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Shield Analog and DIgital grounds

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brmadhukar

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Hi All,
This is with respect to a GPS receiver design. I feel that the analog and digital ground should be separted at a single point either athe source of supply or wherever possible. And
The shield for the RF should be connected to digital ground
The Antenna should be separated from the shield and should be analog GND

Is this the standard way?
How do we take care of lightning?

TIA
 

MonkeyBusiness

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Assuming the radio is connected to analog ground, the radio shield will typically be connected to analog ground as well. Take care to assure that no current can flow through the shield.
Lightning is usually taken care of by lightning arrestors or spark gaps, which are cheaper but less reliable.
 

smanish

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Grounding reference

There is a attachment, which may help u.

ms
 

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