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Product #:ZB-UPH01   

 
Confidential  

Page 

7/14 

 
 

Doc. #: ZB-UPH01 Reference Note <Rev. 0.9>   

 

 

When RF module put on an application board(mother board), to minimize the RF signal 

interference, the best way is to define an isolation area. This area should have no any trace or 

grounding pad. Here are some layout suggestions for mother board. 

 

Suggestion 1: Place RF board aside mother board. (Let antenna part outside mother board is 

better) Make sure no trace and grounding pad under the must isolate area. Please see the drawing 

as below. 

 

Mother Board

Module Board

Must Isolate Area

Antenna

Prefer Isolate Area

Via

 

 

Suggestion 2: Place RF board at the corner of mother board. Make sure no trace and 

grounding pad under the must isolate area. Please see the drawing as below. 

 

Customer's Mother Board

RF Module Board

Must Isolate Area

Antenna

Prefer Isolate Area

Via