Thingy91 LTE connector flylead?

RE: Thingy91 LTE connector flylead?

Kaja — Thu, 26 Nov 2020 15:42:25 GMT

Hi Mike,

the newest Thingy 91, 1.4.1 has an U.FL for GPS: https://no.mouser.com/ProductDetail/Taoglas/RECE-20279-001E-01?qs=WUa1z%2FNV9%252B3mVij1vDlP0A%3D%3D

But the 1.0.1 and 1.0.0 uses the same type both for the LTE and GPS: https://www.digikey.no/product-detail/no/murata-electronics/MM8130-2600RA2/490-4981-1-ND/1775925

Best regards,
Kaja

RE: Thingy91 LTE connector flylead?

mikcatta — Thu, 26 Nov 2020 09:25:52 GMT

Hi Kaja

I am really confused now. The user guide for the Thingy91 suggests that the GPS antennae is used for both GPS & LTE (see extract of user guide below).

"7.3.4 GPS The nRF9160 SiP has a dedicated GPS port to support global navigation, and the same antenna is used for both LTE and GPS"

It further states that the GPS connector is of type SWF also (MM8130-2600), but looking at my Thingy91, they appear to be different (7.3.4.1).

I don't want to plug in the wrong type of antenna into the Thingy91, and possibly cause it damage.

Is it correct that the GPS connector, is also used for LTE or is the documentation wrong or confusing in this point?

The Murata adaptor cables are hugely expensive, why were they selected ? Is this correct one ? www.digikey.co.uk/.../1775923

Regards

Mike

RE: Thingy91 LTE connector flylead?

Kaja — Thu, 26 Nov 2020 08:07:38 GMT

Hi Mike,

sorry I was thinking of the GPS connector on the newest thingy...

You are correct, SWF type:
"The connector is of SWF type (Murata part no. MM8130-2600) with an internal switch. An adapter is available (Murata part no. MXHS83QE3000) with a standard SMA connection on the other end for connecting instruments. The adapter is not included in the kit. The insertion loss in the adapter cable is approximately 0.5–1 dB."

Best regards,
Kaja

RE: Thingy91 LTE connector flylead?

mikcatta — Wed, 25 Nov 2020 14:32:38 GMT

https://infocenter.nordicsemi.com/pdf/Thingy91_UG_v1.4.pdf Pg 22

RE: Thingy91 LTE connector flylead?

mikcatta — Wed, 25 Nov 2020 14:18:09 GMT

Hi Kaja

Thank you for your reply. Please can you confirm that the LTE connector on the Thingy:91 is UFL?

Your documentation states otherwise (SWF type??).

Regards

Mike

RE: Thingy91 LTE connector flylead?

Kaja — Wed, 25 Nov 2020 14:10:06 GMT

Hi Mike,

if you search for a U.FL to SMA kable you will find some alternatives.

There are also some U.FL LTE antennas on the marked as well, or use a SMA LTE antenna and connect it to the SMA --> U.FL cable.

Best regards,
Kaja