A detailed investigation of the two dimensional electric field distributions in bandpass filter elements that consist of microwave planar structures such as microstrip and coplanar waveguide is very useful for physical understanding, accurate and high-speed filter design and studies of electromagnetic coupling effects. By using a small electric coaxial probe, two dimensional electric field distributions for filter elements are measured. The proposed measurement system is very simple, wideband and accurate and is not required complicated system. Comparing the FDTD calculated results with measured results, the agreement is good. The upper limit of the operating frequency and the spatial resolution for the measurement system will be clarified.
A detailed investigation of the near electric field distributions in electromagnetic circuits such as microstrip/coplanar circuits and patch antennas is very useful for physical understanding, studies of electromagnetic coupling effects for EMC and EMI and for optimization of electromagnetic circuit designs. The aim of this paper is to show how to simulate and measure the near electric field distributions in microstrip/coplanar circuits and patch antennas. The full-wave analysis is carried out by using a finite-difference time domain technique, commercial-software Sonnet10.2 and its measurement is carried out by using a very small probe antenna. The leakage phenomenon which is not obtained by the simulation using a conventional FD-TD is observed by measurement of near electric field distributions of resonance modes of microstrip/coplanar resonator and patch antennas. It is considered that this leakage-phenomenon is caused by the electromagnetic coupling between the resonance mode of microstrip resonator and the surface wave TM 0 mode of covered dielectric slab that propagates from DC. The proposed measurement system offers a valid means for predictions in the theoretical analysis of more complicated discontinuity problems. Thus, the proposed measurement system offers a valid means for predictions in the theoretical analysis of more complicated discontinuity problems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.