can be seen from the above description, the feed line is coupled to the back cavity slot and the feed line is located above the slot radiation.
Further, a projection of one end of the feed line onto the second antenna ground perpendicularly intersects the slot.
The antenna further comprises a radio frequency chip, the radio frequency chip is arranged on one surface of the second medium layer far away from the second antenna, and the other end of the feeder line is connected with the radio frequency chip.
As can be seen from the above description, the rf chip is used to provide signals to the antenna.
Furthermore, a second metalized hole is formed in the second dielectric layer, and one end of the feeder line is connected with the second metalized hole.
As can be seen from the above description, by providing the second metallized hole, impedance matching of the antenna can be achieved.
Furthermore, the gap is in a long strip shape, and the length of the gap is
λ is the wavelength length and DK is the dielectric constant of the first dielectric layer.
Further, the shape that a plurality of first metallization hole is enclosed is rectangle.
Further, the total height of the first antenna ground, the first dielectric layer and the second antenna ground is 0.3mm.
From the above description, the profile height of the cavity is low, so that the overall size of the antenna module can be reduced.
Furthermore, the number of the antenna units is four, and the four antenna units are linearly arranged.
The utility model discloses still provide an electronic equipment, include as above the millimeter wave antenna module of high-gain and low section.
Example one
Referring to fig. 1-5, a first embodiment of the present invention is: a high-gain and low-profile millimeter wave antenna module can be used for 5G millimeter wave terminals or small base stations.
As shown in fig. 1, at least one antenna unit 100 is included, and in this embodiment, four antenna units 100 are taken as an example for description, and the four antenna units 100 are linearly arranged.
Referring to fig. 1 and 2, the antenna unit 100 includes a first antenna ground 1, a first dielectric layer 2, a second antenna ground 3, and a second dielectric layer 4, which are sequentially stacked, a slot 31 is formed on the second antenna ground 3, a plurality of first metalized holes 21 are formed in the first dielectric layer 2, and the plurality of first metalized holes 21 are communicated with the first antenna ground 1 and the second antenna ground 3 and are disposed around the slot 31, so as to form a back cavity type slot.
In this embodiment, the shape formed by surrounding the plurality of first metallized holes is rectangular, that is, the back cavity formed by the two layers of antennas and the first metallized holes is rectangular. Meanwhile, the first metalized holes can also be used as isolation walls among the antenna units to shield interference among the antenna units and reduce coupling among the antenna units. In this embodiment, the gap is in the shape of a strip and has a length of
Wherein, λ is the wavelength length corresponding to the working frequency band of the antenna module, and DK is the dielectric constant of the first dielectric layer.
The antenna unit 100 further includes a feed line 5, the feed line 5 is disposed on a side of the second dielectric layer 4 away from the second antenna ground 3, one end of the feed line 5 is coupled to the slot 31, and specifically, a projection of one end of the feed line 5 on the second antenna ground 3 perpendicularly intersects the slot 31. In this embodiment, the feeder 5 is a microstrip line.
Further, a second metalized hole 41 is provided in the second dielectric layer 4, and one end of the feed line 5 (i.e., the end coupled to the slot) is connected to the second metalized hole 41. By providing the second metallized hole, impedance matching of the antenna can be achieved.
Further, the antenna module further comprises a radio frequency chip 6, the radio frequency chip 6 is arranged on one surface of the second medium layer 4 far away from the second antenna ground 3, and the other end of the feeder line 5 is connected with the radio frequency chip 6.
Furthermore, a BGA solder ball 7 is also arranged on one surface of the second dielectric layer 4 far away from the second antenna ground 3, and the BGA solder ball 7 is connected with the radio frequency chip 6 through a connecting wire. The radio frequency chip can be connected with the digital chip, the analog chip and the low-frequency analog circuit through the BGA solder balls.
The radio frequency chip is used for providing signals for the antenna; the radio frequency chip comprises elements such as a phase shifter and an amplifier, wherein the phase shifter is used for providing phase difference among the antenna units to realize the beam scanning capability, and the amplifier is used for compensating the loss of the phase shifter. The digital chip is used for controlling a phase shifter and an amplifier of the radio frequency chip to achieve the function of antenna electric scanning. The analog chip is typically a power chip and is typically used to provide all of the circuit power.
Fig. 3 is a schematic diagram of the antenna module of this embodiment, where the left side of fig. 3 is a conventional slot antenna structure and a microstrip coupling slot, which implement bidirectional radiation, and the right side of fig. 3 is a cavity-backed slot antenna structure of this embodiment, where a microstrip feed line is coupled to the cavity-backed slot, and the microstrip feed line is above the slot radiation, which implement unidirectional radiation, thereby implementing high gain. In addition, in the present embodiment, the thickness of the cross section of the back cavity is as low as only 0.3mm, so that the overall cross section of the antenna module of the present embodiment can be as low as only 0.4mm, which has the advantage of low cross section.
Fig. 4 is a schematic diagram of S parameters of the antenna module according to this embodiment, and it can be seen from the diagram that the millimeter wave antenna module according to this embodiment can cover n261 (27.35-28.5 GHz) frequency band.
Fig. 5 is a directional diagram of the antenna module of the present embodiment, and it can be seen from the diagram that the directional diagram is normal and has no malformation, and has a scanning capability, and the gain is as high as 14.8dBi, whereas the antenna gain of the ordinary four-element antenna (antenna types such as patch, dipole, slot, etc.) is 9-10dBi, so the gain of the antenna module of the present embodiment is higher than that of the ordinary antenna module by 4.8dBi or more.
The embodiment can be composed of two layers of PCB boards, is easy to process and produce and reduces the cost; the antenna module of the embodiment can cover the n261 frequency band of 5G, and has the advantages of high gain and low profile.
In summary, the present invention provides a high-gain and low-profile millimeter wave antenna module and electronic device, by disposing a gap on the ground of the second antenna and disposing a plurality of first metallized holes in the first dielectric layer, which are connected to the ground of the first antenna and the ground of the second antenna and surround the gap, the first antenna ground, the ground of the second antenna and the first metallized holes can form a back cavity, thereby forming a back cavity type gap, and further improving the antenna gain; the PCB part of the antenna module can be composed of two layers of PCB boards, so that the antenna module is easy to process and produce, and the cost is reduced; the profile height of the antenna module is low, and the overall size of the antenna module can be reduced.
The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and 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. The millimeter wave antenna module is characterized by comprising at least one antenna unit, wherein the antenna unit comprises a first antenna ground, a first dielectric layer, a second antenna ground and a second dielectric layer which are sequentially stacked, a gap is formed in the second antenna ground, a plurality of first metalized holes are formed in the first dielectric layer, and the first metalized holes are communicated with the first antenna ground and the second antenna ground and are arranged around the gap.
2. The high-gain low-profile millimeter wave antenna module according to claim 1, further comprising a feed line, wherein the feed line is disposed on a surface of the second dielectric layer away from the ground of the second antenna, and one end of the feed line is coupled to the slot.
3. The high-gain, low-profile millimeter wave antenna module of claim 2, wherein a projection of one end of the feed line onto the second antenna ground perpendicularly intersects the slot.
4. The high-gain and low-profile millimeter wave antenna module according to claim 2, further comprising a radio frequency chip, wherein the radio frequency chip is disposed on a surface of the second dielectric layer away from the ground of the second antenna, and the other end of the feeder line is connected to the radio frequency chip.
5. The high-gain low-profile millimeter wave antenna module according to claim 2, wherein a second metalized hole is provided in the second dielectric layer, and one end of the feed line is connected to the second metalized hole.
6. The high-gain low-profile millimeter wave antenna module of claim 1, wherein the slot is elongated and has a length of
λ is the wavelength length and DK is the dielectric constant of the first dielectric layer.
7. The high-gain low-profile millimeter-wave antenna module of claim 1, wherein the first metallized holes surround a rectangular shape.
8. The high-gain low-profile millimeter wave antenna module according to claim 1, wherein a total height of the first antenna ground, the first dielectric layer, and the second antenna ground is 0.3mm.
9. The high-gain low-profile millimeter wave antenna module according to claim 1, wherein the number of the antenna elements is four, and the four antenna elements are linearly arranged.
10. An electronic device comprising the high-gain and low-profile millimeter wave antenna module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221086440.XU CN217881919U (en) | 2022-05-07 | 2022-05-07 | High-gain and low-profile millimeter wave antenna module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221086440.XU CN217881919U (en) | 2022-05-07 | 2022-05-07 | High-gain and low-profile millimeter wave antenna module and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217881919U true CN217881919U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221086440.XU Active CN217881919U (en) | 2022-05-07 | 2022-05-07 | High-gain and low-profile millimeter wave antenna module and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217881919U (en) |
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2022
- 2022-05-07 CN CN202221086440.XU patent/CN217881919U/en active Active
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