A resistive load with greater than 30-dB return loss for a frequency band o
f de 90 GHz is presented, Frequency dependence of the load impedance is rem
oved by cancellation of the imaginary components of the impedance, Optimiza
tion of the load is achieved using commercial EM-based optimizers, Measurem
ents, using a modified multiline TRL calibration, show an excellent match w
ith EM simulations.