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bare chip ground pad's purpose

Question asked by yckim on Jul 3, 2017
Latest reply on Jul 4, 2017 by yckim

Hello, guys~

 

I know bare chip as HMC-ALH476 or 382 that have signal and ground pads for wire bonding.

Exactly, ground pads are for measuring by prove. and almost your datasheet say using one wire(wedge or ribbon).

I'm using cavity PCB and microstrip line. Chip's bottom ground and microstrip line's ground are directly contacted.

 

So, do I have to wire chip's ground pads on top layer to PCB' ground pad on top layer? If I don't wire, does it have any problems?

 

Please let me know ASAP!!! 
Thank you!

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