On 27/02/2025 09:31, Rob Kossler via USRP-users wrote:
If you are using timed commands and if you can verify that the
tx-to-rx synchronization is consistent every time, perhaps you could
measure the leakage signal (with attenuators connected to the RF
ports) and then simply subtract this signal from your over-the-air
measurements. This method of leakage cancellation can change over
time as the device heats up so you may need to periodically perform
this calibration.
Rob
On Thu, Feb 27, 2025 at 9:02 AM <[email protected]> wrote:
Hello,
I am working with a USRP E320. my main goal is to try to create a
two-channel FMCW radar. I have noticed a significant leakage of
the transmitted signal in the receive channel. the only gain level
that does not cause leakage is about 20 (the allowed max is 80)
while it is insufficient to register a reflection in my
configuration. Is there any way to mitigate this leakage?
double gainTX = 20;
double gainRX = 20;
radio_ctrl->set_rx_gain(gainRX, radio_chanRX);
radio_ctrl->set_tx_gain(gainTX, radio_chanTX);
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It would be useful to understand the antenna plumbing in this
scenario. Both TX/RX and RX2 ports in use? A circulator? Two
antennas?
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