Matched loads simulation using ghost basis functions for moment‐method analysis: Applications to microwave planar circuits

Abstract

A clever way to simulate numerical matched loads is presented and applied in the mathematical framework of the moment method. This approach presents a lot of advantages with regard to other numerical matched load simulations, and could be used whateier the shape of the planar circuit without the help of the characteristic impedance concept. Results show that very good efficiency is obtained for the reflection coefficient of such matched loads. Typical results are exhibited for S‐parameter determination of multipart microstrip circuits. © 1994 John Wiley & Sons, Inc.

CAD Modelling and Characterization of a Superconducting Planar Microwave Resonator Using Complex Conductivity Measurements

“…The determinaton of Qp is performed by considering the loaded quality factor of a perfect shielded resonator (CCE), with no substrate and radiation losses, connected to the measurements ports throught coupling gaps. Both ports have been in this numerical experience matched with the help of numerical matched loads, as described in [8].…”

“…This equivalent surface impedance of the strip may be accurately derived from the numerical determination of the electromagnetic field within the strip with a point matching technique [61, and may be written throught the use of geometrical weighting factors kr and ki [7]:' Zseq = kr Rs + jki Xs (2) where Rs and Xs are respectively the real and imaginary parts of the classical surface impedance [8]:…”