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I've read several research papers about full waveguide band MMIC tripler for W-band, recently. Such as 《A W-band GCPW MMIC Diode tripler》、《A Full Waveguide Band tripler for 75-110GHz》……
In these papers, the simple open-circuited stubs were used to present an approximate short-circuit at the...
I have got the large signal Spice model of a varactor diode (as shown in attachment), and I tried to simulate its typical capacitance versus bias voltage with ADS, but it seems different with the C_V curve shown in datasheet, I don't know what's wrong, can anyone help me? Thanks a lot!
Is there anyone who knows the small signal S parameter of MA46H146, which is a GaAs flip-chip multiplier varactor diode from MA-COM Cor. I appreciate your help!
This kind of structure (just as the attachment shows) is very interesting, but I wonder, how to simulate this with ADS (harmonic balance). In other words, how to dispose the tapered finline loaded with the diodes. Is there any tutorial for me ? thank you!
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According to a book about microwave and solid circuit I have read, the key structure of a varactor diode is its PN junction. When PN junction is reverse biased, we can make use of its potential barrier capacitance. In a word: a varactor diode is a PN junction device actually.
But I find another...
In electronics,we often met the two terms:active components & passive components.
Can anyone give me a clear definition about the two terms:active & passive?
Are they have some relationship to "linear" & "nonlinear"?
Is diode an ative component or passive component?
Thanks!
The software Cocafil and eseptum can be used to simulate and synthesis the waveguide filter. But I found the synthetical results cannot satisfy the desired performance using Cocafil, usually beyond far away. Maybe something wrong happened to my design procedure. If you are familiar with this...
I find that, in many design methods of frequency multipliers, the fundamental frequency was excited into the nonlinear devices through a lowpass filter, which can prohibit the undesired harmonic . I wonder why there's little people use the banpass filter here?
tekz, thank you for your replying.
1. according to the help document of HFSS, its background will be set to be PEC automatically. So since it's a waveguide, I think I can let the boundary empty.
2. I remenber that if the waveport was defined totally in the boundary, then a conducting...
Hello,everyone.
I want to design a W-band E-plane waveguide bandpass filter, I adopt HFSS and CST to analyze the filter with the same structure parameter, but the results show great difference, they are totally different.
The attachment is the projects of HFSS and CST.
Can anyone give me...
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