CN113823907A - Broadband antenna applied to 5G millimeter waves - Google Patents
Broadband antenna applied to 5G millimeter waves Download PDFInfo
- Publication number
- CN113823907A CN113823907A CN202111253891.8A CN202111253891A CN113823907A CN 113823907 A CN113823907 A CN 113823907A CN 202111253891 A CN202111253891 A CN 202111253891A CN 113823907 A CN113823907 A CN 113823907A
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- antenna
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- millimeter waves
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- 239000000758 substrate Substances 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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- Details Of Aerials (AREA)
- Aerials With Secondary Devices (AREA)
- Inorganic Insulating Materials (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The invention provides a broadband antenna applied to 5G millimeter waves, which comprises a substrate, a first antenna, a second antenna, an impedance matching line segment and a ground layer. The substrate comprises a first surface and a second surface. The first antenna comprises two first frequency band units which are respectively arranged on the first surface and the second surface. The second antenna comprises two second frequency band units which are respectively arranged on the first surface and the second surface. The impedance matching line segment is electrically connected with one of the first frequency band units arranged on the first surface. The grounding layer is electrically connected with the other first channel unit arranged on the second surface. When the first antenna works, the second antenna is taken as a guider; when the second antenna is operating, the first antenna acts as a reflector. Thereby, a bandwidth completely covering the NR (newradio) band of 5G millimeter waves is provided.
Description
Technical Field
The invention relates to a broadband antenna, in particular to a broadband antenna applied to 5G millimeter waves.
Background
In order to achieve higher transmission rates, New air interfaces (New Radio; NR; New air interface) are developed in 5G communication systems, and one Frequency Range of the New air interface NR is FR2(Frequency Range2), a low Frequency Range of the Frequency Range FR2 is 24.25GHz to 29.5GHz, a high Frequency Range is 37GHz to 43.5GHz, and a Frequency Range FR2 includes Frequency bands in a millimeter wave (mmWave) Range.
At present, patch antennas are more adopted in 5G antennas, and have a simpler structure and higher directivity, and because the bandwidth of the patch antennas is narrower, a broadband effect needs to be realized by relying on a feed-in structure and a medium setting. However, the complexity of the feeding structure and the medium arrangement is high.
Therefore, the market is lack of a broadband antenna applied to 5G millimeter waves with low complexity, high directivity and small size, and therefore, the relevant practitioners are seeking solutions.
Disclosure of Invention
Therefore, an object of the present invention is to provide a broadband antenna applied to 5G millimeter waves, wherein a first band unit of a first antenna and a second band unit of a second antenna are disposed on both a first surface and a second surface of a substrate, covering a wide bandwidth range.
According to one embodiment of the present invention, a broadband antenna for 5G millimeter waves includes a substrate, a first antenna, a second antenna, an impedance matching line and a ground plane. The substrate comprises a first surface and a second surface. The second surface is opposite to the first surface. The first antenna comprises two first frequency band units. The two first frequency band units are respectively arranged on the first surface and the second surface. The second antenna has a space with the first antenna and comprises two second frequency band units. The two second frequency band units are respectively arranged on the first surface and the second surface. The impedance matching line segment is arranged on the first surface and is electrically connected with one of the first frequency band units arranged on the first surface. The grounding layer is arranged on the second surface and is electrically connected with the other first frequency band unit arranged on the second surface. When the first antenna works, the second antenna is regarded as a guider; when the second antenna is operated, the first antenna is regarded as a reflector.
Therefore, the broadband antenna applied to the 5G millimeter wave is provided with the first frequency band unit and the second frequency band unit on the first surface and the second surface of the substrate, and has the characteristics of small size, large broadband and high directivity.
Drawings
Fig. 1 is a perspective view of a broadband antenna applied to 5G millimeter waves according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a first surface of a broadband antenna applied to 5G millimeter waves according to the embodiment of fig. 1;
fig. 3 is a schematic diagram of a second surface of the broadband antenna applied to 5G millimeter waves according to the embodiment of fig. 1;
fig. 4 is a schematic diagram illustrating a measurement of a loop loss of a broadband antenna applied to 5G millimeter waves according to the embodiment of fig. 1;
fig. 5 shows a smith chart of a first antenna applied to a broadband antenna of 5G millimeter wave according to the embodiment of fig. 1;
fig. 6 shows a smith chart of a second antenna applied to a broadband antenna of 5G millimeter wave according to the embodiment of fig. 1;
fig. 7 is a schematic diagram illustrating the current distribution of the broadband antenna applied to 5G millimeter waves according to the embodiment of fig. 1 at an operating frequency of 28 GHz; and
fig. 8 shows a schematic current distribution diagram of a broadband antenna applied to 5G millimeter waves according to the embodiment of fig. 1 at an operating frequency of 39 GHz.
Description of reference numerals:
100: wide-band antenna
110: substrate
112: first surface
114: second surface
120: first antenna
122: first frequency band unit
124: a first feed-in point
130: second antenna
132: second frequency band unit
134: a second feed-in point
140: impedance matching line segment
150: grounding layer
a: first line segment
b: second line segment
c: third line segment
d: the fourth line segment
e: the fifth line segment
f: parallel frame line segment
f 1: long line segment
f 2: wide line segment
m1, m2, m 3: measuring point
L132,La,Lb,Ld,Le: length of
Detailed Description
Referring to fig. 1 to 3 together, fig. 1 is a perspective view illustrating a wideband antenna 100 applied to 5G millimeter waves according to an embodiment of the present invention; fig. 2 shows a schematic diagram of the first surface 112 of the broadband antenna 100 applied to 5G millimeter waves according to the embodiment of fig. 1; and fig. 3 shows a schematic diagram of the second surface 114 of the broadband antenna 100 applied to 5G millimeter waves according to the embodiment of fig. 1. The broadband antenna 100 applied to 5G millimeter waves includes a substrate 110, a first antenna 120, a second antenna 130, an impedance matching line segment 140, and a ground plane 150. The substrate 110 includes a first surface 112 and a second surface 114. The second surface 114 is opposite the first surface 112. The first antenna 120 includes two first band units 122. The two first band units 122 are respectively disposed on the first surface 112 and the second surface 114. The second antenna 130 is spaced apart from the first antenna 120, and includes two second band units 132. The two second band units 132 are disposed on the first surface 112 and the second surface 114, respectively. The impedance matching line segment 140 is disposed on the first surface 112 and electrically connected to one of the first band units 122 disposed on the first surface 112. The ground layer 150 is disposed on the second surface 114 and electrically connected to another first band unit 122 disposed on the second surface 114. When the first antenna 120 is operated, the second antenna 130 can be regarded as a Director (Director); when the second antenna 130 is operated, the first antenna 120 can be regarded as a Reflector (Reflector). Therefore, the broadband antenna 100 applied to 5G millimeter waves of the present invention has the characteristics of small size, large broadband, and high directivity by disposing the first band unit 122 and the second band unit 132 on both the first surface 112 and the second surface 114 of the substrate 110.
Specifically, when the first antenna 120 transmits a signal, the second antenna 130 can be regarded as a director of the first antenna 120, so as to increase the directivity of the first antenna 120 in the z-axis direction; when the second antenna 130 radiates, the first antenna 120 can be regarded as a reflector of the second antenna 130, so as to improve the gain. Therefore, in the broadband antenna 100 applied to 5G millimeter waves, the first antenna 120 and the second antenna 130 are disposed on the substrate 110, so that not only is the bandwidth of the first antenna 120 and the second antenna 130 increased, but also the directivity and the gain in the z-axis direction are improved.
As is apparent from fig. 1 to 3, the x-axis direction (paper discharge surface direction) in fig. 1 and 2 is opposite to the x-axis direction (paper entrance surface direction) in fig. 3. The two first band units 122 are symmetrically disposed on the first surface 112 and the second surface 114, respectively, and the two first band units 122 are partially opposite to each other. The two second band units 132 are symmetrically disposed on the first surface 112 and the second surface 114, respectively, and the two second band units 132 are partially opposite to each other. As shown in fig. 2, one of the first band units 122, one of the second band units 132, and the impedance matching line segment 140 are disposed on the first surface 112. The impedance matching line segment 140 may be a trapezoid, and the short side of the trapezoid parallel to the y-axis is connected to the first band unit 122; the opposite long sides of the trapezoid parallel to the y-axis connect the edges of the substrate 110. As shown in fig. 3, another first band unit 122, another second band unit 132 and a ground layer 150 are disposed on the second surface 114. The ground layer 150 extends from the edge of the substrate 110 to the first band unit 122 to form a rectangular line segment.
In detail, the first antenna 120 may further include a first feeding point 124, and the first feeding point 124 penetrates through the substrate 110 and connects the ground layer 150 and the impedance matching line segment 140. The first feeding point 124 penetrates through the substrate 110 along the x-axis direction from the middle line position of the opposite long sides of the impedance matching line segment 140 and is connected to the position of the second surface 114 relative to the first surface 112. The first band unit 122 disposed on the second surface 114 may further include a first line segment a, a second line segment b, a third line segment c, a fourth line segment d, a fifth line segment e, and a parallel frame line segment f. One end of the second segment b is connected with the first segment a. The third line segment c is parallel to the first line segment a and is connected with the other end of the second line segment b. The fourth line segment d is parallel to the third line segment c. The fifth line segment e vertically connects the third line segment c and the fourth line segment d, as shown in fig. 3. The parallel frame line segment f comprises two long line segments f1 and two wide line segments f2, wherein the two long line segments f1 are parallel to the second line segments b; the two wide segments f2 are parallel to the first segment a, the two long segments f1 and the two wide segments f2 are connected to form a parallelogram. The extending lines of the first line segment a, the second line segment b and the fourth line segment d are intersected to form a space, and the parallel frame line segment f is positioned in the space.
Further, the length L of the first line segment aaIs less than the length L of one of the second band units 132132. Wherein a second band unit 132 has a length L132Is less than the length L of the second line segment bb. The length L of the second line segment bbIs less than the length L of the fifth line segment ee. Length L of fifth line segment eeIs less than the length L of the fourth line segment dd. Specifically, the substrate 110 may have a size of 10mm × 8 mm; length L132May be 1.2 mm; length LaMay be 1.12 mm; length LbMay be 1.62 mm; length LdMay be 2 mm; length LeMay be 1.7mm, but the present invention is not limited thereto.
The second antenna 130 may be a planar dipole antenna. The second antenna 130 may further include a second feeding point 134, wherein the second feeding point 134 penetrates through the substrate 110 and is connected to the second band unit 132. The second feeding point 134 penetrates the substrate 110 along the x-axis direction and connects two portions of the second band unit 132 opposite to each other.
Referring to fig. 1 to 4, fig. 4 is a schematic diagram illustrating a measurement of a loop loss of the wideband antenna 100 applied to 5G millimeter waves according to the embodiment of fig. 1. The frequency of the first antenna 120 is 28 GHz. The frequency of the second antenna 130 is 39 GHz. The frequency application range of the first antenna 120 is 23.8GHz or more and 30.64GHz or less. The frequency application range of the second antenna 130 is greater than or equal to 35.94GHz and less than or equal to 45 GHz. The second antenna 130 is farther from the ground plane 150 than the first antenna 120. Specifically, the first antenna 120 may be a 28GHz antenna; the second antenna 130 may be a 39GHz antenna, and the loop loss of the first antenna 120 and the second antenna 130 may be as shown in fig. 4. The measurement points m1 and m2 represent the frequency at which the loop loss of the first antenna 120 is-10 dB; the measurement point m3 represents the frequency at which the loop loss of the second antenna 130 is-10 dB. As shown in FIG. 4, the loop loss of the first antenna 120 is less than-10 dB at frequencies from 23.8GHz to 30.64 GHz. The loop loss of the second antenna 130 is less than-10 dB at the frequency of 35.94 GHz-45 GHz. Therefore, the broadband antenna 100 applied to 5G millimeter waves of the present invention utilizes the dipole antenna structure (i.e., the first line segment a, the second line segment b, the third line segment c, the fourth line segment d, and the fifth line segment e of the first frequency band unit 122) of the first antenna 120 to couple to the parallel frame line segment f to generate low frequency resonance, and the dipole antenna structure (i.e., the second frequency band unit 132) of the second antenna 130 to generate high frequency resonance, so as to achieve broadband and high directivity effects, covering the full frequency bands of 28GHz and 39GHz of 5G millimeter waves, and further being used for the frequency bands n257, n258, n259, n260, and n261 of the frequency range FR2 of the NR frequency band.
Referring to fig. 1 to 6, fig. 5 is a smith chart of the first antenna 120 of the broadband antenna 100 for 5G millimeter waves according to the embodiment of fig. 1; and fig. 6 shows a smith chart of the second antenna 130 applied to the broadband antenna 100 of 5G millimeter wave according to the embodiment of fig. 1. The circular curves in fig. 5 and 6 are ranges in which the Voltage Standing Wave Ratio (VSWR) is 2 or less (i.e., the VSWR is less than or equal to 2). As can be seen from fig. 5, the VSWR at the measurement points m1 and m2 is less than or equal to 2; as can be seen from fig. 6, the voltage standing wave ratio VSWR at the measurement point m3 is 2 or less.
Referring to fig. 1, fig. 7 and fig. 8, fig. 7 is a schematic diagram illustrating a current distribution of the wideband antenna 100 applied to 5G millimeter waves according to the embodiment of fig. 1 when the operating frequency is 28 GHz; and fig. 8 shows a schematic current distribution diagram of the broadband antenna 100 applied to 5G millimeter waves according to the embodiment of fig. 1 at an operating frequency of 39 GHz. As shown in fig. 7, when the operating frequency of the broadband antenna 100 applied to 5G millimeter waves is 28GHz, the current is distributed at the first feeding point 124, the impedance matching line segment 140, the first antenna 120, and the second feeding point 134. As shown in fig. 8, when the operating frequency of the broadband antenna 100 applied to 5G mm waves is 39GHz, the current is distributed at the second feeding point 134, the second antenna 130 and the first feeding point 124.
As can be seen from the above embodiments, the present invention has the following advantages: first, the broadband antenna applied to 5G millimeter waves of the present invention has the characteristics of small size, large broadband and high directivity by disposing the first band unit and the second band unit on the first surface and the second surface of the substrate; secondly, the first antenna and the second antenna are arranged on the substrate simultaneously when the broadband antenna applied to the 5G millimeter waves, so that the frequency bandwidth of the first antenna and the second antenna is increased, and the directivity and the gain in the z-axis direction are improved; third, the broadband antenna applied to the 5G millimeter wave of the present invention utilizes the dipole antenna structure of the first antenna (i.e., the first line segment, the second line segment, the third line segment, the fourth line segment, and the fifth line segment of the first band unit) to couple to the parallel frame line segments to generate low frequency resonance, and the dipole antenna structure of the second antenna (i.e., the second band unit) generates high frequency resonance, so as to achieve broadband effect, cover the full frequency bands of 28GHz and 39GHz of the 5G millimeter wave, and further be used for the frequency bands n257, n258, n259, n260, and n261 of the frequency range FR2 of the NR frequency band.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A broadband antenna applied to 5G millimeter waves is characterized by comprising:
a substrate, comprising:
a first surface; and
a second surface opposite the first surface;
a first antenna, comprising:
two first frequency band units respectively arranged on the first surface and the second surface;
a second antenna spaced apart from the first antenna and comprising:
two second frequency band units respectively arranged on the first surface and the second surface;
an impedance matching line segment disposed on the first surface and electrically connected to one of the first frequency band units disposed on the first surface; and
a grounding layer disposed on the second surface and electrically connected to the other first band unit disposed on the second surface;
when the first antenna works, the second antenna is regarded as a guider; when the second antenna is working, the first antenna is regarded as a reflector.
2. The broadband antenna for 5G mm waves of claim 1, wherein the first band unit further comprises:
a first line segment;
one end of the second line segment is connected with the first line segment;
a third line segment parallel to the first line segment and connected to the other end of the second line segment;
a fourth line segment parallel to the third line segment;
a fifth line segment vertically connecting the third line segment and the fourth line segment; and
a parallel frame line segment, which comprises two long line segments and two wide line segments, wherein the two long line segments are parallel to the second line segment, the two wide line segments are parallel to the first line segment, and the two long line segments and the two wide line segments are connected to form a parallelogram;
the extending lines of the first line segment, the second line segment and the fourth line segment intersect to form a space, and the parallel frame line segment is located in the space.
3. The broadband antenna applied to 5G millimeter waves according to claim 2,
the length of the first line segment is less than that of one of the second frequency band units;
wherein the length of a second band unit is smaller than that of the second line segment;
the length of the second line segment is less than that of the fifth line segment; and
the length of the fifth line segment is smaller than that of the fourth line segment.
4. The broadband antenna for 5G mm waves of claim 1, wherein the second antenna is a planar dipole antenna.
5. The broadband antenna applied to 5G millimeter waves according to claim 1,
the first antenna further comprises:
a first feed-in point penetrating the substrate and connecting the ground layer and the impedance matching line segment; and
the second antenna further comprises:
a second feeding point penetrating the substrate and connected to the second band units.
6. The broadband antenna applied to 5G millimeter waves according to claim 1,
the two first frequency band units are respectively and symmetrically arranged on the first surface and the second surface; and
the two second frequency band units are respectively and symmetrically arranged on the first surface and the second surface.
7. The broadband antenna for 5G millimeter waves according to claim 1, wherein the two first band element portions are opposite to each other, and the two second band element portions are opposite to each other.
8. The broadband antenna for 5G mm waves of claim 1, wherein the second antenna is further away from the ground plane than the first antenna.
9. The broadband antenna for 5G mm waves according to claim 1, wherein the frequency of the first antenna is 28GHz, and the frequency of the second antenna is 39 GHz.
10. The broadband antenna applied to 5G millimeter waves of claim 9,
the frequency application range of the first antenna is more than or equal to 23.8GHz and less than or equal to 30.64 GHz; and
the frequency application range of the second antenna is greater than or equal to 35.94GHz and less than or equal to 45 GHz.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253891.8A CN113823907A (en) | 2021-10-27 | 2021-10-27 | Broadband antenna applied to 5G millimeter waves |
| TW110145542A TWI774622B (en) | 2021-10-27 | 2021-12-06 | Wide bandwidth antenna for 5g millimeter wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253891.8A CN113823907A (en) | 2021-10-27 | 2021-10-27 | Broadband antenna applied to 5G millimeter waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113823907A true CN113823907A (en) | 2021-12-21 |
Family
ID=78917458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111253891.8A Pending CN113823907A (en) | 2021-10-27 | 2021-10-27 | Broadband antenna applied to 5G millimeter waves |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113823907A (en) |
| TW (1) | TWI774622B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001076012A1 (en) * | 2000-03-31 | 2001-10-11 | Navcom Technology, Inc. | Nested turnstile antenna |
| CN108232422A (en) * | 2017-12-29 | 2018-06-29 | 维沃移动通信有限公司 | A kind of antenna and mobile radio terminal |
| CN108288757A (en) * | 2017-12-29 | 2018-07-17 | 维沃移动通信有限公司 | A kind of mobile radio terminal and antenna |
| CN213692328U (en) * | 2020-11-03 | 2021-07-13 | 深圳光启尖端技术有限责任公司 | Microstrip antenna |
| CN216055168U (en) * | 2021-10-27 | 2022-03-15 | 环旭(深圳)电子科创有限公司 | Broadband antenna applied to 5G millimeter waves |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208717B (en) * | 2010-03-31 | 2014-03-12 | 宏达国际电子股份有限公司 | Planar dual-direction radiating antenna |
| TWI682587B (en) * | 2018-12-19 | 2020-01-11 | 國立交通大學 | Miniature high-gain field-type reconfigurable antenna |
| CN113451768B (en) * | 2021-08-30 | 2021-11-26 | 广东健博通科技股份有限公司 | 5G ultra-wideband antenna unit and 5G ultra-wideband dual-polarized antenna |
-
2021
- 2021-10-27 CN CN202111253891.8A patent/CN113823907A/en active Pending
- 2021-12-06 TW TW110145542A patent/TWI774622B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001076012A1 (en) * | 2000-03-31 | 2001-10-11 | Navcom Technology, Inc. | Nested turnstile antenna |
| CN108232422A (en) * | 2017-12-29 | 2018-06-29 | 维沃移动通信有限公司 | A kind of antenna and mobile radio terminal |
| CN108288757A (en) * | 2017-12-29 | 2018-07-17 | 维沃移动通信有限公司 | A kind of mobile radio terminal and antenna |
| CN213692328U (en) * | 2020-11-03 | 2021-07-13 | 深圳光启尖端技术有限责任公司 | Microstrip antenna |
| CN216055168U (en) * | 2021-10-27 | 2022-03-15 | 环旭(深圳)电子科创有限公司 | Broadband antenna applied to 5G millimeter waves |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202318722A (en) | 2023-05-01 |
| TWI774622B (en) | 2022-08-11 |
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