Re: Lime Mini - HF


Brian Morrison
 

On Mon, 04 May 2020 16:18:21 -0700
"Onno PA0ONO" <onnosr@...> wrote:

I doubt that the attenuation comes from the SKY13411-374LF RFSW_Rx switch.
This switch is made for wifi rx tx switching. How should it blok frequencies < 30 mhz ?
See attached datasheet. The lower the frequency the less insertion loss. Why suddenly a big loss < 100 mhz ?
The return loss becomes very bad below 100MHz, where it is 4dB, so
even there about 40% of the power is being reflected and it gets worse
as the frequency drops.

--

Brian Morrison G8SEZ

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