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Hi,
Try to connect the other diode on the Gnd too. I think that if you leave disconnected maybe it causes problems.
The fact of capacitance changes according to frequency range is correct. But the results of second range (2.0Ghz to 2.8Ghz) is very strange. Try to put the same configurations as...
Dear all,
Sorry about the article. I read the "right and permissions" from Nature Physics and I discovered that is illegal. Therefore, I removed from my dropbox.
The link for to buy the article and to see some important informations, like the results graphics...
Dear KisuLom,
For check the varactor's model in ADS, you need to do a S-Parameters simulation. Do this: On S-Parameters config adjust your frequency range and on Parameters tab, select Y-parameters. On your terminal, put on "VDC" parameter one variable. So put one "Parameter Sweep" box and put...
My results until this moment are these. The graphic where S21 is equal to S31 represents the simulation without Vm (modulation signal). Comparing the other graphic with the other posted on previous message, it contains the result from article, my results are wrong.
The others figures shows my...
All this figures were removed from article. On schematic figure, the ports 1, 2 and 3 are for RF and Modulation signals. Ports 4, 5 and 6 are for DC source, for to polarize a varactor diode. Note on the figure it contains a experimental setup made for them, that RF and Modulation signals are...
The circuit is not passive. The Larmor precession, that is a phenomenon that explains circulation through the ports in only one way, in this case occurs because the varactor diode. This device when receive the signal modulated with a different phase in relation to other (inserted another port)...
S-parameters from a RF Circuit - Circulator created from LC resonators
Hello everyone.
I am trying to simulate, for my undergraduate thesis, a new RF circulator that was published by Nature Physics on article called "Magnetic-free non-reciprocity and isolation based on parametrically modulated...
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