CN109742534A - A flexible multi-frequency antenna based on liquid crystal polymer substrate - Google Patents
A flexible multi-frequency antenna based on liquid crystal polymer substrate Download PDFInfo
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- CN109742534A CN109742534A CN201910122220.4A CN201910122220A CN109742534A CN 109742534 A CN109742534 A CN 109742534A CN 201910122220 A CN201910122220 A CN 201910122220A CN 109742534 A CN109742534 A CN 109742534A
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- 239000000758 substrate Substances 0.000 title claims abstract description 35
- 229920000106 Liquid crystal polymer Polymers 0.000 title claims abstract description 23
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000005855 radiation Effects 0.000 claims abstract description 5
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
本发明涉及一种基于液晶聚合物基片的柔性多频天线，包括基板、天线和接地板，所述的基板为柔性材料，所述的天线为位于基板正面的圆形辐射贴片，天线主体上设有两个U型槽，天线一侧带有馈电线，所述的接地板位于基板背面。与现有技术相比，本发明采用LCP材料，具有介质损耗低，吸湿性低，耐高温，耐化学腐蚀，热膨胀系数小、厚度小等优点；天线为圆形辐射贴片，采用改进的圆形接地板，通过在圆形贴片上增加两个U型槽，可以实现三频工作特性。
The invention relates to a flexible multi-frequency antenna based on a liquid crystal polymer substrate, comprising a substrate, an antenna and a grounding plate, the substrate is a flexible material, the antenna is a circular radiation patch located on the front of the substrate, and the antenna body There are two U-shaped grooves on it, one side of the antenna is provided with a feed line, and the ground plate is located on the back of the base plate. Compared with the prior art, the present invention adopts LCP material, which has the advantages of low dielectric loss, low hygroscopicity, high temperature resistance, chemical corrosion resistance, small thermal expansion coefficient, small thickness, etc. The three-band operating characteristics can be achieved by adding two U-shaped grooves to the circular patch.
Description
Technical field
The invention belongs to wirelessly communicate with flexible electronic communication equipment field, be related to a kind of wearable antenna, especially relate to
And a kind of flexible multifrequency antenna based on liquid crystal polymer substrate.
Background technique
With the rapid development of Modern wireless communication technology, there are a variety of work in the communication system of multiple frequency ranges, such as
The working frequency range of wireless lan communication system (WLAN) is 2.4/5.2/5.8GHz (2.4-2.484/5.15-5.35/5.725-
5.825GHz), the working frequency range of worldwide interoperability for microwave system (Wi-MAX) is 2.5/3.5/5.5GHz (2.5-2.69/3.4-
3.69/5.25-5.85GHz), the 5th Generation Mobile Communication System (5G) working frequency range is 3.3/4.8GHz (3.3-3.6/4.8-
5.0GHz).These are worked in the communication system of multiple frequency ranges, the past often uses several different antennas, this not only gives
The integrated and fusion of system brings very big difficulty, while also increasing the design cost of system.Therefore, multifrequency antenna is ground
Study carefully one of the research hotspot as wireless communication field.There are many method for realizing antenna multiband, including using multiple and different
Resonance minor matters introduce parasitic element structure etc. using gap loading technique.
It with the continuous development of science and technology and innovates, electronic equipment is to the direction for minimizing, being easily installed carrying
Development, utilizable space are more and more limited, it is necessary to which multifrequency antenna is more flexible, is easy to overlay on carrier surface, has therewith
Fitting well.And multifrequency flexible antennas combines flexible transmission circuit that the high-speed transfer of wireless signal may be implemented, and meets many
The application demand for needing flexible electronic devices can be applied with the development of wearable technology and implantable electronic technology in recent years
One of new hot spot is studied in the flexible antennas of wireless communication field.
Flexible multifrequency antenna that can be conformal not only can achieve beautiful mesh because it is easy to the structure conformal with carrier surface
, and while the saving device space, additional burden will not be carried out to equipment belt by overlaying on equipment surface.Therefore, miniaturization, energy
The flexible multifrequency antenna that enough and carrier is conformal, is easily integrated will be undoubtedly the mainstream studied.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind to be based on polymerizable mesogenic
The flexible multifrequency antenna of object substrate.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of flexible multifrequency antenna based on liquid crystal polymer substrate, including substrate, antenna and earth plate, the substrate
For flexible material, there are two U-type groove, days to set on the circular radiation patch of substrate front side, antenna body for the antenna
Line side has feed line, and the earth plate is located at substrate back.
The U-type groove is made of straightway.
Two U-type groove sizes are different, and the U-type groove close to feed line is smaller.
The feed line is the microstrip line of 50 Ω.
The earth plate is made of two 1/4 circles and the rectangular slab with rectangular channel, and the rectangular slab is located at two 1/4
Between circle, three's seamless connection.
The substrate is liquid crystal polymer LCP material.
The Antenna Operation frequency range is 2.09-2.78GHz, 3.20-4.60GHz and 5.06-6.56GHz.
Compared with prior art, the invention has the following advantages that
(1) with liquid crystal polymer (LCP) for medium substrate, for LCP as a kind of flexible material, flexibility is good, can be random
Bending, thickness is small, and has more stable dielectric constant in very broadband, has a good application prospect and practical value.
(2) structure is simple, by circular radiation patch and improved annular ground board group at using the microstrip line progress of 50 Ω
Feed.By increasing by two U-type grooves on circular patch, three frequency working characteristics are realized.The antenna can work in 2.09-
Tri- working frequency range of 2.78GHz, 3.20-4.60GHz and 5.06-6.56GHz, meet WLAN, Wi-MAX and 5G (3.3-
Demand 3.6GHz)
(3) substrate back is the earth plate of the antenna, by the rectangular metal earth plate with rectangular channel and two 1/4 round groups
At can preferably adjust the impedance matching property of antenna, increase the beamwidth of antenna.
Detailed description of the invention
Fig. 1 is the present embodiment antenna face structural schematic diagram；
Fig. 2 is the present embodiment antenna side structure schematic diagram；
Fig. 3 is the present embodiment antenna structure schematic diagram；
The S11 simulation result of the position Fig. 4 the present embodiment antenna.
Appended drawing reference:
1 is substrate；2 be antenna；3 be earth plate；4 be feed line.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment
As shown in Figures 1 to 3, a kind of flexible multifrequency antenna based on liquid crystal polymer substrate, including substrate 1, antenna 2 and connect
Floor 3, substrate 1 are flexible material, and there are two U to set on the positive circular radiation patch of substrate 1,2 main body of antenna for antenna 2
Type groove, 2 side of antenna have feed line 4, and earth plate 3 is located at 1 back side of substrate.
U-type groove is made of straightway, and two U-type groove sizes are different, and the U-type groove close to feed line 4 is smaller.
Feed line 4 is the microstrip line of 50 Ω.
Earth plate 3 is made of two 1/4 circles and the rectangular slab with rectangular channel, and rectangular slab is located between two 1/4 circles, three
Seamless connection.The height of earth plate 3 (i.e. round radius) is identical as feed line 4.
Substrate 1 is liquid crystal polymer LCP material.
As shown in figure 4,2 working frequency range of antenna is 2.09-2.78GHz, 3.20-4.60GHz and 5.06-6.56GHz.
Claims (7)
1. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate, including substrate, antenna and earth plate, which is characterized in that
The substrate is flexible material, and the antenna is the circular radiation patch positioned at substrate front side, and antenna body is equipped with two
A U-type groove, antenna side have feed line, and the earth plate is located at substrate back.
2. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate according to claim 1, which is characterized in that described
U-type groove be made of straightway.
3. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate according to claim 1, which is characterized in that two
U-type groove size is different, and the U-type groove close to feed line is smaller.
4. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate according to claim 1, which is characterized in that described
Feed line be 50 Ω microstrip line.
5. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate according to claim 1, which is characterized in that described
Earth plate be made of two 1/4 circles and rectangular slabs with rectangular channel, the rectangular slab is located between two 1/4 circles, three
Seamless connection.
6. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate according to claim 1, which is characterized in that described
Substrate be liquid crystal polymer LCP material.
7. a kind of flexible multifrequency antenna based on liquid crystal polymer substrate according to claim 1, which is characterized in that described
Antenna Operation frequency range be 2.09-2.78GHz, 3.20-4.60GHz and 5.06-6.56GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910122220.4A CN109742534A (en) | 2019-02-19 | 2019-02-19 | A flexible multi-frequency antenna based on liquid crystal polymer substrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910122220.4A CN109742534A (en) | 2019-02-19 | 2019-02-19 | A flexible multi-frequency antenna based on liquid crystal polymer substrate |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112467356A (en) * | 2019-09-09 | 2021-03-09 | 北京小米移动软件有限公司 | Antenna assembly and terminal |
| US11258184B2 (en) | 2019-08-21 | 2022-02-22 | Ticona Llc | Antenna system including a polymer composition having a low dissipation factor |
| US11555113B2 (en) | 2019-09-10 | 2023-01-17 | Ticona Llc | Liquid crystalline polymer composition |
| US11637365B2 (en) | 2019-08-21 | 2023-04-25 | Ticona Llc | Polymer composition for use in an antenna system |
| 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 |
| US11729908B2 (en) | 2020-02-26 | 2023-08-15 | Ticona Llc | Circuit structure |
| US11728559B2 (en) | 2021-02-18 | 2023-08-15 | Ticona Llc | Polymer composition for use in an antenna system |
| US11912817B2 (en) | 2019-09-10 | 2024-02-27 | Ticona Llc | Polymer composition for laser direct structuring |
| US11917753B2 (en) | 2019-09-23 | 2024-02-27 | Ticona Llc | Circuit board for use at 5G frequencies |
| US12142820B2 (en) | 2019-09-10 | 2024-11-12 | Ticona Llc | 5G system containing a polymer composition |
| US12209164B2 (en) | 2019-09-10 | 2025-01-28 | Ticona Llc | Polymer composition and film for use in 5G applications |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11705641B2 (en) | 2019-08-21 | 2023-07-18 | Ticoan Llc | Antenna system including a polymer composition having a low dissipation factor |
| US11258184B2 (en) | 2019-08-21 | 2022-02-22 | Ticona Llc | Antenna system including a polymer composition having a low dissipation factor |
| US12136762B2 (en) | 2019-08-21 | 2024-11-05 | Ticona Llc | Polymer composition for use in an antenna system |
| US11637365B2 (en) | 2019-08-21 | 2023-04-25 | Ticona Llc | Polymer composition for use in an antenna system |
| CN112467356B (en) * | 2019-09-09 | 2024-01-02 | 北京小米移动软件有限公司 | Antenna assembly and terminal |
| CN112467356A (en) * | 2019-09-09 | 2021-03-09 | 北京小米移动软件有限公司 | Antenna assembly and terminal |
| US12209164B2 (en) | 2019-09-10 | 2025-01-28 | Ticona Llc | Polymer composition and film for use in 5G applications |
| US12142820B2 (en) | 2019-09-10 | 2024-11-12 | Ticona Llc | 5G system containing a polymer composition |
| US11555113B2 (en) | 2019-09-10 | 2023-01-17 | Ticona Llc | Liquid crystalline polymer composition |
| US11912817B2 (en) | 2019-09-10 | 2024-02-27 | Ticona Llc | Polymer composition for laser direct structuring |
| US11646760B2 (en) | 2019-09-23 | 2023-05-09 | Ticona Llc | RF filter for use at 5G frequencies |
| US11917753B2 (en) | 2019-09-23 | 2024-02-27 | Ticona Llc | Circuit board for use at 5G frequencies |
| US12107617B2 (en) | 2019-09-23 | 2024-10-01 | 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 |
| US12035467B2 (en) | 2020-02-26 | 2024-07-09 | Ticona Llc | Circuit structure |
| US11729908B2 (en) | 2020-02-26 | 2023-08-15 | Ticona Llc | Circuit structure |
| US11728559B2 (en) | 2021-02-18 | 2023-08-15 | Ticona Llc | Polymer composition for use in an antenna system |
| US12230865B2 (en) | 2021-02-18 | 2025-02-18 | Ticona Llc | Polymer composition for use in an antenna system |
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