radial stub & radius of circle design in vivaldi doubt
时间：03-31
整理：3721RD
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i'm designing vivaldi antenna with centre frequency 3.3 Ghz (2GHz -4GHz) using CST.
Taper length of antenna is 90.9mm for 3.3 GHz.
Aperture width 48mm(ie; > 45.5mm).
Its having microstrip to slotline transition from 50 ohm to 100 ohm.
I am getting efficiency >100%(because gain is more than directivity). how to solve this to get b/w 90to 93% efficiency.?...
simulating freq range is 2GHz -4GHz. my radial stub height & radius of circle is to be lambda/4, but lambda is to be taken which frequency?.
plz reply me.
Taper length of antenna is 90.9mm for 3.3 GHz.
Aperture width 48mm(ie; > 45.5mm).
Its having microstrip to slotline transition from 50 ohm to 100 ohm.
I am getting efficiency >100%(because gain is more than directivity). how to solve this to get b/w 90to 93% efficiency.?...
simulating freq range is 2GHz -4GHz. my radial stub height & radius of circle is to be lambda/4, but lambda is to be taken which frequency?.
plz reply me.
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