I am making an OQPSK signal using the HMC520ALC4 EVAL Board.
OQPSK is 320 Mbps and each I & Q channel data rate is 160 Mbps.
LO is +13 ~ + 14 dBm and I & Q is -10 dBm with channel power.
The problem is that LO leakage is higher than the modulated signal level when measured at the RF port of the IQMIXER.
The measurement results are attached. I do not know if the results are correct or if I am doing something wrong.
I wonder if there is a way to solve this problem.