Numerical modeling and experimental investigation of resonance properties of microwave capacitors

The finite-difference time-domain (FDTD) field simulations have been employ ed to visualize standing-wave patterns in single-layer, rectangular, planar capacitors and capacitor chips. These patterns are used for the analysis o f the resonant mode types, and for the determination of the resonance frequ encies. The results of simulation are experimentally verified by measuring the S-parameter spectra. In addition, we show that the dimensions of the ca pacitor plates can be optimized in order to maximize the first resonant fre quency of the capacitor, rendering it useful for high-frequency application s. (C) 2001 John Wiley & Sons, Inc.