CN219696702U - Low-parabolic linear polarization antenna - Google Patents
Low-parabolic linear polarization antenna Download PDFInfo
- Publication number
- CN219696702U CN219696702U CN202320733195.5U CN202320733195U CN219696702U CN 219696702 U CN219696702 U CN 219696702U CN 202320733195 U CN202320733195 U CN 202320733195U CN 219696702 U CN219696702 U CN 219696702U
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- antenna
- dielectric substrate
- low
- linear polarization
- matching device
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- 230000010287 polarization Effects 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 36
- 230000005855 radiation Effects 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 7
- 238000005498 polishing Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model is suitable for the field of RFID (radio frequency identification), and provides a low-parabolic linear polarization antenna which comprises a dielectric substrate, a first antenna and a second antenna etched on the upper surface of the dielectric substrate, an antenna matching device arranged on the dielectric substrate, a first signal input port and a second signal input port arranged on the dielectric substrate, and a radiation regulator arranged at the bottom end of the dielectric substrate. The technical problems that the conventional inventory equipment in the prior art is large in size and heavy in weight, is unfavorable for long-time handheld work, is easy to read by mistake, reads article information outside an inventory area and brings a lot of trouble to inventory work are solved.
Description
Technical Field
The utility model belongs to the field of RFID (radio frequency identification), and particularly relates to a low-parabolic linear polarized antenna.
Background
In UHF RFID engineering applications, it is often desirable to accurately inventory items, such as libraries, archives, etc., in close proximity. The conventional common antenna is large in size and not easy to integrate into handheld counting equipment, and some common counting equipment is large in size and heavy in weight and is not beneficial to long-time handheld work. In addition, the conventional antenna is applied to the scene, so that the problem of misreading easily occurs, and the problem of trouble to inventory work is caused by reading the information of the articles outside the inventory area.
Disclosure of Invention
The utility model aims to provide a low-parabolic linear polarization antenna, which aims to solve the technical problems that the conventional inventory equipment in the prior art is large in size and heavy in weight, is unfavorable for long-time handheld work, is easy to misread, reads article information outside an inventory area and brings a lot of trouble to inventory work.
The low-parabolic linear polarization antenna comprises a dielectric substrate, a first antenna and a second antenna which are etched on the upper surface of the dielectric substrate and are arranged on two sides, an antenna matching device which is arranged on the dielectric substrate and is arranged at the joint of the first antenna and the second antenna, a first signal input port and a second signal input port which are arranged on the dielectric substrate and are welded by a radio frequency cable or a radio frequency connector and are arranged at the joint of the first antenna and the second antenna and form an antenna short circuit ring with the antenna matching device, and a radiation regulator which is arranged at the bottom end of the dielectric substrate and is used for changing the current square shape of the first antenna and the second antenna.
The utility model further adopts the technical scheme that: the low-polishing linear polarization antenna further comprises a first installation positioning hole and a second installation positioning hole which are arranged on two sides of the dielectric substrate and used for positioning and installing the low-polishing linear polarization antenna.
The utility model further adopts the technical scheme that: the dielectric substrate is made of FR4 material or ceramic or high-frequency board.
The utility model further adopts the technical scheme that: the side length of the dielectric substrate is 90mm multiplied by 40mm, and the thickness of the dielectric substrate is 0.8mm.
The utility model further adopts the technical scheme that: the first antenna and the second antenna are both radiation conductors.
The utility model further adopts the technical scheme that: the antenna matching device is one of a resistor, a capacitor or an inductor.
The utility model further adopts the technical scheme that: the antenna matching device is a patch capacitor of 6 PF.
The utility model further adopts the technical scheme that: the radiation regulator is a metal conductor with a curve structure or a straight line structure.
The beneficial effects of the utility model are as follows: the low-parabolic linear polarization antenna is small in size, light in weight, convenient to integrate in equipment, convenient and light in operation, small in occupied space of the radiation regulator with the curve structure due to the fact that the antenna size is reduced through the antenna matching device and the antenna short circuit ring, further capable of reducing the antenna size, enabling the antenna to radiate forwards, enhancing the antenna gain, and enabling the antenna to be accurately read in short-distance inventory.
Drawings
Fig. 1 is a plan view structure diagram of a low-parabolic linear polarization antenna according to an embodiment of the present utility model.
Description of the embodiments
Reference numerals: 1-a dielectric substrate 2-a first antenna 3-a second antenna 4-an antenna short circuit ring 5-an antenna matching device 6-a radiation regulator 7-a first mounting positioning hole 8-a second mounting positioning hole 9-a first signal input port 10-a second signal input port.
Fig. 1 shows a low-profile linear polarization antenna provided by the utility model, which comprises a dielectric substrate 1, a first antenna 2 and a second antenna 3 etched on the upper surface of the dielectric substrate 1 and arranged on two sides, an antenna matching device 5 arranged on the dielectric substrate 1 and arranged at the joint between the first antenna 2 and the second antenna 3, a first signal input port 9 and a second signal input port 10 arranged on the dielectric substrate 1 and arranged at the joint between the first antenna 2 and the second antenna 3 for welding a radio frequency cable or a radio frequency connector and forming an antenna short-circuit loop 4 with the antenna matching device 5, and a radiation regulator 6 arranged at the bottom end of the dielectric substrate 1 for changing the square current of the first antenna 2 and the second antenna 3. The antenna matching device 5 is welded at the joint of the first antenna 2 and the second antenna 3, and the radio frequency cable or the radio frequency connector is welded on the first signal input port 9 and the second signal input port 10 at the joint of the first antenna 2 and the second antenna 3, so that an antenna short-circuit ring 4 is formed between the first antenna 2 and the second antenna 3, and the shape and the size of the antenna short-circuit ring 4 are changed, so that the resonant frequency and the bandwidth of the antenna can be adjusted.
The low-polishing linear polarization antenna further comprises a first installation positioning hole 7 and a second installation positioning hole 8 which are arranged on two sides of the dielectric substrate 1 and used for positioning and installing the low-polishing linear polarization antenna. The first installation positioning hole 7 and the second installation positioning hole 8 are arranged on the medium substrate 1 to facilitate the positioning of the low-polishing linear polarized antenna during the installation.
The dielectric substrate 1 is made of FR4 material or ceramic or high-frequency plate material. The side length of the dielectric substrate 1 is 90mm multiplied by 40mm, and the thickness is 0.8mm. The dielectric substrate 1 can be in a regular shape or an irregular shape, and the requirements on the dielectric substrate 1 are that the dielectric substrate can be embedded into equipment, and the dimensions of the dielectric substrate 1 can be selected according to specific requirements, so that the antenna can be suitable for mounting more compact and light equipment based on the requirements.
The first antenna 2 and the second antenna 3 are both radiation conductors. The first antenna 2 and the second antenna 3 may be symmetrical or asymmetrical in structure, and the length of the first antenna and the second antenna does not affect the use, but plays a key role in the resonant frequency of the antennas, so that the resonant frequency of the length-adjustable antenna is changed.
The antenna matching device 5 is one of a resistor, a capacitor or an inductor, and the antenna matching device 5 is a patch capacitor of 6 PF; the antenna matching device 5 is welded between the first antenna 2 and the second antenna 3, and is used for impedance matching, and can also play a role in reducing the size of the antenna.
The radiation regulator 6 is a metal conductor of a curved structure or a straight structure. The length of the radiation regulator 6 is changed by a plurality of metal conductors which are Z-shaped and are connected end to form a curve structure, so that the current direction of the first antenna 2 and the second antenna 3 can be changed, the antenna field is enabled to radiate backward, forward or omnidirectionally, the length of the antenna field is determined according to specific requirements, the radiation field direction of the antenna can be determined when the antenna is designed, the curve structure is taken as an example, the current direction of the first antenna 2 and the second antenna 3 is changed by the radiation regulator 6, and the antenna radiates forward, therefore, metal substances can exist behind the antenna in the integrated equipment, and the adaptability of the antenna is enhanced.
The input impedance of the low-parabolic linear polarization antenna is 50 ohms, the gain is more than 3.15dBi, the VSWR is less than 1.3 in the frequency band of 902 MHz-928 MHz, and the maximum power of 33dBm of RFID can be borne.
The low-parabolic linear polarization antenna is small in size, light in weight, convenient to integrate in equipment, convenient and light in operation, small in occupied space of the radiation regulator with the curve structure due to the fact that the antenna size is reduced through the antenna matching device and the antenna short circuit ring, further capable of reducing the antenna size, enabling the antenna to radiate forwards, enhancing the antenna gain, and enabling the antenna to be accurately read in short-distance inventory.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. A low-parabolic linear polarization antenna is characterized in that: the low-parabolic linear polarization antenna comprises a dielectric substrate, a first antenna and a second antenna which are etched on the upper surface of the dielectric substrate and are arranged on two sides, an antenna matching device which is arranged on the dielectric substrate and is arranged at the joint of the first antenna and the upper part of the second antenna, a first signal input port and a second signal input port which are arranged on the dielectric substrate and are welded by a radio frequency cable or a radio frequency connector and form an antenna short-circuit loop with the antenna matching device, and a radiation regulator which is arranged at the bottom end of the dielectric substrate and is used for changing the square currents of the first antenna and the second antenna.
2. The low-profile linear polarization antenna of claim 1, further comprising first and second mounting and positioning holes provided on both sides of the dielectric substrate for positioning and mounting the low-profile linear polarization antenna.
3. The low-parabolic linear polarization antenna according to claim 1, wherein the dielectric substrate is made of FR4 material or ceramic or high-frequency board.
4. The low-parabolic linear polarization antenna according to claim 2, wherein the dielectric substrate has a side length of 90mm x 40mm and a thickness of 0.8mm.
5. The low-profile linear polarized antenna of claim 1, wherein the first antenna and the second antenna are both radiating conductors.
6. The low-profile linear polarized antenna of claim 5, wherein the antenna matching device is one of a resistor or a capacitor or an inductor.
7. The low-profile linear polarized antenna of claim 6, wherein the antenna matching device is a patch capacitor of 6 PF.
8. The low-parabolic linear polarization antenna according to any one of claims 1 to 7, wherein the radiation adjuster is a metal conductor of a curved structure or a straight structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320733195.5U CN219696702U (en) | 2023-03-24 | 2023-03-24 | Low-parabolic linear polarization antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320733195.5U CN219696702U (en) | 2023-03-24 | 2023-03-24 | Low-parabolic linear polarization antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219696702U true CN219696702U (en) | 2023-09-15 |
Family
ID=87970682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320733195.5U Active CN219696702U (en) | 2023-03-24 | 2023-03-24 | Low-parabolic linear polarization antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219696702U (en) |
-
2023
- 2023-03-24 CN CN202320733195.5U patent/CN219696702U/en active Active
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