天线设计的这个图中的Excelsheet也是一个工具嘛,可以提供一下这个工具出处嘛?
Hello sir,
This is Fabian from customer support.
In order for me to provide further support please specify which reader are you using. There is an Excel for each Reader.
lease check our Antenna Design tool for a starting point on the components of your matching circuit. Please keep in mind that these aren't the final values. The actual values will have to be calculated based on the physical reading of your antenna using a VNA.
For further information, I highly recommend to please take a look at the following video series: https://www.nxp.com/design/training/nfc-antenna-design:TIP-NFC-ANTENNA-DESIGN
Accoridng to the NFC Antenna tool, please share your matching values once you have calculated them based on your antenna PCB design.
Please let me know if this information may have been useful.
使用的读卡器是PN7462,可以提供PN7462的ExcelSheet嘛,我现有线圈测得La和Ra的值,如何通过测得的la和Ra的值以及要求的Q值和阻抗值计算出④中的值,①中的公式是计算什么的,麻烦告知一下
Hello, my name is Fabian, I've been assigned to support your case.
Thank you for your interest in our products
Since it is a quite old file we don't have it as part of our product support page.
Please find the excel file in the following community thread: https://community.nxp.com/t5/NFC/PN7462-Antenna-Matching-Excelsheet/m-p/1075658
The file is attached as the zip file name: 149110.zip