Forums - phone noise

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phone noise
lu.chihung
Join Date: 15 Dec 19
Posts: 4
Posted: Tue, 2020-06-23 02:36
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Hi Qualcomm my device use QCA9377 for Wifi ,and i test it when i input the 0dBm 1.9GHz signal to my device,then my device will stop operating. do you have ever seen the same issue?
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Re: phone noise
mayumano
Join Date: 4 Jan 18
Posts: 4
Posted: Mon, 2020-06-29 00:35
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Dear Customer,

We have not observed this before, can you please make sure that the reference schematics and layout recommneded guidelines have been followed for your design.

I have also check the Spur mitigation flags in Board Data File (BDF) but spur mitigation fields in BDF can only be used to mitigate inner chip spurs (whose source is form our chip). These fields cannot be used for mitigating externally sourced spurs/harmonics.

We can further look into it if you provide more details on this issue.

Thanks,

Mayuri Manohar

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Re: phone noise
lu.chihung
Join Date: 15 Dec 19
Posts: 4
Posted: Wed, 2020-07-01 17:10
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sorry for late reply.

does Qualcomm recommend to put a bandpass filter at RFE.

now i dont put the bandpass filter.

maybe this will cause the interference for outband noise.

 

thanks

 

 

 

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