Use Thingy:91 external matching circuit tuner

RE: Use Thingy:91 external matching circuit tuner

JONATHAN LL — Mon, 04 Jan 2021 15:07:10 GMT

Hi

Using the same matching circuitry will probably work but other component values might be needed to haw optimal performance. So some tuning might be needed.

[quote user="Navid"]I need to tune passive components?[/quote]

High probability of this being the case.

Regards,
Jonathan

RE: Use Thingy:91 external matching circuit tuner

Navid — Thu, 31 Dec 2020 16:01:23 GMT

Hi JONATHAN
Yes, I plan to use both LTE and GPS but I'm using a standalone antenna for GPS. The GPS antenna is ACAG0301-1575-T.
and unlike Thingy board, I don't connect GPS ANT to RF switch.
So, now can I use exactly the same matching circuit that has been used in Thingy board, with Molex 2067600001 antenna? or I need to tune passive components?

[quote userid="91187" url="~/f/nordic-q-a/69880/use-thingy-91-external-matching-circuit-tuner/287053#287053"]Have you read the nrf9160 Antenna and RF Interface guidelines?[/quote]

Yes, I have read it.

Regard.

RE: Use Thingy:91 external matching circuit tuner

JONATHAN LL — Thu, 31 Dec 2020 10:05:50 GMT

Hi Navid,

If your plan is to make a Thingy91 like device that preforms similar on both LTE and GPS i would not recommend using the Molex 2067600001. Reason being that it probably does not work well with GPS.

Do you plan to use GPS ?

[quote user="Navid"]an I use passive components with 0402 footprints for the matching circuit?[/quote]

Yes

Have you read the nrf9160 Antenna and RF Interface guidelines?

Regards,
Jonathan

RE: Use Thingy:91 external matching circuit tuner

Navid — Tue, 29 Dec 2020 14:30:40 GMT

yes. The antenna that you mentioned is used.

and I have another question, can I use passive components with 0402 footprints for the matching circuit?

Thanks for your response.

RE: Use Thingy:91 external matching circuit tuner

JONATHAN LL — Tue, 29 Dec 2020 10:10:40 GMT

Hi Navid,

Can confirm that it is this Molex Connector Part Number - 206760-0001 antenna or link to the antenna data sheet?

Regards,
Jonathan