alasulu
Newbie
First Image:
Second Image:
My 3D Vivaldi antenna design is shown in the first image above. I created the design by strictly following the geometric and electrical parameters described in a referenced article. The feeding structure of the antenna, which utilizes a coaxial feed, is displayed in the second image. The coaxial feed was designed with impedance matching in mind to ensure efficient power transfer.
However, the results I obtained are not as expected and seem to be problematic. Specifically, the S11 performance, shown in the third image below, indicates that the antenna is not achieving the desired wideband operation or proper return loss characteristics.
How can I address this issue and improve the antenna’s performance?
Third Image:
Second Image:
My 3D Vivaldi antenna design is shown in the first image above. I created the design by strictly following the geometric and electrical parameters described in a referenced article. The feeding structure of the antenna, which utilizes a coaxial feed, is displayed in the second image. The coaxial feed was designed with impedance matching in mind to ensure efficient power transfer.
However, the results I obtained are not as expected and seem to be problematic. Specifically, the S11 performance, shown in the third image below, indicates that the antenna is not achieving the desired wideband operation or proper return loss characteristics.
How can I address this issue and improve the antenna’s performance?
Third Image:
