caocao
Advanced Member level 4
![Full Member level 1](/styles/images/ranks/elevel1.gif)
HI
I want to design a dual frequency(1.9 and 2.2GHz ) and dual circularly polarized (two ports)antenna with microstrip patch ,could anyone give me any advices or papers ?
thanks
I want to design a dual frequency(1.9 and 2.2GHz ) and dual circularly polarized (two ports)antenna with microstrip patch ,could anyone give me any advices or papers ?
thanks