huytergan
Member level 3
I designed and simulated a clover shaped cross dipole antenna with two port. (Two coaxial cable- 50 Ohms)
Design is like I provided below. I'm actually getting a good return loss within a relatively broadband frequency range.
But when I deactivated one of the ports to see Z matrix, real and imaginary part oscillate like this I provided below. And I wanna ask if I need a matching circuit although I have the bandwidth I desired when two coax used simultaneously.
Also info: I see many design research papers like that, they use two ports for the aim of circular polarization, but they never mention about a matching circuit. Is structural design enough to match impedance in this case?
Design is like I provided below. I'm actually getting a good return loss within a relatively broadband frequency range.
But when I deactivated one of the ports to see Z matrix, real and imaginary part oscillate like this I provided below. And I wanna ask if I need a matching circuit although I have the bandwidth I desired when two coax used simultaneously.
Also info: I see many design research papers like that, they use two ports for the aim of circular polarization, but they never mention about a matching circuit. Is structural design enough to match impedance in this case?