LimeSDR Mini v2.2 RF front-end switching to SMA connector

Projects LimeSDR
1

Question

When selecting RX LNA H / W as input to the Lime RFIC, does it also switch the Skyworks RF Switch to route H / W to the RX SMA connector? Does the API require one command to select H / W on the RFIC and set the RF Switch - does the FPGA take care of it?

Peter M0LNB

2

You didn’t say which board. Do you mean LimeSDR Mini v2.2? There are numerous different board types.

3

LimeSDR mini v2.2

Also, when is loopback used? Is it used for TX calibration?

Peter M0LNB

4

Thanks, just updated the topic title for clarity.

Lime Suite + gateware should take care of setting any switches when API call sets LNA port.

Loopback is used for transmit calibration.