CN109509975B - Flexible 5G multi-frequency antenna based on liquid crystal polymer - Google Patents
Flexible 5G multi-frequency antenna based on liquid crystal polymer Download PDFInfo
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- CN109509975B CN109509975B CN201811576866.1A CN201811576866A CN109509975B CN 109509975 B CN109509975 B CN 109509975B CN 201811576866 A CN201811576866 A CN 201811576866A CN 109509975 B CN109509975 B CN 109509975B
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- antenna
- coplanar waveguide
- radiation patch
- liquid crystal
- waveguide feed
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- 229920000106 Liquid crystal polymer Polymers 0.000 title claims abstract description 22
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 title claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- 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
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention relates to a flexible 5G multi-frequency antenna based on a liquid crystal polymer, which comprises a substrate and an antenna, wherein the substrate is made of the liquid crystal polymer material, the antenna comprises a main radiation patch and a coplanar waveguide feed part, the main body of the main radiation patch and the main body of the coplanar waveguide feed part are arranged in a 'delta' shape, the coplanar waveguide feed part is positioned at the left lower part and the right lower part of the main radiation patch, the main radiation patch belt is composed of two parts, one part is L-shaped, the main body of the main radiation patch extends from left to top, and the other part is a rectangular radiation patch and is positioned at the center part of the whole antenna. The lower right coplanar waveguide feed section has an L-shaped stub extending from the upper left to the lower right from the coplanar waveguide feed section body. Compared with the prior art, the invention has the advantages of flexible material, simple structure, good anti-interference performance and the like.
Description
Technical Field
The invention relates to a multi-frequency antenna, in particular to a flexible 5G multi-frequency antenna based on liquid crystal polymer.
Background
With the rapid development of modern wireless technology, a fifth generation mobile communication technology (5G) has been developed that can greatly improve the system capacity, spectrum and energy efficiency. Wireless connection puts higher and higher requirements on the multiband antenna, and meanwhile, the modern communication equipment has higher and more demanding requirements on miniaturization, so that the design of the miniaturized multiband antenna becomes a new development trend at present. Planar printed antennas have received great attention in academia and industry due to their lower cost, lighter weight and better performance.
However, the 2G, 3G, and 4G systems are not replaced immediately, but several communication systems coexist for a relatively long period of time, which brings new requirements to the design of wireless communication systems, and it is necessary to support multiple frequency bands simultaneously. The simplest solution is to use a plurality of different transceiver antennas to meet the requirement of multiple systems. However, this solution is neither compatible with the system nor layout of the antenna, and the manufacturing costs are relatively high. The best solution at present is to design a multisystem common antenna, i.e. to use a pair of multiband antennas to serve the multisystem simultaneously. The design scheme has the advantages of effectively reducing the number of antennas, reducing the production cost and reducing the interference of an antenna system. In the case of multi-system coexistence, a multi-band antenna needs to be designed to meet the requirements.
As wearable technology has matured, various wearable products have grown into the lives of average people on a large scale. The wearable device is used for intelligently configuring daily wearing of people by using a wearable technology, and is implanted into daily wearing of glasses, watches, bracelets, clothes, footwear and the like of people by using various technologies such as sensing, identification, connection, cloud service and the like. The wearable device is widely applied in the fields of sports health, entertainment and leisure, medical assistance and the like. More wearable devices, both attached and implanted, are continually being developed, which benefit from the development of miniaturized wearable antenna technology. One of the main challenges of wearable electronics is to implement a flexible, ubiquitous, rugged, and low cost wearable antenna while exhibiting rf performance similar to that of rigid copper.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a flexible 5G multi-frequency antenna based on liquid crystal polymer.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides a flexible 5G multifrequency antenna based on liquid crystal polymer, includes base plate and antenna, the base plate be liquid crystal polymer material, the antenna include main radiation paster and coplanar waveguide feed part, main body and the main body of coplanar waveguide feed part of main radiation paster be "article" font and arrange, coplanar waveguide feed part is located main radiation paster lower left side and lower right side, main radiation paster has two dendrites, one of them is L shape, extends from left side upwards by main radiation paster's main body, another is the rectangle radiation paster, is located the central part of whole antenna.
The base plate is rectangular, and the outer contour of the antenna is flush with the edge of the base plate.
The substrate size is 32mm by 20mm.
The lower right coplanar waveguide feed section has an L-shaped stub extending from the upper left from the main body of the coplanar waveguide feed section.
The characteristic impedance of the coplanar waveguide is 50Ω.
The working frequency bands of the multi-frequency antenna are 2.32-2.54GHz, 3.22-3.95GHz and 4.64-8.08GHz.
Compared with the prior art, the invention has the following advantages:
(1) The ultrathin liquid crystal polymer LCP is used as a substrate, and the Liquid Crystal Polymer (LCP) is used as a novel flexible substrate material, so that the flexible substrate material has excellent application prospect. LCP has many excellent properties, including low coefficient of thermal expansion, low cost, low loss, and the like, and the dielectric constant of LCP is sufficiently stable over a broad enough frequency range that LCP is the best choice in low cost, high performance, small-sized device designs. In particular, in the wearable field, a Liquid Crystal Polymer (LCP) material, which is a flexible material, has excellent flexibility, can be bent at will, and is coated on the surface of a carrier, thus having excellent and development prospects.
(2) The antenna is directly composed of a main radiation patch and a coplanar waveguide feed part, and is fed by adopting a coplanar waveguide with characteristic impedance of 50 omega. By adding the branches on the patch and the coplanar waveguide ground plate, the antenna achieves three-band operation, and the antenna can operate at 2.32-2.54GHz,3.22-3.95GHz and 4.64-8.08GHz. Covering both WLAN and WIMAX frequency bands. The overall dimension of the antenna is 32mm.20mm, and compared with other multi-frequency antennas, the antenna has a simple structure, and is convenient to design and manufacture in a miniaturized manner.
(3) The coplanar waveguide structure is used, the process is simple, the cost is low, and all the grounding wires are arranged on the upper surface. In a grounded coplanar waveguide, a small spacing between the top ground conductor and the signal conductor can achieve low impedance of the circuit, and by adjusting the spacing, the impedance of the circuit can be changed. The radiation interference to nearby circuits is small in signal transmission, and the anti-interference performance is good.
Drawings
Fig. 1 is a schematic structural diagram of a multi-frequency antenna according to the present embodiment;
Fig. 2 is a diagram of S11 simulation results of the multi-band antenna according to the present embodiment.
Reference numerals:
1 is a main radiation patch; and 2 is a coplanar waveguide feed portion.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Examples
As shown in fig. 1, a flexible 5G multi-frequency antenna based on a liquid crystal polymer, which comprises a substrate and an antenna, wherein the substrate is made of the liquid crystal polymer material, the antenna comprises a main radiation patch 1 and a coplanar waveguide feeding part 2, the main body of the main radiation patch 1 and the main body of the coplanar waveguide feeding part 2 are arranged in a 'delta' shape, the coplanar waveguide feeding part 2 is positioned at the left lower part and the right lower part of the main radiation patch, the main radiation patch is provided with two branches, one branch is in an L shape, the main body of the main radiation patch extends from the left to the upper part, and the other branch is a rectangular radiation patch and is positioned at the central part of the whole antenna. The lower right coplanar waveguide ground patch has an L-shaped stub extending from the upper left from the body of the coplanar waveguide ground patch. The substrate is a rectangle of 32mm x 20mm, and the outline of the antenna is parallel and level with the edge of the substrate.
The coplanar waveguide has a characteristic impedance of 50Ω.
The operating frequency bands of the multi-frequency antenna are 2.32-2.54GHz, 3.22-3.95GHz and 4.64-8.08GHz.
FIG. 2 is a simulation result of the return loss (S11) parameter of the antenna, the abscissa is frequency, the ordinate is the return loss (S11) dB value, and the frequency band of S11 minus-10 dB is the working frequency band.
Claims (2)
1. The flexible 5G multi-frequency antenna based on the liquid crystal polymer comprises a substrate and an antenna, and is characterized in that the substrate is made of the liquid crystal polymer material, the antenna comprises a main radiation patch and a coplanar waveguide feed part, the main body of the main radiation patch and the main body of the coplanar waveguide feed part are arranged in a 'delta' shape, the coplanar waveguide feed part is positioned at the left lower part and the right lower part of the main radiation patch, the main radiation patch is provided with two branches, one branch is L-shaped, the main body of the main radiation patch extends from the left to the top, and the other branch is a rectangular radiation patch and is positioned at the central part of the whole antenna;
The substrate is rectangular, and the outer contour of the antenna is level with the edge of the substrate;
the coplanar waveguide feed part at the lower right is provided with an L-shaped branch, and the main body of the coplanar waveguide feed part extends leftwards from top;
The characteristic impedance of the coplanar waveguide is 50Ω;
The working frequency bands of the multi-frequency antenna are 2.32-2.54GHz, 3.22-3.95GHz and 4.64-8.08GHz.
2. A flexible 5G multi-frequency antenna based on liquid crystal polymer according to claim 1, wherein the substrate size is 32mm x 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576866.1A CN109509975B (en) | 2018-12-23 | 2018-12-23 | Flexible 5G multi-frequency antenna based on liquid crystal polymer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576866.1A CN109509975B (en) | 2018-12-23 | 2018-12-23 | Flexible 5G multi-frequency antenna based on liquid crystal polymer |
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| Publication Number | Publication Date |
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| CN109509975A CN109509975A (en) | 2019-03-22 |
| CN109509975B true CN109509975B (en) | 2024-08-27 |
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| CN201811576866.1A Active CN109509975B (en) | 2018-12-23 | 2018-12-23 | Flexible 5G multi-frequency antenna based on liquid crystal polymer |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11258184B2 (en) | 2019-08-21 | 2022-02-22 | Ticona Llc | Antenna system including a polymer composition having a low dissipation factor |
| US11637365B2 (en) | 2019-08-21 | 2023-04-25 | Ticona Llc | Polymer composition for use in an antenna system |
| US12142820B2 (en) | 2019-09-10 | 2024-11-12 | Ticona Llc | 5G system containing a polymer composition |
| US11912817B2 (en) | 2019-09-10 | 2024-02-27 | Ticona Llc | Polymer composition for laser direct structuring |
| US11555113B2 (en) | 2019-09-10 | 2023-01-17 | Ticona Llc | Liquid crystalline polymer composition |
| US12209164B2 (en) | 2019-09-10 | 2025-01-28 | Ticona Llc | Polymer composition and film for use in 5G applications |
| CN110739545B (en) * | 2019-09-17 | 2020-11-03 | 杭州电子科技大学 | Dual-band electrically small antenna with high efficiency and high gain |
| US11917753B2 (en) | 2019-09-23 | 2024-02-27 | Ticona Llc | Circuit board for use at 5G frequencies |
| US11646760B2 (en) | 2019-09-23 | 2023-05-09 | Ticona Llc | RF filter for use at 5G frequencies |
| US11721888B2 (en) | 2019-11-11 | 2023-08-08 | Ticona Llc | Antenna cover including a polymer composition having a low dielectric constant and dissipation factor |
| KR20220145385A (en) | 2020-02-26 | 2022-10-28 | 티코나 엘엘씨 | circuit structure |
| CN111293432A (en) * | 2020-03-19 | 2020-06-16 | 上海电力大学 | Tri-frequency binary MIMO antenna capable of being used for WLAN/WiMAX/5G |
| US11728559B2 (en) | 2021-02-18 | 2023-08-15 | Ticona Llc | Polymer composition for use in an antenna system |
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