CN201048364Y - Simple ultrahigh frequency reader-writer modulation circuit module - Google Patents

Simple ultrahigh frequency reader-writer modulation circuit module Download PDF

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Publication number
CN201048364Y
CN201048364Y CNU2007201545010U CN200720154501U CN201048364Y CN 201048364 Y CN201048364 Y CN 201048364Y CN U2007201545010 U CNU2007201545010 U CN U2007201545010U CN 200720154501 U CN200720154501 U CN 200720154501U CN 201048364 Y CN201048364 Y CN 201048364Y
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CN
China
Prior art keywords
power amplifier
radio
signal
ask
frequency power
Prior art date
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Expired - Fee Related
Application number
CNU2007201545010U
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Chinese (zh)
Inventor
孙尚传
李锋
严仍友
陈家林
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Shenzhen Tatfook Technology Co Ltd
Original Assignee
SHENZHEN SCBD NETWORK TECHNOLOGY Co Ltd
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Priority to CNU2007201545010U priority Critical patent/CN201048364Y/en
Application granted granted Critical
Publication of CN201048364Y publication Critical patent/CN201048364Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a simple UHF modulation circuit module for a reader which belongs to an ASK modulation circuit module. The module consists of the input end for LO signal100, the end for PWM power control signal107, the end for ASK signal109, the end for the output end 106 of RF signals and a power input pin 103. The PWM power control signal107 is connected with the power control end of an RF power amplifier 102. The ASK signal109 is connected with the ASK signal control end of the RF power amplifier 102. The LO signal100 is connected with the input end of the RF power amplifier 102. The output end of the RF power amplifier 102 is connected with the output end 106 of the RF signal. The module has an applicable band ranging between 860 MHz to 960 MHz and supports protocol labels of various types. The module is compatible with multiple international UHF standards such as EPC Class 1, EPC Class 1 Gen 2, IS 018000-6 PART B and so on. The utility model has simple circuit and low cost. And the utility model is applicable to various occasions such as logistics, ETC and so on.

Description

A kind of easy ultrahigh frequency reader-writer modulation circuit module
Technical field
This patent relates to a kind of easy ultrahigh frequency reader-writer modulation circuit module, is specifically related to fields such as frequency microwave technology, measuring technology, especially belongs to the radio RF recognition technology field.
Background technology
Radio frequency identification RFID is a kind of non-contacting automatic identification technology, brings deep variation to the human lives.But generally use at present the modulation circuit of read write line to have following defective: 1, circuit complexity is unfavorable for producing in batches; The cost costliness is difficult to be fit to the application of multiple occasion; 2, generally support single standard, be unfavorable for using widely; 3, transmitting power is not program-controlled.Therefore, this patent provides a kind of multi-protocols compatibility, read write line modulation circuit module with low cost.Can effectively be applicable to the different application of a plurality of occasions.
Summary of the invention
For solving existing above-mentioned defective, this patent provides a kind of easy ultrahigh frequency reader-writer modulation circuit module.This circuit module is made up of radio-frequency power amplifier, driver and PWM filter circuit.
A kind of easy ultrahigh frequency reader-writer modulation circuit module of this patent, this module bodies is a slice radio-frequency power amplifier, this radio-frequency power amplifier needs two power control ends, two by the control radio-frequency power amplifier enable to bring in realization ASK modulation, one termination pwm power control signal, the pwm power control signal is through the PWM filter circuit; Another termination ASK signal, the ASK signal needs the driving through two-stage, can realize the ASK modulation.
The transmitting power of this circuit module can be carried out program control adjusting by PWM.
The beneficial effect of this patent is that circuit is simple, and is with low cost, is easy to realize, easy to maintenance simple; This circuit module is fit to the application in various identifications field.
The characteristics of this patent:
1, circuit is simple, and is with low cost, is fit to the application of multiple occasion, is beneficial to batch process.
2, be applicable to the read write line of multi-protocols,, be beneficial to widely and use as EPC Class1, EPC Class1 Gen2 and ISO18000-6PART B.
3, power output can program controlly be regulated.
Description of drawings
Below in conjunction with drawings and Examples this patent is described further, in the accompanying drawing:
Fig. 1 is the systematic schematic diagram of this patent.Wherein: 100-local oscillator (LO) signal, 101-RF imports capacitance, 102-RF power amplifier, the 103-power module, the 104-power filtering capacitor, 105-RF imports capacitance, 106-RF signal output part, the 107-PWM output signal, the 108-PWM filter circuit, 109-ASK signal, 110-driver (inverter), E-Enable Pin 1 (power control end), F-Enable Pin 2 (ASK signal controlling end).
Embodiment
In the preferred embodiment of this patent,, be the systematic schematic diagram of this patent with reference to Fig. 1.Wherein: RF power amplifier 102, PWM filter circuit 108, driver 110 constitutes the modulation circuit module.The local oscillation signal 100 of 860MHz～960MHz is connected to the input of RF power amplifier 102 behind RF input capacitance 101; PWM output signal 107, power output control signal behind PWM filter circuit 108 inserts Enable Pin 1 (power control end) E; Behind the ASK signal process two-stage drive device 110, insert Enable Pin 2 (ASK signal controlling end) F, to realize the ASK modulation, the enable switch time that requires RF power amplifier 102 is 100ns.
The transmitting power of RF power amplifier 102 can be carried out program control adjusting by PWM output signal 107.
The power supply of RF power amplifier 102 need add power supply filter capacitor 104 at the input pin place that power module 103 enters RF power amplifier 102.

Claims (3)

1. easy ultrahigh frequency reader-writer modulation circuit module comprises: radio-frequency power amplifier, driver and PWM filter circuit constitute, and it is characterized in that:
This module comprises local oscillation signal (100) input, pwm power control signal (107) end, ASK signal (109) end, RF signal output part (106) end and power supply input pin (103);
Pwm power control signal (107) connects the power control end of radio-frequency power amplifier (102), ASK signal (109) is connected to the ASK signal controlling end that radio-frequency power amplifies (102), local oscillation signal (100) is connected to radio-frequency power amplifier (102) input, and radio-frequency power amplifier (102) output links to each other with RF signal output part (106).
2. a kind of easy ultrahigh frequency reader-writer modulation circuit module according to claim 1, it is characterized in that: wherein said radio-frequency power amplifier (102) input links to each other with local oscillation signal (100) by capacitance (101), and radio-frequency power amplifier (102) output links to each other with RF signal output part (106) by capacitance (105).
3. a kind of easy ultrahigh frequency reader-writer modulation circuit module according to claim 1, it is characterized in that: wherein said radio-frequency power amplifier (102) has two Enable Pins, the Enable Pin 1 of radio-frequency power amplifier (102) links to each other with pwm power control signal (107) through PWM filter circuit (108), and the Enable Pin 2 of radio-frequency power amplifier (102) links to each other with ASK signal (109) through the driving of two-stage.
CNU2007201545010U 2007-05-08 2007-05-08 Simple ultrahigh frequency reader-writer modulation circuit module Expired - Fee Related CN201048364Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201545010U CN201048364Y (en) 2007-05-08 2007-05-08 Simple ultrahigh frequency reader-writer modulation circuit module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201545010U CN201048364Y (en) 2007-05-08 2007-05-08 Simple ultrahigh frequency reader-writer modulation circuit module

Publications (1)

Publication Number Publication Date
CN201048364Y true CN201048364Y (en) 2008-04-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201545010U Expired - Fee Related CN201048364Y (en) 2007-05-08 2007-05-08 Simple ultrahigh frequency reader-writer modulation circuit module

Country Status (1)

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CN (1) CN201048364Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102258409A (en) * 2011-04-20 2011-11-30 上海交通大学 Wireless energy and data transmission system for visual prosthesis
CN101378262B (en) * 2008-09-17 2012-05-09 三维通信股份有限公司 Power amplifier protection device and method for UHF wide-band transmitter
CN101923654B (en) * 2009-06-09 2012-10-17 上海坤锐电子科技有限公司 Ultrahigh frequency reader-writer suitable for remote security control by different users

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101378262B (en) * 2008-09-17 2012-05-09 三维通信股份有限公司 Power amplifier protection device and method for UHF wide-band transmitter
CN101923654B (en) * 2009-06-09 2012-10-17 上海坤锐电子科技有限公司 Ultrahigh frequency reader-writer suitable for remote security control by different users
CN102258409A (en) * 2011-04-20 2011-11-30 上海交通大学 Wireless energy and data transmission system for visual prosthesis

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Tat Fook (Shenzhen) Technology Co., Ltd.

Assignor: Shenzhen SCBD Network Technology Co., Ltd.

Contract fulfillment period: 2008.10.27 to 2016.10.27

Contract record no.: 2008440000296

Denomination of utility model: Simple ultrahigh frequency reader-writer modulation circuit module

Granted publication date: 20080416

License type: Exclusive license

Record date: 20081029

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.27 TO 2016.10.27; CHANGE OF CONTRACT

Name of requester: DAFU( SHENZHEN ) SCIENCE CO., LTD.

Effective date: 20081029

C41 Transfer of patent application or patent right or utility model
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Effective date of registration: 20090227

Address after: Guangdong city of Shenzhen province Baoan District alqun Shiyan road with rich industrial area or plant, zip code: 518000

Patentee after: Tat Fook (Shenzhen) Technology Co., Ltd.

Address before: Three Guangdong Road, Futian District city of Shenzhen Province, No. 1006 Nord center 32B, zip code: 518026

Patentee before: Shenzhen SCBD Network Technology Co., Ltd.

ASS Succession or assignment of patent right

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Free format text: FORMER OWNER: SHENZHEN CITY PEITIAN NETWORK TECHNOLOGY CO., LTD.

Effective date: 20090227

C56 Change in the name or address of the patentee

Owner name: SHENZHEN TAT FOOK TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: DAFU (SHENZHEN) SCIENCE AND TECHNOLOGY CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 518000 Guangdong city of Shenzhen province Baoan District alqun Shiyan road with rich industrial area 1-2 building

Patentee after: Shenzhen Tat Fook Technology Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Baoan District alqun Shiyan road with rich industrial area 1-2 building

Patentee before: Shenzhen TatFook Technology Co., Ltd.

C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4

Patentee after: Shenzhen Tat Fook Technology Co., Ltd.

Address before: 518000 Guangdong city of Shenzhen province Baoan District alqun Shiyan road with rich industrial area 1-2 building

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080416

Termination date: 20140508