A novel wideband high‐gain modified biquad dipole antenna. Issue 2 (18th November 2019)

• Record Type: Journal Article
• Authors: Amin, Ehsan; Ghalamkari, Behbod; Naser‐Moghadasi, Mohammad
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 30:Issue 2(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-11-18
• Subjects: biquad -- dipole antenna -- high‐gain -- low‐cost -- simple structure -- wideband; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.22037
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: This article thoroughly investigates a novel modified biquad dipole antenna with a simple structure, wideband, high‐gain and linear polarization key features for wireless communication systems fabricated on FR4 substrate. The proposed antenna is investigated using circular wire loop antenna designing and is, then, extended to a strip structure antenna. Here, a circular reflector is employed to achieve maximum gain, while a coax line feeds the dipole element. Additionally, the presence of a balun, or lack thereof, is examined. The bazooka balun balances the coaxial cable and increases the bandwidth. Consequently, a wide bandwidth and a triple bandwidth are achieved. The resulting parameters demonstrate that the entire S, partial L and C IEEE radio bands comprise the bandwidth of the proposed antenna. The simulated current distribution, experimented and simulated efficiency, radiation pattern, reflection coefficient and gain of the designed antenna are also examined. The simulation and experimentation results exhibit an impedance bandwidth of 105.4% (1.3‐4.2 GHz) for ( S 11 < −10 dB). The broadside radiation pattern fills the entire band with maximum simulated and measured gains of 11.8 and 11.02 dBi, respectively. The simulated and measured results tie in closely with each other.