Design and investigations of a microstrip fed open V-shape slot antenna for wideband dual slant polarization

Abstract

a b s t r a c tA dual slant polarized slot antenna is proposed. The antenna is printed on the two sides of a single substrate and has two microstrip feed lines to excite a V-shaped slot formed by the merging of two tilted rectangular step shaped slots. Stepping of the slot sections as well as the feed line improves the impedance matching. A narrow rectangular metallic stub is introduced at the junction of the slot arms to improve the decoupling between the ports. The antenna polarization is þ45 0 /À45 0 with respect to horizontal under alternate excitation and this dual slant polarized nature is demonstrated through aperture electric field plots and far field radiation patterns. The measured return loss bandwidth (S 11 < À10 dB) of the antenna is from 2.3 GHz and extends beyond 12 GHz while the measured isolation bandwidth (S 21 < À20 dB) is from 5 GHz onwards. The time domain characterization of the antenna is also done by calculating the fidelity factor. For evaluating the diversity performance, the envelope correlation coefficients are calculated from the simulated and measured S-parameters. The correlation coefficients are well below the acceptable values. With a peak gain varying between 3 and 5 dBi, the antenna is expected to be useful for wideband dual slant polarized applications.

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets

“…Hence, the antenna is useful in the UWB impulse radio and microwave imaging. Table 2 provides a comparative summary of the fundamental properties of the presented design with the reported dual-polarized antennas available in the literature [47][48][49][50]. When compared with reported designs, the presented antenna has a simple structure with a compact, as summarized in Table 2.…”

Umbrella-Shaped Wideband MIMO Wireless Communication Antenna

“…Moreover, CP antennas have become more popular recently because they have better signal propagation characteristics than Linearly Polarized (LP) antennas [19]. Nevertheless, CP can be used in conjunction with orthogonal dual-feed to provide high isolation [20]. So, the current work aims to use this approach.…”

A Design of CP-MIMO System with Elements of a Diamond-Ring Slot for 5G Mobile-Phone

“…On the other hand, CP can combine with the orthogonal dual-feed to obtain high isolation [12], so the present study attempts to use such a strategy. Many pieces of research deal with a slot microstrip-line to create the dual-polarized antenna with different shapes to slot such as in [13], [14], proposed V and L-shaped slot antenna for dual-polarization respectively to obtain Ultra-Wide Band (UWB). In this paper, a dual-polarized MIMO system with CP is presented for 5G applications.…”