2024年3月19日发(作者：乌雅月明)
Panasonic-NFCTAG天线设计指南
NFC TAG Antenna Design Guide
Version 1.20
Notice : All trademarks are the property of their respective owners. “ FeliCa " is a registered trademark of Sony Corporation.
" Nexus S “ and " Nexus " are registered trademarks of Google Inc.. " Galaxy " is a registered trademark of Samsung
Electronics Co., Ltd.. “ ELUGA ” is a registered trademark of Panasonic Corporation.
Contents
1. Introduction (3)
1.1 Purpose of this Guide (3)
2. Designing the Antenna (4)
2.1 Antenna Design Flow (4)
2.2 Determining the Size of Antenna [STEP 1] (5)
2.3 Determining the Specifications of Antenna [STEP 2] (5)
2.3.1 Measurement Results of Communication Distance (6)
2.4 Setting up the Antenna Board [STEP 3] (10)
2.4.1 Reference Example of Antenna Board (11)
2.5 Determining Resonant Capacitor Value [STEP 4] (12)
2.5.1 Measuring Antenna Equivalent Circuit Parameters [STEP 4-1] .. 13
2.5.2 Calculating Resonant Capacitor Value [STEP 4-2] (14)
2.5.2.1 Calculation Example of Resonant Capacitor Value (15)
2.5.3 Determining Proper Resonant Capacitor Value [STEP 4-3] (16)
2.6 Checking the Operation of NFC Tag [STEP 5] (17)
2.6.1 Measuring the Communication Distance (17)
2.6.2 Checking the Voltage of Antenna Pin (18)
3. Reference (19)
3.1 Antenna Class Based on ISO/IEC14443 (19)
3.2 Antenna Coil Specifications in NFC Forum (20)
3.3 How to Measure the Voltage of Antenna Pin (21)
4. Revision History (22)
1. Introduction
1.1 Purpose of this Guide
This guide provides how to design the antenna to be connected to the NFC tag LSI.
Figure 1 shows an outline of the system using an NFC (Near Field Communication) tag.
NFC Tag
Carrier Frequency: 13.56 MHz
R/W : Reader/Writer (smartphone, etc.)
Host : Host
RF I/F : RF interface
Control Logic : Control logic
Serial I/F : Serial interface
Figure 1Schematic NFC Tag Communication System
2. Designing the Antenna 2.1 Antenna Design Flow
Design the antenna for tag following the flow below.
2.2 Determining the Size of Antenna [STEP 1]
Determine the allowable antenna size, based on the specifications of NFC tag applications.
2024年3月19日发(作者：乌雅月明)
Panasonic-NFCTAG天线设计指南
NFC TAG Antenna Design Guide
Version 1.20
Notice : All trademarks are the property of their respective owners. “ FeliCa " is a registered trademark of Sony Corporation.
" Nexus S “ and " Nexus " are registered trademarks of Google Inc.. " Galaxy " is a registered trademark of Samsung
Electronics Co., Ltd.. “ ELUGA ” is a registered trademark of Panasonic Corporation.
Contents
1. Introduction (3)
1.1 Purpose of this Guide (3)
2. Designing the Antenna (4)
2.1 Antenna Design Flow (4)
2.2 Determining the Size of Antenna [STEP 1] (5)
2.3 Determining the Specifications of Antenna [STEP 2] (5)
2.3.1 Measurement Results of Communication Distance (6)
2.4 Setting up the Antenna Board [STEP 3] (10)
2.4.1 Reference Example of Antenna Board (11)
2.5 Determining Resonant Capacitor Value [STEP 4] (12)
2.5.1 Measuring Antenna Equivalent Circuit Parameters [STEP 4-1] .. 13
2.5.2 Calculating Resonant Capacitor Value [STEP 4-2] (14)
2.5.2.1 Calculation Example of Resonant Capacitor Value (15)
2.5.3 Determining Proper Resonant Capacitor Value [STEP 4-3] (16)
2.6 Checking the Operation of NFC Tag [STEP 5] (17)
2.6.1 Measuring the Communication Distance (17)
2.6.2 Checking the Voltage of Antenna Pin (18)
3. Reference (19)
3.1 Antenna Class Based on ISO/IEC14443 (19)
3.2 Antenna Coil Specifications in NFC Forum (20)
3.3 How to Measure the Voltage of Antenna Pin (21)
4. Revision History (22)
1. Introduction
1.1 Purpose of this Guide
This guide provides how to design the antenna to be connected to the NFC tag LSI.
Figure 1 shows an outline of the system using an NFC (Near Field Communication) tag.
NFC Tag
Carrier Frequency: 13.56 MHz
R/W : Reader/Writer (smartphone, etc.)
Host : Host
RF I/F : RF interface
Control Logic : Control logic
Serial I/F : Serial interface
Figure 1Schematic NFC Tag Communication System
2. Designing the Antenna 2.1 Antenna Design Flow
Design the antenna for tag following the flow below.
2.2 Determining the Size of Antenna [STEP 1]
Determine the allowable antenna size, based on the specifications of NFC tag applications.