Dynamic analysis of a microstrip line over a perforated ground plane

X band parallel coupled- line with dumbbell dgs filter for radar applications

“…4, the frequency characteristic of the proposed DGS can be modeled by a single parallel RLC resonator circuit, where L denotes as the affection of rectangular lattice in the defected unit and C denotes as the affection of slit between two rectangular lattices [16] which blocks the signal as an open at the resonant frequency. The equivalent circuit of the parameters can be extracted from the simulated transfer characterictics [16][17]. The inductance and the capacitance of the parallel RLC resonant circuit are related to the shape of the defects, as well as the gap width between the upper side defect and lower side defect.…”

“…Fig. 2 shows several resonant structures that may be used in the DGS and defected areas can be realized not only by dumbbell slot shape also with other geometries such as rectangular [14][15][16], square [17][18], circular [10] and modified dumbbell [11][14] [19] have been appeared in the literature.…”

Guided‐wave characteristics of periodic microstrip lines with inductive loading: Slow‐wave and bandstop behaviors

“…As such, it is a stringent issue to investigate these periodic transmission lines in terms of their unit-length transmission parameters, that is, propagation constant and characteristic impedance, as given in [1]. For this purpose, much effort [5][6][7][8] has been recently made to directly de-embed these parameters from full-wave method-of-moments (MoM) simulation in order to provide a physical insight into their performance. Unfortunately, only phase constant and real characteristic impedance have been reported so far.…”

“…They deposited microdroplets of DNA onto a resonant thin-film microstrip line [2] whose resonance frequency shifts, depending upon the different dielectric constants [3][4][5] of the deposited specimen. In principle, this new approach promises gene-detection schemes that work without any markers (such as fluorescent molecules) and are therefore less expensive and potentially less erroneous than established methods [6,7].…”

Analysis of microstrip lines on a perforated ground using reciprocity method

“…It avoids the more " brute-force" approach of modeling the actual situation of currents on the line, as done in the reference [3]. Although the present method is less rigorous than [3], because of not including of higher order modes. The present method is proved to be more simple, effective and also accurate.…”