neazoi
Advanced Member level 6
Hi, I want to monitor the phase and level of two signals. Actually there is one VFO which is split in two signals using a splitter, so the frequency is the same. Then one of the two signals is phase shifted using a PI LC network.
To be able to set accurate 90 degrees phase and same level to the signals, I am thinking of doing this:
Connect a combiner at the two signals ports and a diode detector at the combined port. If the two signals are 180deg out of phase, minimum voltage will output the detector. If they are in phase, there will be double voltage and if they are 90 degrees out of phase (the desired thing) there will be a certain voltage.
For the power monitor it is easy to be done by a diode detector at each of the two ports prior to the combiner.
Will this work?
To be able to set accurate 90 degrees phase and same level to the signals, I am thinking of doing this:
Connect a combiner at the two signals ports and a diode detector at the combined port. If the two signals are 180deg out of phase, minimum voltage will output the detector. If they are in phase, there will be double voltage and if they are 90 degrees out of phase (the desired thing) there will be a certain voltage.
For the power monitor it is easy to be done by a diode detector at each of the two ports prior to the combiner.
Will this work?