two-section dual-band transformer bandwidths
[f1L,f1R,f2L,f2R] = dualbw(Z0,ZL,r,GB);
main line impedance
load impedance (real-valued)
harmonic number (arbitrary real number, r>1)
reflection-coefficient bandwidth level
left and right bandwidth edge frequencies about f1 (in units of f1)
left and right bandwidth edge frequencies about f2 (in units of f1)
dualbw(Z0,ZL,r,GB) computes two-section dual-band transformer bandwidths. f1L and f2R lie symmetrically about f0, i.e., f1L + f2R = 2f0. f1R and f2L lie symmetrically about f0, i.e., f1R + f2L = 2f0. SWR over the bandwidth is SB = (1+GB)/(1-GB) => GB = (SB-1)/(SB+1)
add sample pgm
This function uses the functions z2g.