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Hi everyone,
I have a question about how to simulate a balun in HFSS. If I want to know the amplitude and phase characters between the balun's two output arms,such as the wideband Chybeshev transformer, as the fig.How to model and solve it in HFSS?
Thanks and Regards!
CaoCao
Hi fishyxl
I think the hfss is more accurate in calculation S parameters in waveguide structure . When I simulation an antenna , I can get accurate pattern in HFSS and CST-MWO ,but in calculating S parameters ,HFSS is better than CST .
Regards!
caocao
JIan ,Thanks for you advices
Maybe I can calculate the current distribution from the optimization and the null position. It the best method I think.
Regards ! caocao
Hi every one
I have a quesition about antenna pattern synthesis . If we have the surface current amplitude and phase distribution of an antenna,we can get the far pattern.Put the other way round , how can we obtain the surface current distritution (amplitude and phase )according to the far...
Hi
You can study this book 'field theory of guide wave 'Collins .There are methods in solving uncontinued quesiton.
I think the best method is Mode Match ,you should expand the mode in the waveguide.
Best Regards !
caocao
Hi everyone,
There is a question in Archimedean spiral antenna.I want to enhance gain of the antenna,a cavity was added on the back of the spiral and about 1/4 labuta from it.I had simulated the antenna in hfss and found that the axial ratio of the antenna increased too(from 1 dB to 7dB):cry:.I...
Hi dch316,
About the measurement of circulary polarised antennas in anechoic chamber such as Compact Range, if u only measure the AR on some angle, you can choose the polarization of the linear source (H or V) and tune the antenna to the angle, circumgyrate it along its axial! If the pattern is...
Thanks for vfone's papers:D
On the other hand,should we design a circularly polarized antenna works from 1.2~2.4GHz with two layer and patch were stacked?
Regards!
Hi every one,
I have to face questions in designing a wideband (from 1.2 to 2.4GHz) circularly polarized planar antenna with small size (a 4X4 square inch area).I had thought about for a few days but have no ideas:(
Would someone give me some advices or papers on it?
Thanks...
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