CPW-Fed Aperture-Coupled Slot Dipole Antenna for Tri-Band Operation

Abstract

A uniplanar aperture-coupled slot dipole antenna capable of tri-band operation is presented. Design considerations for the three operating frequencies are extensively discussed. The lower and middle operating frequencies can be obtained by varying the lengths of the lower and middle pairs of the protruded slots, respectively, while the upper frequency can be determined by adjusting the lengths of the upper protruded slot pair and the coupling aperture pair. Within each band, slot-dipole-like radiation patterns, low cross-polarized radiations, and moderate antenna gains can be observed.

CPW-Fed Transparent Antenna for Vehicle Communications

“…Similar behavior is observed in Figure 3c when varying the width of the central patch, the high frequency is mainly affected, whereas the lower band is minimally changed. The reason is attributable to the fact that lengths of W2 and Wp1 are closer to the shortest wavelength [41]. It is important to mention that in our simulations, the SMA connector was considered.…”

“…Therefore, it is important to incorporate them into the antenna design and simulation process. Moreover, a coplanar waveguide-fed slot antenna with impedance matching stub was chosen to obtain a multiband response through a crossmatch technique for a proper impedance matching [40,41], and allowing both the radiator and the ground plane to be on the same side for fabrication ease. High-frequency structural simulator (HFSS, ANSYS, PA, US) was used to design and optimize the chosen topology for the transparent antenna through parametric analysis.…”

“…Currently, several communications systems integrate with vehicles due to the growing demand for connectivity in 6 GHz bands, is proposed for future vehicular communications applications. In order to obtain the desired frequencies, a modified ground plane was introduced with symmetrical rectangular stubs [40,41]. The antenna characterization is performed by considering the measured reflection coefficient and the radiation pattern.…”

An efficient frequency adjustable penta-band slot antenna

“…For example in [2]- [4] one and in [5]- [7] two bands of a dual-band antenna can be varied independently. Also in [8] two and in [9] three bands of a triple-band antenna are adjusted by one parameter.…”