Modeling of microwave ring resonators using the finite-difference time-domain method (FDTD)

Abstract

Scattering parameters of microstrip ring resonators (with and without slits) that are either edge or side coupled to the feedlines are simulated by the FDTD method. The strip conductors on the device can either be infinitely thin or finite in thickness. The simulations predict the occurrence of resonance peak splitting due to the simultaneous existence of magnetic and electric field coupling mechanisms. Excellent agreement was obtained between the simulation results and the measured data for a ring resonator. We have also shown that it is possible to use finite‐difference time‐domain simulations to determine the dielectric constant of substrate materials. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 392–396, 2000.

Demonstration of Container Effects on Recognition Process of Liquids Using a Ring-Resonator Measurement Method

“…Besides, it is generally used in microwave devices such as couplers, filters, mixers, oscillators, and antennas. The process of this method can be explained as a relationship between frequency and resonance 26 . A structure of ring resonator method consists of a ring on substrate and transmission line to measure the magnitude of S 21 (dB) and phase values.…”

Microwave studies by perturbation of Ag thick film microstrip ring resonator using superstrate of bismuth strontium manganites

“…There are several models, from which dielectric constant and other microwave studies can be elaborately investigated like “magnetic wall model”, “planar waveguide model” transmission‐line analysis, and finite‐difference time‐domain method (Semouchkina et al , 2000), parallel plate method, coaxial line method and resonator method (Chou et al , 2008). However, at present there are no commercially well equipments which measure the dielectric constants, losses of thick and bulky materials at microwave frequencies.…”

Analysis of Capasitively Coupled Microstrip-Ring Resonator Based on Spectral Domain Method

“…The interest of researchers and commercial communication industry engineers to these structures has recently increased due to the application of ferroelectric thin-film substrates, high-temperature superconducting microstrip lines and metamaterials in ring resonator fabrication [11][12][13][14]. Because of this wide range of applications, many researches have been made to analyze these structures [1,[15][16][17][18][19]. But in the previous works, the method of analysis was based on Hankel Transform Method (HTM) without considering feeding line.…”

“…But in the previous works, the method of analysis was based on Hankel Transform Method (HTM) without considering feeding line. In [16], the analysis of microstrip ring resonator considering probe excitation is presented and in [17][18][19], the analysis of ring resonator coupled to feeding line is presented by making the use of FDTD [17,18] and ABCD and Y-admittance matrices [19]. In this paper, using the moment method in the spectral domain, full wave analysis of the structure is presented.…”