QUESTION

Question

According to the datasheet  SR4L002  Average efficiency is about 60% at 868 mhz band.  so is it possible to achieve better efficiency with single band matching for the SR4L002 antenna for 868 mhz ISM band ?

We have the equipment and experience to design the matching circuit. However, I want to make sure whether this is possible during the design phase.

Answer 1

Hi Sir,

it may improve the efficiency with single band matching for 868MHz ISM band, but not be improved significantly due to the antenna efficiency for sub-GHz frequency is much relied on the PCB dimension (length).

For ISM band application, we have a solution Gatun - SR42I110, which has better efficiency at 868MHz.

Comments

Hi Raymong

we changed our design to SR4I052,   Gatun - SR42I110 seems a bit better but it is not available in global stocks.

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Hi Sir,

I believe the Gatun is available now.  let us check the stock internally.
How many quantity you need for your sample build?