CN212906331U - UHF ultrahigh frequency four-channel radio frequency reader-writer module - Google Patents
UHF ultrahigh frequency four-channel radio frequency reader-writer module Download PDFInfo
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- CN212906331U CN212906331U CN202021735145.3U CN202021735145U CN212906331U CN 212906331 U CN212906331 U CN 212906331U CN 202021735145 U CN202021735145 U CN 202021735145U CN 212906331 U CN212906331 U CN 212906331U
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Abstract
The utility model discloses a UHF hyperfrequency four-channel radio frequency reader-writer module, including the PCB board, it has reader-writer chip, radio frequency power amplifier, coupler and antenna to distribute on the PCB board, the reader-writer chip is located the upper right portion of PCB board, radio frequency power amplifier is located the left middle part of PCB board, the coupler is located the well upper portion of PCB board, just the coupler is located the upper left side of reader-writer chip, the antenna is located the top of coupler. The utility model discloses a change the position relation of component in the circuit for line length is the shortest to be walked in the connection between reader writer chip, radio frequency power amplifier and the coupler, thereby reduces the loss of power, strengthens antenna signal's receiving and dispatching performance.
Description
Technical Field
The utility model relates to an hyperfrequency radio frequency circuit optimizes the field, and specific theory relates to a UHF hyperfrequency four-channel radio frequency reader module.
Background
The ultrahigh frequency reader-writer adopts a radio frequency identification technology, combines a special efficient signal processing algorithm, realizes the rapid read-write processing of the electronic tag while keeping high identification, and can be applied to various wireless radio frequency identification systems such as logistics, access control, anti-counterfeiting, unmanned retail, production process control and the like.
With the wide use of ultrahigh frequency readers, people have higher and higher requirements on the signal transceiving performance of the ultrahigh frequency readers, the traditional ultrahigh frequency readers are short in reading distance and weak in multi-tag checking capability and cannot meet the requirements of application systems, the transceiving and receiving capabilities of the antennas are enhanced by a method of hanging a plurality of antennas on one reader, but the method is limited by the performance of hardware.
The above disadvantages need to be improved.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, the utility model provides a UHF hyperfrequency four-channel radio frequency reader module.
The utility model discloses technical scheme as follows:
a UHF and UHF four-channel radio frequency reader-writer module comprises a PCB and is characterized in that a reader-writer chip, a radio frequency power amplifier, a coupler and an antenna are distributed on the PCB, the reader-writer chip is located on the right upper portion of the PCB, the radio frequency power amplifier is located in the left middle portion of the PCB, the coupler is located on the middle upper portion of the PCB, the coupler is located on the left upper portion of the reader-writer chip, and the antenna is located above the coupler.
According to above-mentioned scheme the utility model discloses, its characterized in that, the geometric centre point of reader writer chip the geometric centre point of radio frequency power amplifier reaches form an isosceles triangle behind the two liang of lines of geometric centre point of coupler.
Further, the geometric center point of the reader-writer chip, the geometric center point of the radio frequency power amplifier and the geometric center point of the coupler are connected in pairs to form an equilateral triangle.
According to above-mentioned scheme the utility model discloses, a serial communication port, the reader writer chip through the transmission radio frequency line with radio frequency power amplifier connects, radio frequency power amplifier pass through the power amplifier radio frequency line with the first end of coupler is connected, the second end of coupler pass through the antenna radio frequency line with antenna connection, the third end of coupler through the carrier wave offset the radio frequency line with the reader writer chip is connected, the fourth end of coupler through receive the radio frequency line with the reader writer chip is connected.
According to above-mentioned scheme the utility model discloses, a serial communication port, the transmission radio frequency line the power amplifier radio frequency line the antenna radio frequency line the carrier wave offsets the radio frequency line and the line of walking of receiving radio frequency line corner is the arc and walks the line.
Further, the carrier cancellation rf line and the receiving rf line are both L-shaped.
According to above-mentioned scheme the utility model discloses, a serial communication port, still there is the ARM treater on the PCB board, the ARM treater is located the well lower part of PCB board.
Further, the ARM processor is connected with the reader-writer chip and the upper computer respectively.
According to above-mentioned scheme the utility model discloses, a serial communication port, the read write line chip is R2000 hyperfrequency read write line chip.
According to the above scheme the utility model discloses, the beneficial effects of the utility model reside in that:
the utility model discloses a arrange the reader-writer chip in the upper right portion of PCB board, radio frequency power amplifier arranges in the left middle part of PCB board, and the coupler is arranged in the well upper portion of PCB board, and forms an equilateral triangle behind two liang of lines of the geometric centre point of reader-writer chip, the geometric centre point of radio frequency power amplifier and the geometric centre point of coupler for the connection between reader-writer chip, radio frequency power amplifier and the coupler is walked line length the shortest, thereby reduces the loss of power, strengthens antenna signal's receiving and dispatching performance;
2. the transmission radio frequency line, the power amplifier radio frequency line, the antenna radio frequency line, the carrier cancellation radio frequency line and the wiring at the corner of the receiving radio frequency line are all arc-shaped wiring without a folding angle, so that the signals are not attenuated;
3. the carrier wave counteracting radio frequency line and the receiving radio frequency line are both L-shaped, and short circuit caused by touching a via hole of a paint piece on the reverse side of the PCB can be avoided.
Drawings
Fig. 1 is a schematic diagram of the layout structure of the PCB of the present invention;
fig. 2 is a schematic diagram of signal transmission according to the present invention;
in the figures, the reference numerals are as follows:
1. a PCB board; 2. a reader chip; 3. a radio frequency power amplifier; 4. a coupler; 5. an antenna; 6. an ARM processor; 7. an upper computer; 21. transmitting a radio frequency line; 22. a carrier cancellation radio frequency line; 23. receiving a radio frequency line; 31. a power amplifier radio frequency line; 41. An antenna radio frequency line.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail.
It will be understood that when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "middle", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are only for convenience of description and should not be construed as limiting the technical solution. The terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features.
As shown in fig. 1, a UHF ultra high frequency four-channel radio frequency reader module includes a PCB board 1, a reader chip 2, a radio frequency power amplifier 3, a coupler 4, an antenna 5 and an ARM processor 6 are distributed on the PCB board 1, the reader chip 2 is located at the upper right portion of the PCB board 1, the radio frequency power amplifier 3 is located at the middle left portion of the PCB board 1, the coupler 4 is located at the upper middle portion of the PCB board 1, the coupler 4 is located at the upper left portion of the reader chip 2, the antenna 5 is located above the coupler 4, the ARM processor 6 is located at the lower middle portion of the PCB board 1, and a geometric center point of the reader chip 2, a geometric center point of the radio frequency power amplifier 3 and a geometric center point of the coupler 4 are connected in pairs to form an isosceles triangle. The utility model discloses an arrange reader-writer chip 2 in PCB board 1's upper right portion, radio frequency power amplifier 3 arranges at PCB board 1's left middle part, coupler 4 arranges on PCB board 1's well upper portion, reader-writer chip 2's geometric centre point, form an isosceles triangle behind the two liang of lines of geometric centre point of radio frequency power amplifier 3 and coupler 4, reduce reader-writer chip 2, line length is walked in the connection between radio frequency power amplifier 3 and the coupler 4, thereby the loss of power reduction, strengthen antenna signal's transceiving performance.
In this embodiment, the geometric center of the reader/writer chip 2, the geometric center of the rf power amplifier 3, and the geometric center of the coupler 4 are connected in pairs to form an equilateral triangle, so that the connection routing length between the reader/writer chip 2, the rf power amplifier 3, and the coupler 4 is the shortest, thereby reducing power loss and enhancing the transceiving performance of antenna signals.
In the present embodiment, the reader/writer chip 2 is connected to the rf power amplifier 3 through the transmission rf line 21; the radio frequency power amplifier 3 is connected with the first end of the coupler 4 through a power amplifier radio frequency line 31; the second end of the coupler 4 is connected with the antenna 5 through an antenna radio frequency line 41 and used for transmitting signals and receiving signals; the third end of the coupler 4 is connected with the reader-writer chip 2 through a carrier cancellation radio frequency line 22 to play a role of carrier cancellation; the fourth end of the coupler 4 is connected with the reader-writer chip 2 through a receiving radio frequency line 23, and sends a return signal to the reader-writer chip 2; the ARM processor 6 is respectively connected with the reader-writer chip 2 and the upper computer 7.
Preferably, the radio frequency transmission line 21, the radio frequency power amplifier line 31, the radio frequency antenna line 41, the carrier cancellation line 22 and the radio frequency reception line 23 are all arc-shaped lines without folding corners, so that no attenuation of signals is ensured.
Preferably, the carrier wave is offset radio frequency line 22 and is "L" type with receiving radio frequency line 23, because PCB board reverse side paint piece need punch to the front, and the carrier wave is offset radio frequency line 22 and is received radio frequency line 23 and probably can touch the via hole and cause the short circuit, the utility model discloses an offset radio frequency line 22 with the carrier wave and receive radio frequency line 23 design for "L" type, can avoid touching the via hole of PCB board reverse side paint piece and cause the short circuit.
In this embodiment, the reader/writer chip 2 is an R2000 uhf reader/writer chip.
As shown in fig. 2, the signal transmission process of the present invention is as follows:
when receiving a signal, firstly, the antenna 5 directly transmits the received signal to the coupler 4; secondly, the coupler 4 transmits the signal to the PR9200 ultrahigh frequency reader-writer chip through the receiving radio frequency line 23, and because the carrier wave counteracting radio frequency line 22 is also arranged between the coupler 4 and the PR9200 ultrahigh frequency reader-writer chip, the interference to the signal can be prevented by utilizing the principle of wave counteracting; thirdly, the R2000 ultrahigh frequency reader-writer chip modulates the signal and transmits the signal to the ARM processor 6; and finally, the ARM processor 6 returns the received data to the upper computer 7 according to the instruction.
When a signal is transmitted, firstly, the upper computer 7 sends an instruction to the ARM processor 6; secondly, the ARM processor 6 transmits the transmitted signal to the PR9200 ultrahigh frequency reader-writer chip 2 according to the instruction; thirdly, the PR9200 ultrahigh frequency reader-writer chip 2 transmits the radio frequency signal to the radio frequency power amplifier 3 through the transmitting radio frequency line 21, and amplifies the originally small signal; thirdly, the radio frequency power amplifier 3 transmits the amplified signal to the coupler 4 through a power amplifier radio frequency line 31; finally, the coupler 4 transmits the signal to the antenna 5 for emission.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
The above exemplary description of the present invention is made in conjunction with the accompanying drawings, and it is obvious that the present invention is not limited by the above manner, and various improvements made by the method concept and technical solution of the present invention or by directly applying the concept and technical solution of the present invention to other occasions without improvement are all within the protection scope of the present invention.
Claims (9)
1. A UHF and UHF four-channel radio frequency reader-writer module comprises a PCB and is characterized in that a reader-writer chip, a radio frequency power amplifier, a coupler and an antenna are distributed on the PCB, the reader-writer chip is located on the right upper portion of the PCB, the radio frequency power amplifier is located in the left middle portion of the PCB, the coupler is located on the middle upper portion of the PCB, the coupler is located on the left upper portion of the reader-writer chip, and the antenna is located above the coupler.
2. The UHF four-channel rf reader module of claim 1, wherein the geometric center of the reader chip, the geometric center of the rf power amplifier, and the geometric center of the coupler are connected in pairs to form an isosceles triangle.
3. The UHF four-channel rf reader module of claim 2, wherein the geometric center of the reader chip, the geometric center of the rf power amplifier, and the geometric center of the coupler are connected in pairs to form an equilateral triangle.
4. The UHF four channel rf reader module of claim 1, wherein the reader chip is connected to the rf power amplifier via a transmit rf line, the rf power amplifier is connected to the first end of the coupler via a power amplifier rf line, the second end of the coupler is connected to the antenna via an antenna rf line, the third end of the coupler is connected to the reader chip via a carrier cancellation rf line, and the fourth end of the coupler is connected to the reader chip via a receive rf line.
5. The UHF quad channel RF reader module of claim 4, wherein the traces at the corners of the transmitting RF line, the power amplifier RF line, the antenna RF line, the carrier cancellation RF line and the receiving RF line are all arc traces.
6. The UHF quad-channel RF reader module of claim 5, wherein the carrier cancellation RF line and the receiving RF line are both L-shaped.
7. The UHF quad-channel RF reader module of claim 1, wherein an ARM processor is further disposed on the PCB, and the ARM processor is located at a middle lower portion of the PCB.
8. The UHF quad-channel RF reader module of claim 7, wherein the ARM processor is connected to the reader chip and the upper computer, respectively.
9. The UHF quad-channel rf reader module of claim 1, wherein the reader chip is an R2000 UHF reader chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021735145.3U CN212906331U (en) | 2020-08-18 | 2020-08-18 | UHF ultrahigh frequency four-channel radio frequency reader-writer module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021735145.3U CN212906331U (en) | 2020-08-18 | 2020-08-18 | UHF ultrahigh frequency four-channel radio frequency reader-writer module |
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| Publication Number | Publication Date |
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| CN212906331U true CN212906331U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021735145.3U Active CN212906331U (en) | 2020-08-18 | 2020-08-18 | UHF ultrahigh frequency four-channel radio frequency reader-writer module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276721A (en) * | 2022-02-22 | 2022-11-01 | 上海英内物联网科技股份有限公司 | RFID signal reading system based on signal compensation and amplification |
-
2020
- 2020-08-18 CN CN202021735145.3U patent/CN212906331U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115276721A (en) * | 2022-02-22 | 2022-11-01 | 上海英内物联网科技股份有限公司 | RFID signal reading system based on signal compensation and amplification |
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