quarter wavelength transformer with 1/8-wavelength shunt stub
[Z1,Z2] = qwt2(ZL,Z0)
impedance of main line
complex load impedance
impedance of 1/4-wavelength segment
impedance of stub (sign of Z2 determines 1/8, 3/8, shorted, opened)
qwt2 implements the design of quarter wavelength transformer with 1/8-wavelength shunt stub
add sample pgm