Bandwidth and gain improvement for reduced size of stacked microstrip antenna fed by folded triangular patch with half V‐shaped slot

Abstract

This study presents a new stacked design of reduced size broadband microstrip patch antenna for ultra-wideband (UWB) operation. A folded triangular patch's feeding technique, half V-shaped slot and shorting pins are employed to design the proposed stacked antenna. Shorting pins are applied at the edge of structure to miniaturize the size of the patch. The proposed design with the half V-shaped slot and without stacked patch provides the measured impedance bandwidth (S 11 <−10 dB) of 115.7% (4.35-16.3 GHz) for broadband application. In the proposed design with the half V-shaped slot, the wide bandwidth with an acceptable size reduction is achieved. By adding a stacked element on the upper patch, the impedance bandwidth of the proposed antenna is improved from 3.47 to 17.35 GHz. The stacked design includes a measured impedance bandwidth of 133.3% with reduced sizes of more than 78% compared to the corresponding full design and an enhanced maximum gain of 6.2 dBi. The obtained radiation and impedance results show that the proposed design is applicable for wideband operation. Besides, the effects of some basic concepts and surface currents on the suggested structure are investigated to explain their broadband performance.

CPW-fed printed tapered slot antenna loaded by a wideband stacked artificial magnetic conductor with a progressed performance

“…This design is obtained by using square stacked patches with various sizes and air gap. The applied technique of the stacked patches is recognized as a known approach to enhance the bandwidth such as microstrip patch antennas [23, 24]. By applying this approach the diverse design factors are achieved to gain an optimized broadband structure.…”

“…Although a limited impedance bandwidth of the introduced antennas is accounted a notable issue in most studies. Diverse approaches in previous works have been developed to ameliorate the bandwidth of microstrip antennas [23][24][25]. Recently, by ameliorating the variety of integrated circuit technologies, the broadband AMC surfaces in the low profile antennas and microwave devices are impressively utilized with improved features [26][27][28][29][30][31][32][33][34][35][36].…”

Radiation Properties Improvement of 1 × 4 Array of Wideband Printed Antenna Supported by AMC Surface for Vehicular MIMO Systems

“…Microstrip antennas can be a candidate to provide a high‐quality signal for vehicular wireless networks due to prominent features like low profile, light weight, and ease of implementation (Chi et al., 2019; Wen et al., 2020). In these structures, compact wideband microstrip antennas are applied for smart wireless devices and intelligent transport systems (Alibakhshikenari, Babaeian, et al., 2020; Alibakhshikenari, Virdee, Parchin, et al., 2020; Alibakhshikenari, Virdee, See, et al., 2020; Alibakhshikenari et al., 2015, 2017; Malekpoor & Hamidkhani, 2021; Nadeem et al., 2021).…”

A Low-Profile Broadband Metasurface Antenna With Polarization Conversion Based on Characteristic Mode Analysis

“…Traditional microstrip patch antennas are used in many scenarios because of their low profile, simple structure, easy fabrication, and easy integration [3][4][5]. However, as the requirements for antennas become higher and higher, microstrip patch antennas are difficult to meet the needs of modern communications because of their narrow impedance bandwidth and low gain.…”