NFC Antenna Design, Adjustment of Resonant Frequency, Sensor Network Module
93 Chudoji-awatacho Shimogyo-ku Kyoto 600-8815, Japan
Kyoto Research Park Bldg.#4 5F
Phone : +81-75-874-5597
RF Innovation Co., Ltd.
NFC Antenna Designer -Demo Ver. 0.1-
It is possible to design the antenna of NFC tags, RFID tags, Contactless IC cards
(ISO14443, ISO15693) easily and fast using "NFC Antenna Designer".
"NFC Antenna Designer -Demo Ver. 0.1-" is the demonstration (sample) version
of the NFC Antenna Designer.
You can simulate the following communication distance by inputting the antenna shape parameters.
◇Communication distance
(setting x, y coordinate)
◇Communication distance
dependence of the antenna shape
parameters
◇Communication distance
dependence of the resonant
capacitance
◇Communication Area
You can analysis the following characteristics by inputting the tolerance of the antenna pattern
and the tolerance of the resonant capacitance (chip capacitance).
◇Worst communication distance
◇Worst communication area
Communication Distance Simulation NFC Antenna Designer -Demo Ver. 0.1-
It is simulated on the following typical conditions.
(1) Antenna shape parameters (Size a, b, Width w,
Gap g, Thickness t, Number of turns N)
(2) External resonant capacitance (Cr [pF])
(3) Current consumption of the NFC-LSI （Idd [mA]）
(4) Input capacitance of the antenna terminals of
the NFC-LSI（Cin [pF]）
[ Simulation Results ]
1. Inductance L(typ.) [uH] of the inputting antenna
shape parameters
2. Resonant capacitance Cr [pF]
3. Communication distance (Setting x, y coordinate)
4. Communication distance dependence of the antenna shape parameters
5. Communication area （z-y Plot, z-x Plot, y-x Plot）
< Setting and Inputting >
① Selecting Function (Demon Ver. 0.1)
(1) Communication distance(typical)
(2)Worst communication distance
② Setting the NFC tag LSI and the Reader/Writer
③ Inputting the antenna shape parameters of the NFC tag LSI
You can simulate ten kinds of rectangular antennas at the same time.
④ Simulation start
⑤ Selecting the antenna number to display in the antenna image area
< Simulation Results >
⑥Inductance
⑦External resonant capacitance
Check : Automatically setting
Uncheck : Manually setting (It is possible to rewrite the capacitance value.)
(You cannot use it in the Demo Ver.0.1.)
⑧Communication distance
< Displaying >
⑨ Explanation Signs
・Input capacitance of the NFC tag LSI
・External resonant capacitance
・Antenna shape parameters
You can simulate communication distance for ten kinds of rectangular antennas at the same time.
You can also set a center coordinate in the NFC tag antenna in this simulation.
⑩ Setting a center coordinate of
the NFC tag antenna
⑪ Displaying the image of
the NFC tag antenna and
the Reader/Writer antenna
⑫ Displaying the communication
distance for each NFC tag antenna
The results are displayed as soon as you set the NFC tag LSI, the Reader/Writer, input the antenna shape parameters
,or (x, y) coordinate.
You can simulate the dependence for the communication distance about the following terms.
⑬ Number of turns : N [turn(s)]
(Displaying the results for the
checked antenna in ⑤)
⑭ Communication distance
dependence of the resonant
capacitance variation rate :
ΔCr [%]
⑮ Antenna shape parameters
(1) Length of the x-axis direction ： a [mm]
(2) Length of the y-axis direction ： b [mm]
(3) Width of the antenna pattern ： w [mm]
(4) Gap of the antenna pattern ： g [mm]
(5) Thickness of the antenna pattern： t [um]
⑯ Displaying the image of the NFC
tag antenna and the
Reader/Writer antenna
Displaying the communication area of the NFC tag in the following graphs
⑰ z-y Plot
⑱ z-x Plot
⑲ y-x Plot
Illustrating the communication area at a half of the maximum communication distance in the y-x Plot
Worst Communication Distance Simulation NFC Antenna Designer -Demo Ver. 0.1-
The conditions of the worst communication distance simulation are as follows;
(1) Tolerance of the antenna shape parameters
（±Δw [mm], ±Δt [um]）
(2) Tolerance of the external resonant
capacitance（±ΔCr [%]）
(3) Maximum consumption current of the NFC tag
LSI（Idd_max [mA]）
(4) Tolerance of the input capacitance of
the antenna terminals in the NFC tag LSI
（±ΔCin [pF]）
[ Simulation Results ]
1. Inductance L(min./typ./max.) [uH] of the inputted
antenna shape parameters
2. Resonant capacitance : Cr [pF]
3. Worst communication distance : z [mm]
4. Communication distance dependence of
the resonant capacitance variation rate : Cr [%]
5. Communication area of the typical condition and
the worst condition（z-y Plot, z-x Plot, y-x Plot）
< Setting and Inputting >
① Selecting Function (Demo Ver. 0.1)
(1) Communication distance(typical)
(2)Worst communication distance
② Setting the NFC tag LSI and the Reader/Writer
③ Inputting the antenna shape parameters of the NFC tag LSI
You can simulate ten kinds of rectangular antennas at the same time.
④ Inputting the tolerance of PCB
⑤ Inputting the tolerance of the resonant capacitance (Chip capacitance) [%]
⑥ Simulation start
⑦ Selecting the antenna number to display in the antenna image area
< Simulation Results >
⑧Inductance (min. / typ. / max.)
⑨External resonant capacitance
⑩ Worst communication distance
< Displaying >
⑪ Explanation Signs
・Input capacitance of the NFC tag LSI
・External resonant capacitance
・Antenna shape parameters
Product List
| Product No. | Product name | Function | State |
|---|---|---|---|
| RSIM-A001 | NFC Antenna Designer |
It is possible to design an antenna suitable for the NFC tag LSI using this simulator. |
under development |
| RSIM-A002 | NFC Antenna Designer - Worst communication distance simulator- |
It is possible to calculate the worst communication distance caused by the tolerance of the antenna pattern and resonant capacitor. | under development |
< Under investigation >
a) Design of Reader/Writer antenna
b) Communication distance when external load was connected
c) Analysis of dead zone in communication area
Characteristics Data of NFC tag LSI and Reader/Writer
| Product No. | Tag LSI | Company | Status |
|---|---|---|---|
| RTDATA-B001 | M24SR02-YDW6T/2 | STMicroelectronics | under development |
| NT3H1201W0FTTJ | NXP | ||
| RF430CL330HCPWR | TI | ||
| MN63Y1208E | Panasonic |
| Product No. | Reader/Writer | Company | State |
|---|---|---|---|
| RWDATA-C001 | SCR331CL-NTTCom | NTTCommunications | under development |
Contact us
Inquiries about the demo-sample and the product
support@rf-innovation.co.jp