A general planar circuit simulator based on two-dimensional TLM method

A very user-friendly two-dimensional circuit simulator based on the TLM (transmission-line matrix) method (2D-TLM) has been developed. It can analyze two-dimensional circuits of arbitrary geometry containing both linear and nonlinear media. The circuit geometry is input graphically. Both time-domain and frequency-domain responses can be computed and visualized. As examples, a microstrip lowpass filter, a microstrip varactor multiplier, and a waveguide post-coupled filter have been analyzed and compared with other methods.<>