We plan to use the LIMESDR-USB for Radio Astronomy and therefore need only the RX part of the board. We want to modify the board for better performance (making it less noisier). Can you suggest if they will work?
We plan to do the following modifications:
- Removing the components on the Receive side (Transformers Caps, Resistor on 3 Inputs).
- Removing the SPDT switch used for TX RX calibrations.
- Removing the DDR2 IC’s and its Power supplies.(Not sure if this will harm the FPGA itself)
- Removing the 0 ohm resistor at the output of the LMK00105 IC used for generating the TxPLL_CLK.
External precautions are:
Use a Linear Power Supply to feed the external power Input, don’t use the USB supply.
Recommendations are needed for the best Input Voltage, 6,9,12V ? (the one that generates the least EMI as there are switching power supplies at the input stage)
Thank you very much in advance…