The role of radio circuits small white patch

solaoxo · September 18, 2015, 10:24am

If that, check a lot of information, I did not find. SMD red box what role, her brother know that you answer the next.
QQ截图20150918182314.png

normis · September 18, 2015, 10:54am

This is used by factory only, it has no use for end user.

solaoxo · September 18, 2015, 11:03am

I want to know what the two white patches are, capacitors, inductors, resistors, or simply make the connection with it.

CsXen · September 19, 2015, 6:39pm

Hi.
I think, in the red squared area you can see the impedance matching circuit for the PCB antenne.
With your resistance probe, you can guess the type of the white items. Low resistance → inductor… very high resistance → capacitor.

Regards: CsXen