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AD9361 IQ filters bandwidth

Question asked by RFVS on Jan 26, 2018
Latest reply on Feb 2, 2018 by Vinod

Hello,

 

According to the bloc diagram, the RF channel bandwith range is 200kHz-56MHz, so the I and Q filters bandwidth range is 100kHz-28MHz.

According to the reference manual UG-570 p.9, the I and Q filters bandwidth range is 200kHz-28MHz, so the RF channel bandwdith range is 400kHz-56MHz.

According to the AD9361 Filter Guide p.5, the corner frequency range is 200kHz-39.2MHz. Considering that the corner frequency is typically calibrated to 1.4 times the baseband channel bandwidth, the I and Q filters bandwidth range is 143kHz-28MHz. So the RF channel bandwdith range is 286kHz-56MHz.

 

So, there is no doubt that the maximum RF channel bandwith is 56MHz.

But, what is the minimum RF channel bandwith? 200, 286 or 400kHz? Where are the errors?

 

Thank you in advance.

 

Best Regards,

 

Vincent

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