Electronics > Beginners
Protection for GPS input
rakeshm55:
Hi,
How to protect Antenna input signals from ESD?
I have connected a low capacitance ESD diode. What is the standard mechanism used to protect GPS module (Sensitive to ESD) from ESD faults.
Yansi:
You have your answer on the schematic.
Other option is to use a diode clamp.
dmills:
A Quarter wave stub to ground should work and can be printed right onto the board.
regards, Dan.
radiolistener:
Here is typical solution to protect from overvoltage. In your case, you can use 1:1 RF transformer.
Yansi:
--- Quote from: dmills on May 11, 2019, 02:46:06 pm ---A Quarter wave stub to ground should work and can be printed right onto the board.
regards, Dan.
--- End quote ---
Will ruin impedance matching and will work likely only rather narrowband.
Also please keep in mind that GPS is like what... 1600MHz? The 1/4 wave stub will be unacceptably long for most applications on a PCB.
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