[问答]

ST25R3911B读取范围是多少？

242 DISCO

问答对人有帮助，内容完整，我也想知道答案 0 我购买了 ST25R3911B-Disco 板用于概念验证。我需要能够从 ~50 厘米的距离读取标签以进行识别。目前我有 ST25TA 标签，我可以从 ~3cm 读取它。我知道我需要购买带 NFC 类型 5 的标签 ST25TV。你能指导我如何让 ST25R3911B-Disco 远距离工作吗？我需要买什么样的标签？我需要更改寄存器映射中的设置以获得长距离吗？迪斯科能提供远距离读数吗？如果不是什么阅读器/评估板可以完成这项工作？ 0
2022-12-6 06:40:33　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 41 个回答。邀请回答 chm5 该类别下有 39 个回答。邀请回答 hgimtk 该类别下有 33 个回答。邀请回答 HengDu 该类别下有 30 个回答。邀请回答 hwp0415229 该类别下有 28 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答可口可甜该类别下有 26 个回答。邀请回答 kingnet6688 该类别下有 26 个回答。邀请回答颜刚YanG 该类别下有 26 个回答。邀请回答 zyh34997 该类别下有 25 个回答。邀请回答柱子图宁该类别下有 25 个回答。邀请回答 jenny042 该类别下有 25 个回答。邀请回答 kingnet9999 该类别下有 25 个回答。邀请回答 andyfly7 该类别下有 25 个回答。邀请回答麻酱该类别下有 25 个回答。邀请回答成长的小师弟该类别下有 24 个回答。邀请回答 gXDhn 该类别下有 24 个回答。邀请回答 jiangwenwen 该类别下有 24 个回答。邀请回答哼小曲该类别下有 24 个回答。邀请回答举报毛萃相关推荐 • ST25R3911B的天线输出端口阻抗是多少 2291 • 如何正确管理ST25R3911B？ 336 • 如何使用FreeRTOS连接ST25R3911B和STM32F072？ 292 • 请问ST25R3911B支持ISO15693编译器吗？ 2443 • ST25R3911B天线参数如何测量？ 384 • 请问有没有示例代码能将ST25R3911B置于透明模式？ 2046 • 请问使用ST25R3911B可以保证通讯距离超过50cm吗？ 2786 • RFID阅读器ST25R3911b和St25R3916b是否支持ECP Apple？ 372 • 如何从ST25R3911B开始，对于simpel项目真的有必要使用rfal和st25r3911库吗？ 491 • St25R3911B的SOF EOF没有响应 1447 1个回答

答案对人有帮助，有参考价值 0 Yes i am confident that this can be achieved. Likely due to the bad coupling between reader antenna and tag antenna additional circuitry (amplifier, filter) might be required. Internal receiver signals: You need to connect to P301 (CSO) and P302 (CSI) on the bottom side of the board. There is a footprint for UFL connectors foreseen where a UFL to BNC or SMA cable could be plugged. You can also directly solder a cable to the pads. To capture a good signal, i recommend to remove / cut the traces leading to the capacitive patches (they could pick up some field). You should then use a high impedance probe to feed the signals into the oscilloscope. Referring to chapter "1.2.15 Test access" of the datasheet DS11793 - Rev 5: By setting the registers as described in this section, you can e.g. output the analog signal of the AM channel and see how the digitizer decodes it. several other combinations are possible as mentioned in Table 13. Below you can see a Type A response showing: Yellow: H-Field Blue: Analog output of AM channel (before digitizer) Green: Digital output of AM channel (after digitizer) he screenshot shows a quite strong signal. After the first sub carrier pulses the AGC reduced the signal to a optimum level. You can now alter filter and gain settings and instantly see their impact.

2022-12-6 16:05:26 评论举报王丽婧