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Is there anyone can share the experience of design antenna using HFSS? Do you inspect the E field or surface J or H field distribution before you decide next slot position? what is the rule to decide the right position?
Everyone knows that it's very hard to get good performance if only cut...
the efficiency value in HFSS seems not right, I usually got very high efficiency, sometimes even higher than 1, I have no idea why it happens. Did anyone come accross similar problem?
It's really hard to measure the PA output impedance in active state, because you can never know what it would be like in the real network. And if tested in passive state, it makes nonsense.
For GSM/DCS band matching design, if your DCS center frequency not changed much, maybe you can choose...
phase ditortion channel+matlab
I am sorry to tell you。
I don't think you are right.
because it is very not accurent, you must know randn() is not very stable.
I suggest that you should look at the papers of Clark,Jakes, and C.xiao.
there are three ways to model Rayleight channel, which are...
I'm trying to build a match network from an antenna to a switch whose impedance is 50Ohm. To realize that, I first got the return loss values of the antenna in the whole frequency band, namely from 800M to 900MHz. Then I import the data into a port in ANSOFT designer. Then, I choose the center...
The problem is, how can I make the antenna have the desired input impedance? Or express it in another way, how can I know the input impedance of a designed antenna in the simunilation?
I build a low pass filter in ansoft designer, but when I try to analyze the circuit, an error message like below showed up:
Error: no circuit elements to analyze.
There are several circuit elements in the circuit model, like capacitors, inductors, transmission lines, microstrip Tees and...
:?: I want to design a matching circuit between an antenna and a filter, can HFSS realize this function?
Did anyone ever do this kind of work in HFSS? Please help me with this, thanks a lot!!
Re: Antenna Help
I think the antenna size should be at the same lever as a quarter of its working wavelength.
I think it will better if you give your specifications for the antenna parameters, like S parameters and voltage standing wave ratio.
Re: Antenna Help
I think the antenna size should be at the same lever as a quarter of its working wavelength.
I think it will better if you give your specifications for the antenna parameters, like S parameters and voltage standing wave ratio.
Re: virtual object and boundary conditions at modelling ante
I use only radiation boundary in my simulation of antenna, but I'm not sure it is right or not. Because I got error efficiency value but the VSWR and return loss value is close to the real model. Maybe a virtual object will help to...
hfss pcb modeling
I want to simulate a patch antenna through HFSS. Do I need to specificate the material of the PCB board which the antenna is attached to? Or I only need to make a 2D model and set the PCB board as condutive boundary?
I don't quite understand your meaning of "seeding the radiation boundry " Do you mean set the radiation boundry far enough to the antenna structure ? The distance between the boundry and the antenna structure is set to above 0.25 wavelength. But I got an even worse result, the efficiency goes...
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