CN109088159B - Multifrequency liquid crystal packaging antenna - Google Patents
Multifrequency liquid crystal packaging antenna Download PDFInfo
- Publication number
- CN109088159B CN109088159B CN201810816127.9A CN201810816127A CN109088159B CN 109088159 B CN109088159 B CN 109088159B CN 201810816127 A CN201810816127 A CN 201810816127A CN 109088159 B CN109088159 B CN 109088159B
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- Prior art keywords
- arm
- transmitting
- main body
- transmitting arm
- extending
- Prior art date
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- 239000004973 liquid crystal related substance Substances 0.000 title description 4
- 238000004806 packaging method and process Methods 0.000 title description 4
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000005684 electric field Effects 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
Landscapes
- Waveguide Aerials (AREA)
Abstract
A multi-frequency antenna comprises an antenna grounding surface, a dielectric substrate, a supporting body, a feed transmission line and a metal patch with a special structure. The metal paster is attached to the support body, its characterized in that: the metal patch comprises a main body, a feed end, a first transmitting arm, a second transmitting arm and a third transmitting arm; the first transmitting arm, the second transmitting arm and the third transmitting arm are formed by extending and bending the main body and share a feed end. The supporting body is made of an electric control anisotropic material; the antenna ground plane is fixed on the lower surface of the dielectric substrate. When the multi-frequency antenna works, the first transmitting arm, the second transmitting arm and the third transmitting arm can generate three resonant frequencies according to radio frequency signals fed by the feed end, so that the first transmitting arm, the second transmitting arm and the third transmitting arm generate different operating frequencies, and a frequency reconstruction phenomenon can be generated under the condition that electric field values of anisotropic materials are different.
Description
Technical Field
The present invention relates to an antenna, and more particularly, to a multi-frequency liquid crystal antenna suitable for multiple operating frequencies.
Background
With the development of wireless communication technology and the progress of technology, wireless communication devices such as mobile phones, personal digital assistants (Personal Digital Assistant, PDA) and the like are rapidly emerging, which greatly facilitates people's lives. And the antenna is one of the most important components in a wireless communication device as a means for transmitting and receiving radio waves.
In order to meet the requirements of the existing various wireless communication networks, most wireless communication devices currently use multi-frequency antennas. The multi-frequency antenna can generate a plurality of working frequencies when in operation, thereby enhancing the universality of the wireless communication terminal. However, the conventional multiband antenna often has an insufficient bandwidth, and is not easy to meet the requirements of communication systems with different frequency bands.
Disclosure of Invention
The present invention is directed to a multi-band antenna, which solves the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a multi-frequency antenna comprises an antenna grounding surface, a dielectric substrate, a supporting body, a feed transmission line and a metal patch with a special structure. The metal patch is attached to the support body, and is characterized in that: the metal patch comprises a main body, a feed end, a first transmitting arm, a second transmitting arm and a third transmitting arm; the first transmitting arm, the second transmitting arm and the third transmitting arm are formed by extending and bending the main body and share the feed end. The support body is made of an electric control anisotropic material; the antenna grounding surface is fixed on the lower surface of the dielectric substrate. When the multi-frequency antenna works, the first transmitting arm, the second transmitting arm and the third transmitting arm can generate three resonant frequencies according to radio frequency signals fed by the feed end, so that the first transmitting arm, the second transmitting arm and the third transmitting arm generate different operating frequencies, and a frequency reconstruction phenomenon can be generated under the condition that electric field values of anisotropic materials are different. .
Compared with the prior art, the invention has the beneficial effects that:
the multi-frequency packaging antenna can be effectively packaged and integrated with a system on a chip to form the packaging antenna, has a very compact structure, has more stable system performance and lower equipment development cost; the universality is strong; simple implementation, low production cost, convenient integration with wireless communication equipment, contribution to miniaturization of wireless communication devices and wide application range.
Drawings
Fig. 1 is a front view of a three-dimensional structure of an embodiment of a multi-frequency antenna.
Fig. 2 is a side view of an embodiment of a multi-frequency antenna.
Fig. 3 is an impedance characteristic diagram of the multi-band antenna according to the multi-band antenna embodiment.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Referring to fig. 1 and 2, the multi-frequency antenna includes a dielectric substrate 1, a ground plane 11, a support 12, a feeding end 22, and a metal patch 2 with a special structure. The support 12 is mounted on the upper surface of the dielectric substrate 1, and the ground plane 11 is mounted on the lower surface of the dielectric substrate 1. The support body 12 is a semi-cylindrical body, and the height of the support body is the same as the width of the dielectric substrate 1. The metal patch 2 is attached to the support 12, and includes a main body 21, a feeding end 22, a first transmitting arm 23, a second transmitting arm 24, and a third transmitting arm 25. In this embodiment, the dielectric substrate 1 is a rectangular dielectric plate, and the length of the rectangular dielectric plate is about 153mm. The width is about 60mm, the thickness is about 1mm, and the dielectric substrate 1 is made of FR4 epoxy having a relative dielectric constant of 4.4. The ground plane 11 is rectangular and sheet-shaped, the length of the ground plane 11 is about 135mm, the width of the ground plane is about 60mm, and one side of the ground plane 11 coincides with the lower surface of the dielectric substrate far away from the supporting body. The support 12 is made of liquid crystal and has a radius of about 9mm. The feeding terminal 22 is disposed at a side end position of the main body 21 and connected to the port 13, for feeding and transmitting the radio frequency signal. The port 13 is connected to the ground plane 11 through the dielectric substrate 1.
The main body 21 is in a shape of a rectangular sheet with a curved arc, and has a projection length of about 11.13mm and a projection width of about 7.5mm, and is connected to the feeding terminal 22 at a corner position. The first radiating arm 23 is formed in a substantially arcuate rectangular sheet shape extending from the main body 21 at a corner position adjacent to the feeding end 22. The second transmitting arm 24 is in the shape of an arcuately curved rectangular sheet, which is formed by extending from the main body 21 at the corner position of the same side as the first transmitting arm 23 and opposite to the other end. The projection length of the second transmitting arm 24 is longer than the projection length of the first transmitting arm 23, and the projection width of the second transmitting arm 24 is the same as the projection length of the first transmitting arm 23. The third transmitting arm 25 is formed by connecting an arc-shaped bent U-shape and an inverted F-shape band, and is formed by extending and bending about one third of the main body 21 opposite to the feeding end 22, and the opening end thereof is disposed toward the main body 21. The U-shaped portion of the third transmitting arm 25 includes a first arm 251, a second arm 252 and a third arm 253, where the first arm 251 is formed by extending from about one third of the main body 21 opposite to the feeding end 22 toward a direction away from the feeding end 22; the second arm 252 is formed by extending and bending the tail end of the first arm 251 towards the second transmitting arm 24 along the direction perpendicular to the first arm 251; the third arm 253 is formed by extending and bending the end of the second arm 252 toward the main body 21, so as to form a U-shaped portion of the third arm 25 having an open end toward the main body 21. The projection length (projection width) of the first arm 251 is the same as the projection length (projection width) of the third arm 253, and the projection width of the first arm 251 is smaller than the projection width of the second arm 252. The inverted-F portion of the third transmitting arm 25 includes a fourth arm portion 254, a fifth arm portion 255 and a sixth arm portion 256, and the fourth arm portion 254 is formed by extending the distal end of the third arm portion 253 of the U-shaped portion toward the feeding end 22; the fifth arm portion 255 is formed by extending and bending a middle portion of the fourth arm portion 254 toward the main body 21, and the sixth arm portion 256 is formed by extending and bending a distal end of the fourth arm portion 254 toward the main body 21, thereby forming an inverted F-shaped portion having an open end toward the third firing arm 25 of the main body 21. The projection width of the fourth arm 254 is smaller than the projection width of the third arm 253. The fifth arm 255 has a projection width greater than that of the sixth arm 256, and the fifth arm 255 has a projection length greater than that of the sixth arm 256.
Referring to fig. 3, a schematic diagram of an impedance characteristic curve of the multi-frequency antenna simulated in the three-dimensional electromagnetic simulation software is shown. The multi-frequency antenna has two frequency bands between 0 and 3GHZ, namely 2240MHz to 2330MHz and 2790MHz to 2872MHz respectively, and the return loss reaches-24.2 dB at the 2300MHz resonance point.
The multi-frequency antenna is simple in structure and easy to realize; the universality is strong; simple implementation, low production cost, convenient integration with wireless communication equipment, contribution to miniaturization of the wireless communication device and wide application range.
While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (9)
1. A multi-frequency antenna, characterized in that: the multi-frequency antenna consists of an antenna grounding surface, a dielectric substrate, a supporting body, a feed transmission line and a metal patch with a special structure; the metal patch comprises a main body, a feed end, a first transmitting arm, a second transmitting arm and a third transmitting arm; the first transmitting arm, the second transmitting arm and the third transmitting arm are formed by extending and bending the main body and share the feed end; the support body is a semicircle column and is fixed on the upper surface of the medium substrate, and the support body is an electric control anisotropic material; the antenna grounding surface is fixed on the lower surface of the dielectric substrate; when the multi-frequency antenna works, the first transmitting arm, the second transmitting arm and the third transmitting arm can generate three resonant frequencies according to radio frequency signals fed by the feed end, so that the first transmitting arm, the second transmitting arm and the third transmitting arm generate different operating frequencies, and frequency reconstruction phenomenon can be generated under the condition that electric field values of anisotropic materials are different, and the multi-frequency antenna has multi-frequency operating characteristics.
2. The multi-frequency antenna of claim 1, wherein: the main body is in an arc-shaped bent rectangular sheet shape, and one corner position of the main body is connected with the feed end and positioned on the same horizontal plane for feeding and transmitting radio frequency signals; the first transmitting arm is in a rectangular sheet shape bent in an arc shape and is formed by extending at a corner position adjacent to the feeding end on the main body.
3. The multi-frequency antenna of claim 1, wherein: the second transmitting arm is in an arc-shaped bent rectangular lamellar shape and is formed by extending from the corner position of the main body, which is on the same side as the first transmitting arm and opposite to the other end.
4. The multi-frequency antenna of claim 1, wherein: the third transmitting arm is formed by connecting an arc-shaped bent U-shaped belt and an inverted F-shaped belt, is formed by extending and bending about one third of the position, opposite to the feed end, of the main body, and the opening end of the third transmitting arm is arranged towards the main body.
5. The multi-frequency antenna of claim 4, wherein: the third transmitting arm U-shaped part comprises a first arm part, a second arm part and a third arm part, wherein the first arm part is formed by extending a part, which is opposite to the feeding end, of the main body in a direction away from the feeding end; the second arm part is formed by extending and bending the tail end of the first arm part towards the second transmitting arm along the direction perpendicular to the first arm part, and the third arm part is formed by extending and bending the tail end of the second arm part towards the main body, so that a third transmitting arm U-shaped part with an opening end towards the main body is formed.
6. The multi-frequency antenna of claim 5, wherein: the third transmitting arm inverted-F-shaped part comprises a fourth arm part, a fifth arm part and a sixth arm part, wherein the fourth arm part is formed by extending the tail end of the third arm part of the U-shaped part towards the feed end; the fifth arm is formed by extending and bending a middle part of the fourth arm towards the direction of the main body, and the sixth arm is formed by extending and bending a tail end of the fourth arm towards the direction of the main body, so that an inverted F-shaped part of the third transmitting arm with an opening end towards the main body is formed.
7. The multi-frequency antenna of claim 5, wherein: the width of the first arm is the same as the width of the third arm, and the width of the first arm is smaller than the width of the second arm.
8. The multi-frequency antenna of claim 6, wherein: the third arm portion is smaller than the width of the fourth arm portion.
9. The multi-frequency antenna of claim 6, wherein: the sixth arm portion is smaller than the width of the fifth arm portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810816127.9A CN109088159B (en) | 2018-07-24 | 2018-07-24 | Multifrequency liquid crystal packaging antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810816127.9A CN109088159B (en) | 2018-07-24 | 2018-07-24 | Multifrequency liquid crystal packaging antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109088159A CN109088159A (en) | 2018-12-25 |
| CN109088159B true CN109088159B (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810816127.9A Active CN109088159B (en) | 2018-07-24 | 2018-07-24 | Multifrequency liquid crystal packaging antenna |
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| CN (1) | CN109088159B (en) |
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| Publication number | Publication date |
|---|---|
| CN109088159A (en) | 2018-12-25 |
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Effective date of registration: 20231012 Address after: No.185, Yinjiang Road, Jimei, Xiamen, Fujian Province, 361000 Applicant after: JIMEI University Address before: No. 47 Huizhangbei Lane, Xiamen City, Fujian Province, 361004 Applicant before: Chen Peng |
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