A Comparative Study of Compact Multiband Bio-Inspired Asymmetric Microstrip Fed Antennas (BioAs-MPAs) for Wireless Applications

Abstract

A comparative analysis of compact multiband bio-inspired Asymmetric microstrip fed antennas (BioAs-MPAs) is presented in this paper for the first time. The proposed antennas are based on semi-Carica papaya-leaf shaped, semi-Monstera deliciosa-leaf shaped, semi-Vitis vinifera shaped, Defected Ground Structure (DGS) and L-slit techniques. The antennas are built on a 33 × 15 mm2 Rogers duroid 5880 substrate. The modelling equations for resonant frequencies of the proposed arbitrarily shaped radiating patch is based on modified circular patch modelling equations. The semi-Carica papaya-leaf antenna operates at 2.4 GHz and 4.4 GHz, Monstera deliciosa-leaf antenna operates at 2.6 GHz, 4.4 GHz and 5.5 GHz, while Vine-leaf antenna operates at 2.5 GHz and 5.4 GHz. The proposed BioAs-MPAs antennas radiation patterns at E-plane are Bi-directional in all the operating frequencies with suitable X-Pol purity and have Omnidirectional radiation patterns at H-Plane in all the operating frequencies. As a result of the analysis, it was found that each of the bio-inspired structures has its unique merit over the others. Owing to the small size, stable radiation pattern, acceptable gain and high radiation efficiency, the proposed BioAs-MPAs antennas are suitable for ISM band, Bluetooth, Wi-Fi, WiMAX, LTE, UMTS, Sub6 GHz 5 G band, ZigBee and RF-Altimeter used in unmanned aerial vehicle and Aviation industry.

A shorting-pin based compact meander multiband printed monopole antenna

“…Many techniques have been explored in the literature for the miniaturization of multiband antennas. For example, slotting [1,2,3,4,5], Defected ground structure (DGS) [6,7,8,9], parasitic loading [6,10,11,12,13,14,15], and multiple structure techniques have been used. Some of these structures have their disadvantages, for example, slotting (on the radiating patch) reduces the antenna gain and radiation efficiency; DGS can lead to complex structure; parasitic loading and multiple structure techniques increase the antenna size.…”

“…In recent times, the bio-inspired structure has also attracted antenna engineers due to its advantages such as perimeter improvement, fractality (self-repeating) nature, and flexibility. Whereas, majority of the bio-inspired antennas reported in the literature focus on ultrawideband applications [ 18 , 19 , 20 , 21 , 22 ], others have also explored it in developing compact multi-band antennas [ 4 , 5 , 23 ].…”

Ram Horn-Shaped Inspired Folded Compact Antenna for 4G LTE-A and WLAN Portable Mobile Applications

“…e same meandering technique has been recently exploited by authors in [5][6][7][8]. Furthermore, the slotting technique has been used by authors in [2,[20][21][22][23][24][25]. For example, authors in [20] used the Audi logo-shaped as a slot on a rectangular patch on a 20 × 12 mm 2 FR-4 substrate to achieve a triband antenna operating at 3.9 GHz, 5.0 GHz, and 7.1 GHz, respectively.…”

“…In the same light, authors in [15] have also used metasurface to achieve 67% miniaturization. In recent times, folded monopole antenna has attracted antenna design engineers due to its ability to reduce overall antenna size [25][26][27][28][29][30][31][32][33][34]. Folded monopole antenna uses the principle of space filling to miniaturize the antenna radiating patch.…”

Corrigendum to “A Comparative Study of Compact Multiband Bio-Inspired Asymmetric Microstrip Fed Antennas (BioAs-MPAs) for Wireless Applications”

“…In the article titled "A Comparative Study of Compact Multiband Bio-Inspired Asymmetric Microstrip Fed Antennas (BioAs-MPAs) for Wireless Applications" [1], the authors identified an error in equation ( 1), and the corrected equation is as follows:…”