Design of an L-Band Cross-Dipole Phased Array Feed for FAST

Figure 9

Scattering and impedance characteristic. (a) Modeled and measured reflection coefficients of the antenna. (b) Scattering matrix of the array. (c) Real part of the impedance matrix. (d) Imaginary part of the impedance matrix.

(a)

(b)

(c)

(d)