M84AB3
Newbie level 5
Hi all,
I was hoping somebody can tell me why the below rf detector is not picking up any cellular phone signals? I am using through hole components and have soldered everything onto a CNC made PCB boards, keeping all tracks as short as possible (see image). I have no problem detecting 27Mhz, 40Mhz (wireless home phone), 466Mhz (walkie-talkie) but I am getting nothing from 2.4Ghz WiFi or 3G/4G frequency(s) even when holding the phone literally a few millimeters next to the antenna. I have ordered a high frequency, wideband LNA monolithic amplifier to try boosting the signal before rectification eventhough I think a cell phone transmitting at at least 1 watt when attempting to make a connection immediately next to the pickup antenna would not need a LNA pre-amp stage. Curious to hear some of you more experienced RF guys input!!!
I was hoping somebody can tell me why the below rf detector is not picking up any cellular phone signals? I am using through hole components and have soldered everything onto a CNC made PCB boards, keeping all tracks as short as possible (see image). I have no problem detecting 27Mhz, 40Mhz (wireless home phone), 466Mhz (walkie-talkie) but I am getting nothing from 2.4Ghz WiFi or 3G/4G frequency(s) even when holding the phone literally a few millimeters next to the antenna. I have ordered a high frequency, wideband LNA monolithic amplifier to try boosting the signal before rectification eventhough I think a cell phone transmitting at at least 1 watt when attempting to make a connection immediately next to the pickup antenna would not need a LNA pre-amp stage. Curious to hear some of you more experienced RF guys input!!!