what structure for the ultrawide microstrip endfire antenna ranging 6GHz-18GHz

hello

I want to design ultrawide microstrip endfire antenna ranging 6GHz-18GHz.
but the qusi-yagi antenna and vivaldi antenna can not satisfy the requirment.

please, who can give me a best solution.

thank very much

hi
why vivaldi and qusi-yagi cant satisfy the requirment ?

I simulated quasi-yagi antenna used the substrate(relative permittivity 3.38, loss tangent 0.002) using HFSS11. the bandwidth is 9GHz-18.2GHz (S11<10dB).

If you interest in this antena. I send this antenna model to you .we can discuss it together.

Regards

---------- Post added at 11:30 ---------- Previous post was at 11:29 ----------

I simulated quasi-yagi antenna used the substrate(relative permittivity 3.38, loss tangent 0.002) using HFSS11. the bandwidth is 9GHz-18.2GHz (S11<10dB).

If you interest in this antena. I send this antenna model to you .we can discuss it together.

Regards

hi
if possible pls send it to my mail : ferdows_j@yahoo.com

Hello
I am interested in the qusi-yagi antenna with:
1- UWB 2 up to 18 GHZ
2- 30 deg beam width
3- and how to achieve dual polarization

zifoo_2000@live.com

If you can help me ..please