Design of dual band slotted reconfigurable antenna using electronic switching circuit

Abstract

This paper proposes a dual band reconfigurable microstrip slotted antenna for supporting the wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications, providing coverage where both directive and omni-directive radiations are needed. The design consists of a feedline, a ground plane with two slots and two gaps between them to provide the switching capability and a 1.6 mm thick flame retardant 4 (FR4) substrate (dielectric constant Ɛ=4.3, loss tangent δ=0.019), modeling an antenna size of 30x35x1.6 mm3. The EM simulation, which was carried out using the connected speech test (CST) studio suite 2017, generated dual wide bands of 40% (2-3 GHz) with -55 dB of S11 and 24% (5.2-6.6 GHz) higher than its predecessors with lower complexity and -60 dB of S11 in addition to the radiation pattern versatility while maintaining lower power consumption. Moreover, the antenna produced omnidirectional radiation patterns with over than 40% bandwith at 2.4 GHz and directional radiation patterns with 24% bandwith at the 5.8 GHz band. Furthermore, a comprehensive review of previously proposed designs has also been made and compared with current work.

Reconfigurable composite right/left-handed transmission line antenna based Hilbert/Minkowski stepped impedance resonator for wireless applications

“…The antenna operates at 2.45 GHz, 3.1 GHz, 4.1 GHz, 3.8 GHz, 7.8 GHz, and 9.5 GHz, which is suitable for various wireless applications. Furthermore, a pattern reconfigurable microstrip antenna with a dual-band operation was presented in the study [8]; the antenna operates at 2.4 GHz and 5.8 GHz with omni and directional radiation patterns, respectively. Additionally, a dual-band pattern reconfigurable antenna for beam steering applications was proposed [9]; an EBG structure was used to achieve reconfiguration at 2.45 GHz and 5.8 GHz with beam steering of (0°, +26°, and −26°).…”

Octa-band reconfigurable monopole antenna frequency diversity 5G wireless

“…The transmission line model theory is used to estimate the antenna's resonant lengths [13]. By applying the law from ( 1) to (10) to find Lf that represents, in this case, 𝐿₄. ₃₁, 𝐿₃.…”

“…₉₂ To get the desired frequency modes, the switching states must be adjusted. As an example, let us use the guided wavelength and resonant length as (1) to (10). 𝐿₃.…”

“…The antenna's huge size necessitates using a filter to block specific frequencies. WiMAX's monopole antenna is now available in a dual-band configuration in versions [10], [11]. A varactor diode was used to modify the frequency range of the antenna.…”

Design of traveling wave slotted waveguide array antenna with high efficiency

“…the waveguide itself. Thus, the design is simple and does not need feeding networks, and other useful ISSN: 2502-4752  advantages of these antennas are small size, light weight and high efficiency, so they are considered an ideal preferred solution in high-energy communications, radar, microwave and navigation systems [9]- [11]. One of the most important applications of edge aperture array antennas, or the so-called transverse tilted aperture antennas, is in radars, digital warfare, and communications, for its ease of manufacture and its distinction of low cost, high gain and little loss [12], [13].…”