FD-TD analysis of planar millimetric circuits

The successful application of finite difference time domain (FD-TD) methods to millimetric planar transmission lines presupposes a satisfactory answer to the problem of infinite line termination (absorbing boundary condition) in the presence of high frequency dispersion. A technique is proposed that reduces residual reflection to less than 1% for microstrip and coplanar line circuits up to and beyond 50 GHz. Four examples, two in microstrip, two in coplanar waveguide, are discussed.<
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