How to evaluate GPS sensitivity of nRF9160 if using active antenna?

[Ngoc Nguyen]

Dear Devzone,

At the moment, We do not have methods to measure the GPS sensitivity of our products based on nRF9160.

We are using an active antenna with LNA gain 16dB, NF 1dB.

The Schematic for the GPS part is like below.

We apply a Simulated GPS signal directly to J4. And the minimum level where nRF9160 still could fix coordinates is -129dBm.

Could we use this result including test report of external LNA (from Antenna active) to infer the sensitivity of the device? If yes, how to infer?

Thank you and Best regards,

Ngoc Nguyen

[JONATHAN LL]

Hi Ngoc,


I will update you on the matter once i have any news.

Regards,
Jonathan

[Ngoc Nguyen]

Dear Jonathan,

Thanks for your support. Have you got any news yet?

Brs,

Ngoc Nguyen

[JONATHAN LL]

Hi, our expert on the topic is on varication so I don't have any news for you as of now, I will update once he is back. 

Sorry for the inconvenience. 

Regards,
Jonathan