Network Modeling and Circuit Characteristics of Aperture-Coupled Vertically Mounted Strip Antenna

Abstract

A general analysis of an aperture-coupled vertically mounted strip antenna is presented to examine its circuit characteristics. Based on the present analysis, an equivalent circuit model is developed, and an analytic or semi-analytic evaluation of the related circuit element values is described. The effects of structure parameters on the antenna characteristics were studied with the developed equivalent circuit, and the design curves were obtained. To check the validity of the proposed analysis and design theory, two C-band antennas (5.0 GHz and 4.5 GHz) were designed and fabricated. Their computed characteristics, derived from the proposed network analysis, were compared with the measurement and simulation results. The error of the current model in predicting the operating center frequency was less than 0.50 %. In addition, the observed bandwidth was found to be comparable to the conventional microstrip antennas. All the results fully validated the efficiency and accuracy of the proposed analysis and network model.

Double‐sided aperture‐coupled vertically mounted strip antenna

“…There has been increasing interest in wideband and multiband wireless communication and radar systems, which leads to a great demand in designing appropriate microstrip antennas . There have been recent studies on aperture‐coupled vertically mounted strip circuits and antennas, and the impedance and radiation characteristics of aperture‐coupled vertically mounted strip antenna (ACVMSA) have been examined . Along with the wideband antenna, much attention has been paid to multiband, especially dual‐band, antennas.…”

Design, Analysis, and Equivalent Circuit Modeling of Dual Band PIFA Using a Stub for Performance Enhancement

“…The parameter values for each RLCG branch are calculated using Eqs. (14)- (16) and are depicted in Table 2. Fig.…”

“…(14)- (16). All branch elements are connected in parallel and the complete schematic of the synthesized equivalent circuit of Eq.…”

“…The equivalent circuit of simple antenna structures with one resonance point can be derived in the form of transmission line models [14][15][16], frequency independent lumped element resonant structures [17,18], and physics-based compact lumped structures using the partial element equivalent circuit (PEEC) technique [19]. However, it is difficult to formulate equivalent circuits for complex antenna structures with multiple resonances.…”