CN111628269A - Frequency-adjustable antenna, manufacturing method and antenna device - Google Patents
Frequency-adjustable antenna, manufacturing method and antenna device Download PDFInfo
- Publication number
- CN111628269A CN111628269A CN202010570948.6A CN202010570948A CN111628269A CN 111628269 A CN111628269 A CN 111628269A CN 202010570948 A CN202010570948 A CN 202010570948A CN 111628269 A CN111628269 A CN 111628269A
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- China
- Prior art keywords
- antenna
- antenna assembly
- radio frequency
- frequency switch
- switch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
- H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
-
- 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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a frequency-adjustable antenna, a manufacturing method and an antenna device, comprising a feeder line, a first antenna component, a radio frequency switch and a second antenna component; one end of the first antenna assembly is electrically connected with the feeder line, and the other end of the first antenna assembly is electrically connected with one end of the second antenna assembly; one end of the radio frequency switch is connected with the end part of the second antenna component close to the first antenna component; the first antenna assembly, the second antenna assembly and the radio frequency switch are connected to form an antenna assembly, and the antenna assembly changes the on-off of the radio frequency switch so as to change the corresponding frequency of the antenna assembly; the radio frequency switch changes the insulation value of the radio frequency switch through temperature change, and therefore on-off is achieved. According to the antenna, the antenna is miniaturized by sharing part of the antenna elements by two frequency bands, and the adverse effect on antenna radiation signals caused by coupling current generated by the biasing circuit when the switch is switched on and switched off is reduced; the radio frequency switch has simple manufacturing process and low cost, and replaces an expensive electronic switch.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a frequency-adjustable antenna, a manufacturing method and an antenna device.
Background
The OBU antenna is used for paying for FM/AM and ETC to use different frequency bands, and often needs more space to arrange a plurality of antennas, so that the problems of electromagnetic interference, compatibility and the like are easily caused; with the rapid development of wireless communication technology, characteristic parameters of antennas are required to be adjusted according to changes of environment and application occasions, and in order to reduce the problem of electromagnetic compatibility, a plurality of systems are generally expected to share one antenna, which promotes the development of dual-frequency or even multi-frequency technology of the antennas, and a single antenna replaces a plurality of antennas, so that not only is the occupied space greatly reduced, but also the production cost is reduced, and resources are saved.
With the research and development of electronic technology and micro-Mechanical Electronics (MEMS) technology, people load an electronic PIN switch or MEMS switch on an antenna radiator while keeping the position of the antenna itself unchanged, and switch the on-off state of the electronic switch in real time according to the communication requirement by changing the dc bias voltage of the electronic switch, so as to change the structural size of the antenna radiator, but there are the following problems:
1. when the electronic switch is switched on and off, the coupling current generated by the biasing circuit has adverse effect on the antenna radiation signal;
2. more electronic switches are needed; and is a microfabrication process using a complex and expensive clean room environment.
Disclosure of Invention
In order to solve the above problems, the present invention provides a frequency-adjustable antenna, a manufacturing method thereof, and an antenna apparatus, so as to solve the above technical problems.
In order to achieve the purpose, the invention adopts the technical scheme that: a frequency tunable antenna comprises a feed line, a first antenna assembly, a radio frequency switch and a second antenna assembly; one end of the first antenna assembly is electrically connected with the feeder line, and the other end of the first antenna assembly is electrically connected with one end of the second antenna assembly; one end of the radio frequency switch is connected with the end part of the second antenna component close to the first antenna component; the first antenna assembly, the second antenna assembly and the radio frequency switch are connected to form an antenna assembly, and the antenna assembly changes the on-off of the radio frequency switch so as to change the corresponding frequency of the antenna assembly; the radio frequency switch changes the insulation value of the radio frequency switch through temperature change, and therefore on-off is achieved.
As a preferred technical scheme of the invention: and when the temperature of the radio frequency switch is higher than the transition temperature, the radio frequency switch is in a switch-on state.
As a preferred technical scheme of the invention: the radio frequency switch is made of conductive silver paste added with vanadium oxide nano particles.
As a preferred technical scheme of the invention: the antenna assembly is configured as an OBU antenna assembly.
As a preferred technical scheme of the invention: when the radio frequency switch is disconnected, the antenna assembly and the feeder line form an FM/AM antenna.
As a preferred technical scheme of the invention: when the radio frequency switch is conducted, the antenna assembly and the feeder line form an ETC antenna.
A manufacturing method of a frequency-adjustable antenna comprises the following steps:
s1: the feeder line, the first antenna assembly and the second antenna assembly in the technical scheme are arranged on the vehicle glass;
s2: the radio frequency switch in the technical scheme is arranged on the glass of the vehicle.
As a preferred technical scheme of the invention: further comprising S3: curing the feeder line, the first antenna assembly, the radio frequency switch and the second antenna assembly at a temperature of 140-160 ℃ for 20-40 minutes;
the conductive silver paste is adopted in the step S1, and the conductive silver paste added with the vanadium oxide nano particles is adopted in the step S2.
As a preferred technical scheme of the invention: the average particle size of the vanadium oxide nanoparticles is 80-100 nanometers, and the vanadium oxide nanoparticles are added into the conductive silver paste in a solution method.
As a preferred technical scheme of the invention: the feeder line, the first antenna assembly, the radio frequency switch and the second antenna assembly are printed on the vehicle glass in an ink jet printing or screen printing ink mode.
As a preferred technical scheme of the invention: the vehicle glass is laminated glass, and the laminated glass comprises a first glass panel, an intermediate layer and a second glass panel which are sequentially connected; the feed line, the first antenna assembly, the radio frequency switch and the second antenna assembly are printed in an intermediate layer.
A frequency-adjustable antenna device comprises a heating wire, vehicle glass and at least one group of antennas with adjustable frequency in the technical scheme; the antenna with adjustable frequency is arranged on the vehicle glass, and the heating wire is arranged on the vehicle glass.
As a preferred technical scheme of the invention: the vehicle glass is laminated glass, and the laminated glass comprises a first glass panel, an intermediate layer and a second glass panel which are sequentially laminated; the frequency-adjustable antenna is arranged in the middle layer of the laminated glass, and the heating wire is arranged in the middle layer of the laminated glass.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the antenna is miniaturized by sharing part of the antenna elements by the two frequency bands, and the adverse effect on antenna radiation signals caused by coupling current generated by the biasing circuit when the switch is switched on and switched off is reduced.
2. The radio frequency switch can be activated only by low heat, so that the use is convenient, and the frequency switching is convenient.
3. The radio frequency switch has simple manufacturing process and low cost, and replaces an expensive electronic switch.
Drawings
FIG. 1 is a schematic diagram of an overall structure of a frequency tunable antenna according to the present invention;
fig. 2 is a schematic diagram of an overall structure of a frequency tunable antenna apparatus according to the present invention;
in fig. 1-2, 1, a first glass panel, 2, a second glass panel, 3, a frequency tunable antenna, 4, an intermediate layer, 5, a heating wire, 6, a feeder, 7, a radio frequency switch, 8, a first antenna assembly, 9, and a second antenna assembly.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the embodiment of the present invention provides a frequency tunable antenna, which includes a feeder 6, a first antenna assembly 8, a radio frequency switch 7, and a second antenna assembly 9; one end of the first antenna component 8 is electrically connected with the feeder 6, and the other end is electrically connected with one end of the second antenna component 9; one end of the radio frequency switch 7 is connected to the end of the second antenna component 9 near the first antenna component 8; the first antenna assembly 8, the second antenna assembly 9 and the radio frequency switch 7 are connected to form an antenna assembly, the antenna assembly changes the corresponding frequency by changing the on-off state of the radio frequency switch 7, namely when the radio frequency switch 7 is in an off state, the first antenna assembly 8 and the second antenna assembly 9 are connected with the feeder 6, the antenna assembly is in one frequency, when the radio frequency switch 7 is switched on, the second antenna assembly 9 is in a short circuit state through the radio frequency switch 7, only the first antenna assembly 8 is connected with the feeder 6, and when the antenna assembly is in the other frequency, the frequency of the antenna assembly is changed by on-off state of the radio frequency switch 7, so that the frequency of the antenna assembly is changed, two frequency bands share a part of antenna elements, and the antenna is miniaturized.
The radio frequency switch 7 changes the insulation value thereof through the temperature change of the environment, thereby realizing the on-off; for example, the radio frequency switch 7 is printed by conductive silver paste added with vanadium oxide nano particles, namely VO2VO when it is 68 ℃ below the transition temperature2The material behaves as a dielectric and, above the transition temperature, it exhibits electrical conductivity. When the temperature of the radio frequency switch 7 is higher than 68 ℃, the radio frequency switch 7 is in a connected state, and the second antenna assembly 9 is in a short circuit, so that the on-off of the radio frequency switch 7 can be controlled through lower temperature, the switching of different frequencies is realized, and the vanadium oxide switch can be activated by lower heat; meanwhile, the adverse effect of the coupling current generated by the biasing circuit on the antenna radiation signal when the electronic switch is switched on and off is avoided; when the present embodiment is applied to an antenna of a vehicle, the first antenna group may beThe element 8 is set as an OBU antenna component, and the first antenna component 8 and the second antenna component 9 jointly form an FM/AM antenna element, although the first antenna component 8 and the second antenna component 9 can be applied to other antennas according to actual needs; when the vehicle runs to an ETC toll station or approaches to a certain distance from an ETC entrance or an ETC exit, the radio frequency switch 7 is heated or the radio frequency switch 7 is started in advance to be heated, so that the vehicle is in an on state, namely the switch is closed, only the OBU antenna assembly works, the automatic toll collection function of the ETC is realized, the radio frequency switch 7 is always in an off state in the normal running process, and the OBU antenna assembly and the second antenna assembly 9 jointly form an FM/AM antenna element to realize the FM/AM receiving function.
The invention also provides a manufacturing method of the antenna with adjustable frequency, which comprises the following steps:
s1: printing the feeder line, the first antenna assembly and the second antenna assembly on the vehicle glass in the embodiment;
s2: the radio frequency switch in the above embodiment is printed on the glass of the vehicle. The manufacturing method enables the manufacturing process of the antenna with adjustable frequency to be simple and easy to form, and solves the defects that the antenna needs to be directly connected through welding or epoxy resin in the prior art, and the manufacturing steps are expensive and complex;
in order to make the printing have better effect, the method further comprises the step S3: curing the printed feeder line, the first antenna assembly, the radio frequency switch and the second antenna assembly at the temperature of 140-160 ℃ for 20-40 minutes, preferably at the temperature of 150 ℃ for 30 minutes, wherein the feeder line, the first antenna assembly and the second antenna assembly in the step S1 are printed by using conductive silver paste, and the printing mode is preferably printing by using ink jet printing or screen printing ink; the radio frequency switch in the step S2 is made of conductive silver paste added with vanadium oxide nanoparticles, wherein the average particle size of the vanadium oxide nanoparticles is 80-100 nanometers, and the vanadium oxide nanoparticles are added into the conductive silver paste in a solution method, so that the manufacturing process is simple and the cost is low.
In order to prevent damage, the vehicle glass is preferably laminated glass, and the laminated glass comprises a first glass panel, an intermediate layer and a second glass panel which are sequentially laminated; the feeder line, the first antenna assembly, the radio frequency switch and the second antenna assembly are printed on the middle layer; the first antenna component, the radio frequency switch and the second antenna component are printed to a thickness of 30 μm.
As shown in fig. 2, the present invention also provides a frequency tunable antenna device, which comprises a heating wire 5, a vehicle glass and the above-mentioned frequency tunable antenna 3; the frequency-tunable antenna 3 is arranged on the vehicle glazing, and the heating wire 5 is arranged on the vehicle glazing.
The vehicle glass is laminated glass, and the laminated glass comprises a first glass panel 1, an intermediate layer 4 and a second glass panel 2 which are sequentially connected; the tunable frequency antenna 3 may be disposed on a surface of the interlayer 4 of the laminated glass, such as on a surface of the interlayer 4 adjacent to the first glass panel 1, or the tunable frequency antenna 3 may be disposed on an inner surface of the first glass panel 1; the heating wire 5 can be arranged on the surface of the interlayer 4 of the laminated glass, for example, on the interlayer 4 arranged close to the second glass panel 2, and the heating wire 5 can also be arranged on the inner surface of the second glass panel 2, in order to protect the frequency-adjustable antenna 3, it is preferable that the frequency-adjustable antenna 3 is arranged on the interlayer 4 of the laminated glass close to the first glass panel 1, and the heating wire 5 is arranged on the interlayer 4 of the laminated glass close to the second glass panel 2, and the interlayer is preferably a PVB sheet, and by heating of the heating wire 5, the radio frequency switch in the frequency-adjustable antenna 3 can be heated, so that the radio frequency switch is heated to the transition temperature, and the insulation performance of the radio frequency switch is changed, thereby realizing the switching of the frequency; of course, a plurality of groups of antennas 3 with adjustable frequencies can be set according to requirements, so as to meet different frequency requirements of different environments and application occasions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (13)
1. An antenna with adjustable frequency, characterized in that: the antenna comprises a feeder line, a first antenna assembly, a radio frequency switch and a second antenna assembly; one end of the first antenna assembly is electrically connected with the feeder line, and the other end of the first antenna assembly is electrically connected with one end of the second antenna assembly; one end of the radio frequency switch is connected with the end part of the second antenna component close to the first antenna component; the first antenna assembly, the second antenna assembly and the radio frequency switch are connected to form an antenna assembly, and the antenna assembly changes the on-off of the radio frequency switch so as to change the corresponding frequency of the antenna assembly; the radio frequency switch changes the insulation value of the radio frequency switch through temperature change, and therefore on-off is achieved.
2. A frequency tunable antenna according to claim 1, wherein: and when the temperature of the radio frequency switch is higher than the transition temperature, the radio frequency switch is in a switch-on state.
3. A frequency tunable antenna according to claim 2, wherein: the radio frequency switch is made of conductive silver paste added with vanadium oxide nano particles.
4. A frequency tuneable antenna according to any one of claims 1-3, characterised in that: the antenna assembly is configured as an OBU antenna assembly.
5. A frequency tunable antenna according to claim 4, wherein: when the radio frequency switch is disconnected, the antenna assembly and the feeder line form an FM/AM antenna.
6. A frequency tunable antenna according to claim 4, wherein: when the radio frequency switch is conducted, the antenna assembly and the feeder line form an ETC antenna.
7. A manufacturing method of a frequency-adjustable antenna is characterized by comprising the following steps: the method comprises the following steps:
s1: disposing the feed line, first antenna assembly, second antenna assembly of claims 1-6 on a vehicle glazing;
s2: disposing the radio frequency switch of claims 1-6 on a vehicle glazing.
8. The method of claim 7, wherein the method comprises: further comprising S3: curing the feeder line, the first antenna assembly, the radio frequency switch and the second antenna assembly at a temperature of 140-160 ℃ for 20-40 minutes;
the conductive silver paste is adopted in the step S1, and the conductive silver paste added with the vanadium oxide nano particles is adopted in the step S2.
9. The method of claim 8, wherein the method comprises: the average particle size of the vanadium oxide nanoparticles is 80-100 nanometers, and the vanadium oxide nanoparticles are added into the conductive silver paste in a solution method.
10. A method for manufacturing a frequency tunable antenna according to any one of claims 7-9, wherein: the feeder line, the first antenna assembly, the radio frequency switch and the second antenna assembly are printed on the vehicle glass in an ink jet printing or screen printing ink mode.
11. The method of claim 10, wherein: the vehicle glass is laminated glass, and the laminated glass comprises a first glass panel, an intermediate layer and a second glass panel which are sequentially connected; the feed line, the first antenna assembly, the radio frequency switch and the second antenna assembly are printed in an intermediate layer.
12. An antenna device with adjustable frequency, characterized in that: comprising a heating wire, a vehicle glazing and at least one set of frequency tunable antennas according to claims 1-6; the antenna with adjustable frequency is arranged on the vehicle glass, and the heating wire is arranged on the vehicle glass.
13. A frequency tunable antenna device according to claim 12, wherein; the vehicle glass is laminated glass, and the laminated glass comprises a first glass panel, an intermediate layer and a second glass panel which are sequentially laminated; the frequency-adjustable antenna is arranged in the middle layer of the laminated glass, and the heating wire is arranged in the middle layer of the laminated glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010570948.6A CN111628269A (en) | 2020-06-22 | 2020-06-22 | Frequency-adjustable antenna, manufacturing method and antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010570948.6A CN111628269A (en) | 2020-06-22 | 2020-06-22 | Frequency-adjustable antenna, manufacturing method and antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111628269A true CN111628269A (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010570948.6A Pending CN111628269A (en) | 2020-06-22 | 2020-06-22 | Frequency-adjustable antenna, manufacturing method and antenna device |
Country Status (1)
| Country | Link |
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| CN (1) | CN111628269A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113757A (en) * | 2021-04-13 | 2021-07-13 | 福耀玻璃工业集团股份有限公司 | Vehicle window and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0206775A2 (en) * | 1985-06-21 | 1986-12-30 | Toyota Jidosha Kabushiki Kaisha | Automobile antenna system |
| US4967202A (en) * | 1988-02-25 | 1990-10-30 | Central Glass Company, Limited | Vehicle window glass antenna suited to reception of FM radio and TV broadcasting |
| CN1714471A (en) * | 2002-11-18 | 2005-12-28 | 株式会社友华 | Antenna for a plurality of bands |
| CN102407753A (en) * | 2011-08-25 | 2012-04-11 | 福耀玻璃工业集团股份有限公司 | Laminated glass with antenna function |
| CN109155458A (en) * | 2016-03-22 | 2019-01-04 | 埃尔瓦有限公司 | System and method for reducing the intermodulation of electronically controlled adaptive antenna array |
-
2020
- 2020-06-22 CN CN202010570948.6A patent/CN111628269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0206775A2 (en) * | 1985-06-21 | 1986-12-30 | Toyota Jidosha Kabushiki Kaisha | Automobile antenna system |
| US4967202A (en) * | 1988-02-25 | 1990-10-30 | Central Glass Company, Limited | Vehicle window glass antenna suited to reception of FM radio and TV broadcasting |
| CN1714471A (en) * | 2002-11-18 | 2005-12-28 | 株式会社友华 | Antenna for a plurality of bands |
| CN102407753A (en) * | 2011-08-25 | 2012-04-11 | 福耀玻璃工业集团股份有限公司 | Laminated glass with antenna function |
| CN109155458A (en) * | 2016-03-22 | 2019-01-04 | 埃尔瓦有限公司 | System and method for reducing the intermodulation of electronically controlled adaptive antenna array |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113757A (en) * | 2021-04-13 | 2021-07-13 | 福耀玻璃工业集团股份有限公司 | Vehicle window and vehicle |
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Application publication date: 20200904 |