A Wideband Highly Efficient Omnidirectional Compact Antenna for WiMAX/Lower 5G Communications

Abstract

Microstrip patch antenna (MPA) is widely used for different wireless communications such as WiMAX and fifth generation (5G). In this paper, a wideband, highly efficient, omnidirectional, compact novel patch antenna has been designed and reported for WiMAX/lower 5G communications. The proposed compact MPA is made on Rogers RT 5880 ( ɛ r = 2.2 and tan δ = 0.0009 ). The physical volume of the MPA is compact ( 32 × 32 × 0.79 mm3). The MPA consists of seven small square-shaped elements that are diagonally connected with each other. The 7-element antenna works at 3.592 GHz with a suitable reflection coefficient of -46.78 dB and a -10 dB bandwidth (BW) of 1.40 GHz, covering 3.10-4.50 GHz. The apex gain ( G ) and the directivity ( D ) of the designed prototype are 3.90 dB and 4.20 dBi, respectively. The antenna maintains a high efficiency of 94-98% over the 3.10-4.50 GHz operating range. The VSWR of the antenna is close to unity, which is 1.0092 at 3.592 GHz. Initially, CST is used to design the antenna, and then, all the properties have been buttressed by using high frequency structure simulator (HFSS). Finally, a prototype of the compact 7-element antenna has been developed and measured. Owing to getting good results for the intended applications, the presented compact antenna can be a reliable candidate for WiMAX (3.4-3.6 GHz) and lower 5G (3.3-4.2 GHz).

Design of Enhanced Wide Band Microstrip Patch Antenna Based on Defected Ground Structures (DGS) for Sub-6 GHz Applications

“…In recent literature, various approaches to wideband microstrip patch antenna design have been explored, targeting applications of Sub-6 GHz applications. In [16], the study introduced a compact MPA with a 32 × 32 × 0.79 mm³ dimension, employing a Rogers RT 5880 substrate for efficient WiMAX and 5G applications, achieving a -46.78 dB reflection coefficient and 1.40 GHz bandwidth. Another work in [17] designed a Sub-6 GHz wideband antenna on an FR4 substrate, measuring 40x30x1.6 mm, with gains ranging from 1.73 to 3.22 dB.…”

Design of an enhanced dual-band microstrip patch antenna with defected ground structures for WLAN and WiMax

“…The last decade has seen remarkable advancements in dual-band microstrip patch antennas some of which have already been proposed in [9]- [12], a compact, highly efficient MPA for WiMAX and 5G, fabricated on Rogers RT 5880, features seven small square-shaped elements achieving significant bandwidth and efficiency [13]. Studies have introduced various innovative designs, such as circularly polarized antennas for wireless local area network (WLAN), Wi-Fi, and Wi-MAX applications [14], an antenna employing a partial ground architecture has been developed, measuring 40×30×1.6 mm and constructed on an flame retardant (FR-4) substrate, demonstrating a return loss below -10 dB across 3 to 5.64 GHz, with gains ranging from 1.73 to 3.22 dB and a maximum radiation efficiency of 90%.…”