21cm interdigital filter equivalent schematic and SIM99 simulation, help needed
时间：04-04
整理：3721RD
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Some time ago I designed 21cm interdigital filter usin VK3UM app.
wa4dsy program also gave very similar out (for 0.1dB ripple).
However, when I build it, the best adjustment I could do is as per attached image.
../imgqa/eboard/Antenna/rf-40nnd2pnae1.jpg
../imgqa/eboard/Antenna/rf-jaide14eecc.jpg
I tried to understand which parameters should be manipulated to obtain the same result, so I tried RFSim99 simulation as below
../imgqa/eboard/Antenna/rf-guh4rhpwzch.jpg
Could someone tell me if this equivalent schematic is adequate?
wa4dsy program also gave very similar out (for 0.1dB ripple).
However, when I build it, the best adjustment I could do is as per attached image.
../imgqa/eboard/Antenna/rf-40nnd2pnae1.jpg
../imgqa/eboard/Antenna/rf-jaide14eecc.jpg
I tried to understand which parameters should be manipulated to obtain the same result, so I tried RFSim99 simulation as below
../imgqa/eboard/Antenna/rf-guh4rhpwzch.jpg
Could someone tell me if this equivalent schematic is adequate?