Hi. Every one.
I designed upconverter using iqmixer. a iqmixer is hmc526lc4 and i will change it to hmc520alc4.
Currently, i under testing but a few problem. So i want to find the answer hers.
My question is below as ;
1. Datasheet page 4 from HMC520LC4, RF level is -10dBm and LO is 15dBm. So What is the IF signal level?
2. Is it correct to calculate the level of I or Q signal with Channel power in the RF level budget of modulation system
using IQMIXER? or Is it correct to convert the channel power to CW?
3. On page 4 of the HMC526LC4 datasheet, LO to RF isolation is shown at 50 dB(frequency range : 7~8.5 GHz). However when I acturally measured it, LO to RF isolation is about 39dB. Is there a way to improve LO to RF isolation?