dual band
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CPW-fed Dual Sense Slot Antenna for Circular Polarization
Abstract: A novel compact dual-band and dual-sense circularly polarized coplanar waveguide (CPW) fed rectangular slot antenna is proposed. Dual-band and dual-sense is realized by a proper choice of the L-shape feed line and two parasitic elements inside the slot. A prototype dual-sense antenna is fabricated. The antenna has a compact size of 63.5×55mm2. Measured 3dB axial ratio bandwidth of the lower band with right hand circular polarization (RHCP) is 26.32% (1.435GHz …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 1, 2021 · pp. 17–24 Read article
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A Compact Design of Dual Band Micro Strip Antenna for WLAN/WiMax Applications
Abstract: In this paper compact dual wide band micro strip antenna has been designed with line feed technique. The return loss bandwidth achieved is 12.34% (1.398–1.582) GHz and 21.56% (2.395–2.974) GHz with a maximum return loss –44.89 dB at resonant frequency 2.656 GHz by using Zeland IE3D software. The fabricated line feed patch antenna is tested and measured by using spectrum analyzer.
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 1–6 Read article
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Compact Dual Band Rat Race Coupler Using T-shaped Transmission Line and Fractal Geometry
Abstract: In this paper, a compact dual band rat race coupler is proposed at two different frequency bands. The dual band property is accomplished by transforming the length and impedance of conventional quarter wave transmission line into dual band T-shaped sections. To achieve the compactness, the dual band rat race coupler was transformed into fractal structure using Sierpinski curve analogy. Simple design equations are used for basic design geometries. Then the …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 2, 2017 · pp. 6–12 Read article