Equivalent circuits for electrically small antennas using LSdecomposition with the method of moments
Abstract
As part of an investigation into methods for accelerating the process of filling the methodofmoments impedance matrix (Z), it was found that (Z) could be decomposed into three parts: a real inductance matrix (L) from the magnetostatic vector potential, a real elastance (inverse capacitance) matrix (S) from the electrostatic static scalar potential, and a complex impedance matrix (z/omega/) of residual frequencydependent contributions. By neglecting (z/omega/) at sufficiently low frequencies, static and quasistatic charge and current distributions were obtained. For electrically small antennas, a complete RLC circuit was obtained directly from a single quasistatic solution rather than as an approximate characterization of the impedance as a function of frequency. This gives a precise definition of the circuit parameters limiting the performance of electrically small antennas.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 December 1989
 DOI:
 10.1109/8.45109
 Bibcode:
 1989ITAP...37.1632S
 Keywords:

 Dipole Antennas;
 Equivalent Circuits;
 Method Of Moments;
 Rlc Circuits;
 Bandwidth;
 Capacitance;
 Electric Wire;
 Matrices (Mathematics);
 Resonant Frequencies;
 Communications and Radar