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There is no need to be condescending. I am here because I am not an "expert" in RF design and am trying to learn. Calling something a disaster without providing constructive feedback is hardly helping. What makes you think I do not understand the concept of wavelengths? Do you think my CNC...
Alright, I have redone the PCB with all of the GND points connecting to the large piece of copper. I have also used BAT62 diodes instead of 1n5711 as they are officially rated for GHz and have even lower capacitance than 1n5711 diodes. Unfortunately, the circuit is now even LESS sensitive...
Can you please explain in a little more detail? That statement alone doesn't tell me much.
By ground plane I assume you mean something as described here under the "Microstrip" section.
I did remove the 50 ohm resistor by cutting the bottom lead with wire cutters. It is not obvious in the video. If the 4G transmission is continuous then why am I not able to pick it up with the antennas literally touching one another? If it works for 2.4Ghz RC transmitter, I don't see why it...
Obviously not big enough to stop a 2.4Ghz FlySky FS-HF030 RC transmitter. See video below. I do mention in the same post that I have tried a pair of BAT62 diodes that are advertised, in the datasheet, as "Low barrier diode for detectors up to GHz frequencies" and have capacitance of 0.35pF...
Thanks for the response guys!
Why would the diode be inappropriate for 2Ghz? It has 2pF junction capacitance. Plus, others seem to be using it successfully for fine tuning their 2.4Ghz RC transmitters. See link...
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...
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