Abstract
This paper presents a new design of a compact, high-gain coplanar waveguide-fed antenna and proposes a multielement approach to attain enhanced characteristics. The proposed method overcomes the simulation and geometrical complexity and achieves optimal performance features. The antenna prototype is carefully designed, and simulation results have been analyzed. The proposed antenna was fabricated on a new WangLing TP-2 laminate with dimensions (0.195λ × 0.163λ × 0.0052λ) at the lowest resonance of 9.78 GHz. The results have been tested and experimentally verified. The antenna model achieved excellent performance including a peak realized gain better than 9.0 dBi, optimal radiation efficiency better than 87.6% over the operating band, and a good relative bandwidth of 11.48% at 10 dB return loss. Symmetrical stable far-field radiation pattern in orthogonal planes and strong distribution of current are observed. Moreover, a comparative analysis with state-of-the-artwork is presented. The measured and simulation result shows a good agreement. The high-performance antenna results reveal that the proposed model is a good contender of military airborne, land, and naval radar applications.
Highlights
Academic Editor: Mohammod Ali is paper presents a new design of a compact, high-gain coplanar waveguide-fed antenna and proposes a multielement approach to attain enhanced characteristics. e proposed method overcomes the simulation and geometrical complexity and achieves optimal performance features. e antenna prototype is carefully designed, and simulation results have been analyzed. e proposed antenna was fabricated on a new WangLing TP-2 laminate with dimensions (0.195λ × 0.163λ × 0.0052λ) at the lowest resonance of 9.78 GHz. e results have been tested and experimentally verified. e antenna model achieved excellent performance including a peak realized gain better than 9.0 dBi, optimal radiation efficiency better than 87.6% over the operating band, and a good relative bandwidth of 11.48% at 10 dB return loss
3.5–5.8 GHz frequency range [2, 3]. erefore, it is essential to develop the high-performance antennas which can be utilized with an efficient wireless communication system, for airborne, land, and naval radar applications. e conventional compact planar antennas (CPA) have low gain, limited radiation efficiency, and narrow bandwidth (BW) performance [4]
Modified T-shaped slot reported in the open literature, it is estimated that the performance analysis results may not be better than the obtained results of the antenna presented in this paper
Summary
A Compact High-Gain Coplanar Waveguide-Fed Antenna for Military RADAR Applications. Zaheer Ahmed Dayo, Qunsheng Cao ,1 Yi Wang, Sandeep Pirbhulal, and Ali Hassan Sodhro. Several designs based on different shapes of slots [9,10,11,12], radiators [13,14,15,16], and ground plane [17, 18] have been proposed to attain the substantial peak realized gain, good radiation efficiency, and acceptable impedance BW along with perfect matching. E investigated antennas have complex designs and analyzed results were optimal with a trade-off between the BW, peak gain, radiation efficiency, and compact dimensions. E proposed antenna has the dimensions of 15 × 15 cm and obtained a high gain of 7.5–9 dBi. Recently, several new approaches have been employed to improve the gain of compact antennas. The radiating structure of the antenna contains additional loaded rectangular stubs with miniature dimensions of 2.9 × 0.3 cm and form an extended
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