CN209747712U - RFID antenna and have equipment terminal of this antenna - Google Patents
RFID antenna and have equipment terminal of this antenna Download PDFInfo
- Publication number
- CN209747712U CN209747712U CN201822066402.8U CN201822066402U CN209747712U CN 209747712 U CN209747712 U CN 209747712U CN 201822066402 U CN201822066402 U CN 201822066402U CN 209747712 U CN209747712 U CN 209747712U
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- Prior art keywords
- antenna
- circuit board
- metal plate
- rfid
- rfid antenna
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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.)
- Withdrawn - After Issue
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- 239000002184 metal Substances 0.000 claims abstract description 34
- 229910000679 solder Inorganic materials 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The utility model discloses a RFID antenna and have equipment terminal of this antenna. The RFID antenna comprises a linear antenna, a metal plate and a feeder line, wherein the linear antenna is wound into an S-shaped structure and fixed above the metal plate, a first end of the linear antenna is electrically connected with the metal plate, a second end of the linear antenna is used for being connected with a circuit board, one end of the feeder line is electrically connected with the metal plate, and the other end of the feeder line is used for being connected with the circuit board. The device terminal includes an RFID antenna, an upper cover, a lower cover, and a circuit board. The utility model discloses a specific wiring mode has reduced antenna standing-wave ratio, has optimized the performance of RFID antenna. The technical problems that the reading distance is short and the standing wave ratio is high in the prior art are solved, and therefore the RFID antenna and the equipment terminal which are beneficial to increasing the reading distance and improving the identification effect are provided.
Description
Technical Field
The utility model belongs to the technical field of the RFID technique and specifically relates to a RFID antenna and have equipment terminal of this antenna is related to.
Background
RFID: radio Frequency Identification (rfid), a communication technology, can identify a specific target and read related data through Radio signals.
Standing-wave ratio: the ratio of the voltage of the antinode of the standing wave to the amplitude of the voltage of the valley is used to indicate whether the antenna and the radio wave transmitting station are matched.
As the application field of the RFID technology is wider and wider, more users experience the convenience and high efficiency brought by the RFID technology. RFID industrial tablet computers are used in many fields. In the prior art of the RFID tablet computer, an RFID identification system mainly composed of three parts, namely an RFID antenna, a reader/writer, and an electronic tag, is generally used, the RFID antenna performs data communication on the electronic tag, and the reader/writer performs read/write operation on the electronic tag. Therefore, the RFID antenna is an important factor affecting the performance of the RFID tablet. In the prior art, the RFID tablet computer has higher requirements on the reading distance, the reading distance can only reach 0-5 m, and the RFID tablet computer is greatly limited in practical application. At present, most application scenes still use a handheld terminal to read data, but the standing-wave ratio of an antenna of the handheld terminal is generally about 1.5, and the identification effect is not very good.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model discloses an aim at provide one kind is favorable to increasing reading distance, improves the RFID antenna of discernment effect and has the equipment terminal of this antenna.
The utility model adopts the technical proposal that: an RFID antenna comprises a linear antenna, a metal plate and a feeder line, wherein the linear antenna is wound into an S-shaped structure and fixed above the metal plate, a first end of the linear antenna is electrically connected with the metal plate, a second end of the linear antenna is used for connecting a circuit board, one end of the feeder line is electrically connected with the metal plate, and the other end of the feeder line is used for connecting the circuit board.
Preferably, the metal plate has an R-shaped structure including an upper half portion and a lower half portion, the upper half portion forming a hollow, and the lower half portion being bifurcated to form a first leg portion and a second leg portion.
Preferably, the first end of the linear antenna is welded to the metal plate by a plurality of antenna welding points, and an antenna through hole for passing through the linear antenna is formed in the middle of the R-shaped structure.
Preferably, the plurality of antenna welding points are arranged in a spoon shape and extend to the first leg portion of the R-shaped structure of the metal plate.
Preferably, one end of the feed line is welded to the metal plate by a plurality of feed line welding points.
Preferably, the linear antenna and the feed line are linearly polarized antennas.
The utility model provides an equipment terminal, includes foretell RFID antenna and upper cover, lower cover, circuit board, the upper cover with the lower cover is connected and is formed the cavity, RFID antenna, circuit board set up in the cavity, the RFID antenna sets up the circuit board top, the internal surface of upper cover is provided with S-shaped wire casing, the line type antenna sets up in the S-shaped wire casing.
Preferably, a buckle is arranged on the circuit board, and the other end of the feeder line is electrically connected with the circuit board and fixed on the circuit board through the buckle.
Preferably, the device terminal further includes a fixing member, which is disposed between the RFID antenna and the circuit board and is used to fix the second end of the linear antenna on the circuit board.
Preferably, the device terminal further comprises a waterproof ring, the waterproof ring is arranged in the lower cover, and the circuit board is arranged in the waterproof ring.
Preferably, the device terminal is a tablet computer.
The utility model has the advantages that:
The utility model discloses make the line type antenna winding into S-shaped structure, first end and metal sheet electric connection, the second end is connected with the circuit board, the one end and the metal sheet electric connection of feeder, the other end is connected with the circuit board. The antenna standing wave ratio is reduced through a specific wiring mode, and the performance of the RFID antenna is optimized.
The utility model discloses another beneficial effect is:
The utility model discloses a with the RFID antenna setting in equipment terminal, fix S-shaped line type antenna in the S-shaped wire casing of equipment terminal upper cover, be favorable to increasing the reading distance at equipment terminal, improve recognition effect.
Drawings
fig. 1 is a schematic structural diagram of an embodiment of an RFID antenna according to the present invention
Fig. 2 is an overall exploded view of one embodiment of an equipment terminal with an RFID antenna according to the present invention;
Fig. 3 is a schematic structural diagram of an upper cover of an apparatus terminal with an RFID antenna according to the present invention;
fig. 4 is a schematic structural diagram of a circuit board of an apparatus terminal with an RFID antenna according to the present invention;
Fig. 5 is a schematic waveform diagram of the standing-wave ratio of the RFID antenna of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The utility model discloses a RFID antenna, as shown in figure 1, RFID antenna includes line type antenna 1 and metal sheet 2. The linear antenna 1 is wound into an S-shaped structure and fixed above the metal plate 2, a first end of the linear antenna 1 is electrically connected with the metal plate 2, and a second end of the linear antenna 1 is used for connecting a circuit board.
To assist in adjusting the standing wave ratio, the RFID antenna also includes a feed line 3. One end of the feeder line 3 is electrically connected with the metal plate 2, and the other end of the feeder line 3 is used for connecting a circuit board.
In the present embodiment, the metal plate 2 has an R-shaped structure including an upper half and a lower half. Wherein the upper half forms a hollow 21 and the lower half bifurcates to form a first leg portion 22 and a second leg portion 23. The first end of the wire antenna 1 is soldered to the metal plate 2 by a plurality of antenna soldering points 24. One end of the feeder 3 is also connected to the metal plate 2 by welding via a plurality of feeder welding points 25.
In the present embodiment, the middle portion of the R-shaped structure is provided with an antenna via hole 26 for passing through the wire antenna 1. The addition of the antenna via hole 26 can make the linear antenna 1 stick to the metal plate 2, which is beneficial to fixing the linear antenna 1.
As shown in fig. 1, in order to stabilize the line antenna 1 while saving space, a plurality of antenna welding points 24 are arranged in a spoon shape and extend to the first leg portion 22 of the R-shaped structure of the metal plate 2. And the fixing mode is also beneficial to improving the radiation performance of the antenna and reducing the standing-wave ratio.
In this embodiment, the linear antenna 1 and the feeder 3 are both linear polarization antennas.
The utility model also discloses an equipment terminal. As shown in fig. 2, the device terminal includes an upper cover 4, a lower cover 5, a circuit board 6, and an RFID antenna 7. The upper cover 4 and the lower cover 5 are connected to form a cavity, the circuit board 6 and the RFID antenna 7 are arranged in the cavity, the RFID antenna 7 is arranged between the upper cover 4 and the circuit board 6, and the circuit board 6 is arranged between the RFID antenna 7 and the lower cover 5.
As shown in fig. 3, the inner surface of the upper cover 4 is provided with an S-shaped wire groove 41, and the S-shaped wire antenna 1 is matched with the S-shaped wire groove 41 and fixed in the S-shaped wire groove 41.
in this embodiment, the S-shaped groove 41 may be disposed above the inner surface of the upper cover 4, near the edge of the upper cover 4.
In order to better fix one end of the feed line 3 on the circuit board 6, as shown in fig. 4, a plurality of latches 61(TP4 to TP8) are provided on the circuit board 6, and one end of the feed line 3 is fixed on the circuit board 6 by the plurality of latches 61. Meanwhile, a fixing member 8 is further disposed between the circuit board 6 and the metal plate 2, and the fixing member 8 is provided with a plurality of through holes for fixing the second end of the line antenna 1 on the circuit board 6.
In this embodiment, the device terminal further includes a waterproof ring 9, the waterproof ring 9 is disposed in the lower cover 5, and the circuit board 6 is disposed in the waterproof ring 9. The waterproof ring 9 encapsulates the circuit board 6 and prevents external liquid from entering the terminal of the device and damaging the circuit board 6.
The edges of the upper cover 4 and the lower cover 5 are provided with a plurality of screw holes and a plurality of threads which correspond up and down, and the upper cover 4 and the lower cover 5 are assembled through the plurality of screw holes and the threads in a screw connection mode.
in this embodiment, the device terminal includes a tablet computer and other communication devices.
The linear polarization antenna of the embodiment is suitable for the frequency band of 902 MHz-928 MHz. And (3) carrying out a complete machine test on the equipment terminal, wherein the complete machine test is a standing-wave ratio oscillogram after the test as shown in fig. 5. It can be seen from the figure that the antenna standing wave ratio of the terminal of the device can be reduced to below 1.3 in the frequency band between 902MHz and 915 MHz. The lowering of the standing-wave ratio reduces the reflected part of the electric wave, the temperature of the feeder line cannot be greatly raised, and the danger that the reflected electric wave generates high voltage too much is avoided. Moreover, the reading distance of the equipment terminal of the embodiment can be increased to 0-8 m.
The utility model discloses make the line type antenna winding into S-shaped structure, first end and metal sheet electric connection, the second end is connected with the circuit board, the one end and the metal sheet electric connection of feeder, the other end is connected with the circuit board. The antenna standing wave ratio is reduced through a specific wiring mode, and the performance of the RFID antenna is optimized. The technical problems that the reading distance is short and the standing wave ratio is high in the prior art are solved, and therefore the RFID antenna which is beneficial to increasing the reading distance and improving the identification effect is provided.
The utility model discloses still through setting up the RFID antenna in equipment terminal, fix S-shaped line type antenna in the S-shaped wire casing of equipment terminal upper cover, be favorable to increasing the reading distance at equipment terminal, improve the discernment effect, but wide application in RFID reading equipment field.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (11)
1. An RFID antenna, characterized by comprising a linear antenna, a metal plate and a feeder line, wherein the linear antenna is wound into an S-shaped structure and fixed above the metal plate, a first end of the linear antenna is electrically connected with the metal plate, a second end of the linear antenna is used for connecting a circuit board, one end of the feeder line is electrically connected with the metal plate, and the other end of the feeder line is used for connecting the circuit board.
2. The RFID antenna of claim 1, wherein the metal plate has an R-shaped structure, the R-shaped structure comprising an upper half and a lower half, the upper half forming a hollow, the lower half diverging to form a first leg portion and a second leg portion.
3. The RFID antenna of claim 2, wherein the first end of the wire antenna is soldered to the metal plate by a plurality of antenna solder joints, and wherein the middle portion of the R-shaped structure is provided with an antenna via for passing through the wire antenna.
4. An RFID antenna according to claim 3, wherein the plurality of antenna welds are arranged in a spoon shape and extend to the first leg portion of the R-shaped structure of the metal plate.
5. The RFID antenna of claim 1, wherein one end of the feed line is soldered to the metal plate by a plurality of feed line solder joints.
6. An RFID antenna according to any of claims 1 to 5, wherein the linear antenna and the feed are linearly polarised antennas.
7. An equipment terminal, comprising the RFID antenna according to any of claims 1-6, and an upper cover, a lower cover, and a circuit board, wherein the upper cover and the lower cover are connected to form a cavity, the RFID antenna and the circuit board are disposed in the cavity, the RFID antenna is disposed between the upper cover and the circuit board, the circuit board is disposed between the RFID antenna and the lower cover, an S-shaped slot is disposed on an inner surface of the upper cover, and the linear antenna is fixed in the S-shaped slot.
8. The device terminal of claim 7, wherein a buckle is disposed on the circuit board, and the other end of the feeder is electrically connected to the circuit board and fixed to the circuit board by the buckle.
9. The device terminal of claim 7, further comprising a fastener disposed between the RFID antenna and the circuit board for securing the second end of the wire antenna to the circuit board.
10. The device terminal of claim 7, further comprising a waterproof ring disposed within the lower cover, wherein the circuit board is disposed within the waterproof ring.
11. A device terminal according to any of claims 7-10, wherein the device terminal is a tablet computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822066402.8U CN209747712U (en) | 2018-12-10 | 2018-12-10 | RFID antenna and have equipment terminal of this antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822066402.8U CN209747712U (en) | 2018-12-10 | 2018-12-10 | RFID antenna and have equipment terminal of this antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209747712U true CN209747712U (en) | 2019-12-06 |
Family
ID=68702776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822066402.8U Withdrawn - After Issue CN209747712U (en) | 2018-12-10 | 2018-12-10 | RFID antenna and have equipment terminal of this antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209747712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659668A (en) * | 2018-12-10 | 2019-04-19 | 深圳市鸿陆技术有限公司 | A kind of RFID antenna and the device end with the antenna |
-
2018
- 2018-12-10 CN CN201822066402.8U patent/CN209747712U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659668A (en) * | 2018-12-10 | 2019-04-19 | 深圳市鸿陆技术有限公司 | A kind of RFID antenna and the device end with the antenna |
| CN109659668B (en) * | 2018-12-10 | 2024-02-13 | 深圳市鸿陆技术有限公司 | RFID antenna and equipment terminal with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191206 Effective date of abandoning: 20240213 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191206 Effective date of abandoning: 20240213 |