4.7 Planar ultra wideband antennas

Matlab program

For an approximate design, parameters of a broadband antenna with a rectangular slots and U-shaped notch from the layer B are available here. The program runs in a command window by calling function

For the parameters of the function U_antena we substitute:

f_res2 the lower limit of the desired frequency range [Hz]

f_res3 central frequency in [Hz], $f_{res3}=f_{res2}+\frac{1}{2}\left(f_{res4}-f_{res2}\right)$

f_res4 the higher limit of desired frequency range [Hz]

ε_r desired permittivity substrate

T desired substrate thickness [mm]

Outputs are the approximate dimensions of the antenna with a rectangular slots and U-shaped notch as shown in figure 4.7B.1.