如何测量或确定这些参数的正确值

你好


我想建立一个阅读器，使用CR95HF收发器IC与ISO14443A和ISO15693标签进行通信。我构建了一个2转PCB天线，并根据AN4327和excel工具计算了PCB天线的匹配。

使用VPS_TX = 3,3V，我的性能与PLUG_CR95HF演示板相同。

我还尝试将天线与VPS_TX = 5V（假设更好的读取范围）匹配，并且通过这种设置，可以在更远的距离上为标签供电，但是我无法与标签通信（接收）。通过调整定时器窗口和接收器增益（5.8.1和5.8.2 CR95HF数据表），我得到的改进很小。但确定这些价值观的唯一方法就是 try和see 。

所以我的问题是如何测量或确定这些参数的正确值。

最好的祝福
马尔科
＃cr95hf＃cr95hf＃5v



以下为原文





Hello

  
I want to build a reader to communicate with ISO14443A and ISO15693 tags using the CR95HF transceiver IC. I build a 2 turn PCB antenna and calculated the matching of the PCB antenna according to AN4327 and the excel tool.
  
With VPS_TX = 3,3V I get performance equal to the PLUG_CR95HF demo board.
  
I tried also to match the antenna for VPS_TX = 5V (assuming better read range) and with this setup it is possible to power tags over a greater distance but I cannot communicate (receive) with the tags. I get little improvement by tweaking the timer Window and Receiver Gain (5.8.1 and 5.8.2 CR95HF datasheet). But the only way to determine these values I found was �try and see�.
  
So my question is how to measure or determine the right values for these parameters.
  
With best regards
Marco  
#cr95hf #cr95hf #5v