aaron_do wrote on Nov 24th, 2013, 4:42pm:Hi,
based on your schematic, I can't see how you could get more than 90 degrees phase shift.
Aaron
Hi Aaron,
Actually I'm going to build two blocks of this, this one can get 0-90 degree with combining the phi_1 and phi_2, the other block combines phi_2 and phi_3 ---- can I design like this? I'm new to the phase shifter design, I'm so appreciated if you could give some advice, thank you!!
From the simulation, I noticed that in high frequency, the output nodes rise and fall very fast between non-zero and non-vdd voltage level. However, in 100 MHz, they are rising from 0 to VDD through some steps, and hardly to see the shift steps. Is this circuit right for low frequency application? Or there is some other techniques?
I'm still googling online, but still not be able to find a good solution. Thank you for your help!