nightorc
Junior Member level 1
VGA help
I am trying to build a single-channel transmitter of a medical system and later extend to multi-channel. I tried to use vector modulator and VGA to make it work. But the problem is the control of the VGA. I am not familiar with the digital interface (if I am using a digital variable gain amp). The freq is 200MHz. Thanks in advance. I want to arbitrarily control amplitude and phase in each channel. Any suggestions?
I am trying to build a single-channel transmitter of a medical system and later extend to multi-channel. I tried to use vector modulator and VGA to make it work. But the problem is the control of the VGA. I am not familiar with the digital interface (if I am using a digital variable gain amp). The freq is 200MHz. Thanks in advance. I want to arbitrarily control amplitude and phase in each channel. Any suggestions?
