vfurlan
Full Member level 2
Hi!
I designed a patch antenna with a center freq of 900MHz.
The calculated dimension are:
ε = 4.4 (fr4)
substrate high = 1.6 mm
w = 101.4 mm
L = 79.3 mm
and (2nd antenna)
W == L = 79.6 mm
But using hfss I can't get a decent S11 on 900MHz. I tried different patch dimensions, I changed L and W but it seem that at 900MHz Zin of the antenna is always less than 50ohm.
What am I doing wrong? What are the exact dimensions of a 900 Mhz patch antenna?
Any thoughts would be highly appreciated.
I designed a patch antenna with a center freq of 900MHz.
The calculated dimension are:
ε = 4.4 (fr4)
substrate high = 1.6 mm
w = 101.4 mm
L = 79.3 mm
and (2nd antenna)
W == L = 79.6 mm
But using hfss I can't get a decent S11 on 900MHz. I tried different patch dimensions, I changed L and W but it seem that at 900MHz Zin of the antenna is always less than 50ohm.
What am I doing wrong? What are the exact dimensions of a 900 Mhz patch antenna?
Any thoughts would be highly appreciated.