CN202586903U - Modulation circuit for controlling passive ultrahigh frequency equipment - Google Patents
Modulation circuit for controlling passive ultrahigh frequency equipment Download PDFInfo
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- CN202586903U CN202586903U CN 201220201609 CN201220201609U CN202586903U CN 202586903 U CN202586903 U CN 202586903U CN 201220201609 CN201220201609 CN 201220201609 CN 201220201609 U CN201220201609 U CN 201220201609U CN 202586903 U CN202586903 U CN 202586903U
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- module
- power amplifier
- modulation circuit
- ultrahigh frequency
- vco
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Abstract
A modulation circuit for controlling passive ultrahigh frequency equipment relates to the technical field of passive ultrahigh frequency RFID (Radio Frequency Identification) card reader equipment and consists of a VCO (Voltage Controlled Oscillator) module (1), a power amplifier (2) and an MCU (Micro Controller Unit) module (3), wherein the VCO module (1) is connected with the power amplifier (2) and the MCU module (3); and the power amplifier (2) is connected with the MCU module (3). According to the modulation circuit, a circuit structure becomes simple, the debugging and the production are better facilitated, a signal is stronger, the production cost is reduced and the performance of the card reader is more stable.
Description
Technical field:
The utility model relates to passive ultra-high frequency RFID reader device technical field, relates in particular to a kind of control UHF-RFID passive ultra-high frequency (860M-960M) equipment modulation circuit.
Background technology:
At present; The modulation circuit of passive ultra-high frequency RFID card reader mainly is to carry out ISO18000-6B with the radiofrequency signal of a hyperfrequency switch chip control VCO voltage controlled oscillator; The modulation of ISO18000-6C no source protocols such as (EPC GEN2), this mode can make the circuit more complicated, the modulation trouble; Increase the decay of high-frequency signal, increased cost and failure rate.
The utility model content:
The purpose of the utility model provides control passive ultra-high frequency equipment modulation circuit, and it makes circuit structure become simply, more can be convenient to debugging and production, and signal is stronger, and production cost reduces, and the card reader performance is more stable.
In order to solve the existing problem of background technology, the utility model is to adopt following technical scheme: it is made up of VCO module 1, power amplifier 2, MCU module 3; VCO module 1 is connected with power amplifier 2, and VCO module 1 is connected with MCU module 3, and power amplifier 2 is connected with MCU module 3.
Be provided with frequency diverter switch 2-1 in the described power amplifier 2, replaced the hyperfrequency switch chip to modulate ISO18000-6B, the modulation signal of ISO18000-6C no source protocols such as (EPC GEN2).
The utility model makes circuit structure become simply, more can be convenient to debugging and production, and signal is stronger, and production cost reduces, and the card reader performance is more stable.
Description of drawings:
Fig. 1 is the structural representation of control passive ultra-high frequency equipment modulation circuit in the background technology;
Fig. 2 is the structural representation of the utility model.
Embodiment:
With reference to Fig. 1, Fig. 2, this embodiment adopts following technical scheme: it is made up of VCO module 1, power amplifier 2, MCU module 3; VCO module 1 is connected with power amplifier 2, and VCO module 1 is connected with MCU module 3, and power amplifier 2 is connected with MCU module 3.
Be provided with frequency diverter switch 2-1 in the described power amplifier 2, replaced the hyperfrequency switch chip to modulate ISO18000-6B, the modulation signal of ISO18000-6C no source protocols such as (EPC GEN2).
This embodiment makes circuit structure become simply, more can be convenient to debugging and production, and signal is stronger, and production cost reduces, and the card reader performance is more stable.
Claims (1)
1. control passive ultra-high frequency equipment modulation circuit is characterized in that it is made up of VCO module (1), power amplifier (2), MCU module (3); VCO module (1) is connected with power amplifier (2), and VCO module (1) is connected with MCU module (3), and power amplifier (2) is connected with MCU module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220201609 CN202586903U (en) | 2012-05-08 | 2012-05-08 | Modulation circuit for controlling passive ultrahigh frequency equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220201609 CN202586903U (en) | 2012-05-08 | 2012-05-08 | Modulation circuit for controlling passive ultrahigh frequency equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586903U true CN202586903U (en) | 2012-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220201609 Expired - Fee Related CN202586903U (en) | 2012-05-08 | 2012-05-08 | Modulation circuit for controlling passive ultrahigh frequency equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245226A (en) * | 2015-11-13 | 2016-01-13 | 成都前锋电子仪器有限责任公司 | Dot frequency generation circuit for radio-frequency local oscillation circuit of radio integrated measurement instrument |
| CN106557719A (en) * | 2016-12-07 | 2017-04-05 | 天津洽克印科技发展有限公司 | Control hyperfrequency equipment modulation circuit |
-
2012
- 2012-05-08 CN CN 201220201609 patent/CN202586903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245226A (en) * | 2015-11-13 | 2016-01-13 | 成都前锋电子仪器有限责任公司 | Dot frequency generation circuit for radio-frequency local oscillation circuit of radio integrated measurement instrument |
| CN106557719A (en) * | 2016-12-07 | 2017-04-05 | 天津洽克印科技发展有限公司 | Control hyperfrequency equipment modulation circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130508 |