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LO leakage AD9361

Question asked by rizais on Apr 4, 2017
Latest reply on Apr 4, 2017 by Vinod


I would like to ask for some hints regarding LO leakage.

The platform am working on is zc706/fmcomms5.In whish am trying to suppress the LO leakage.

I have build a transceiver using gnu-radio that receives in 305 mHz and transmits at 255 mHz.

So far I have been flipping the bits in registers accessed by iio-osciloscope (debug tab).

 More particular, I have accessed SPI Register 0x091—Tx2 Out 1 Gain Corr, SPI Register 0x092—Tx1 Out 1 Offset , SPI Register 0x09F—Force Bits.

The only difference I saw is only by changing 0x09F bit 2 that would only “amplify” the LO’s leakage.

Could someone please let me know how to further suppress it?

Is there any other way to do that?

I can also provide GNU’s initialization files.

Best Regards