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A linearly polarized, dual-port, and dual-band radio frequency identification reader antenna is designed to simultaneously operate at ultrahigh frequency (UHF) and ultra-wideband bands for positioning systems. A hybrid design using patch and slot structures within a shared radiating aperture is proposed and demonstrated to achieve a high gain and wideband operation with a limited profile. The size...
An omnidirectional horizontally polarized antenna with an ultra-wideband impedance and radiation bandwidth is proposed in this paper. The connected Vivaldi antenna array is firstly applied to realize a UWB horizontally polarized antenna with good omnidirectional radiation properties. The designed antenna exhibits a relative impedance bandwidth of 163.17% for |S11|<-10dB (1.45–14.3GHz). Meanwhile,...
In this paper, two novel star shaped fractal monopole antenna with circular and hexagon slots and semi-elliptical ground are presented for ultra-wideband applications. The designed antennas have a compact dimension of 20 × 21 × 1 mm3. A 50 ohm impedance matched microstrip feed line having width 1.9 mm is used to excite both the antennas. A wide bandwidth of 8.67 GHz is obtained starting from 4.4 GHz...
Reduced ground plane UWB antenna with rectangular patch on FR4 substrate is designed and its analysis is presented in this paper. Performance analysis was carried out for return loss, VSWR, radiation characteristics and impedance matching for the resonance frequency of 6.85 GHz. HFSS tool is used for simulation and the result shows multi resonance characteristics with bandwidth of 6.7 GHz in UWB range...
This paper presents a compact low-cost microstrip antenna for ultra-wideband (UWB) operation. The antenna is printed on a 30 mm times 20 mm times 1.6 mm FR4-epoxy substrate and has a dual-modified-Sierpinski-carpet-shaped patch above a partial ground plane. A matching section connects the patch to an I-shaped feed line. The antenna is designed and simulated using both the Finite-Element Method and...
In modern wireless communication system design, antennas with wide impedance bandwidth are desirable for numerous reasons. An antenna with a wide impedance bandwidth may be used for transmission and reception of multiple narrowband services in a multi-purpose platform. Alternatively a single wideband service may be of interest for various radar and imaging applications, or for impulse based radio...
In this paper a simple structure of Ultra Wideband (UWB) antenna is proposed. The antenna offers excellent performance for UWB system, ranging from 3.7 GHz to 13.8 GHz. The antenna exhibits a 10 dB return loss bandwidth over the entire frequency band. The antenna is designed on FR4 substrate and fed with 50 ohms microstrip line. It is found that the frequency band depends on the width of the partial...
Microstrip Antennas (MSAs) consist of a metallic radiating patch on one side of thin dielectric substrate and other side is ground plane. Most important advantages of MSAs are low profile, light weight and compatibility with integrated circuit technology. MSAs are used in mobile communication, satellite communication, radar, direct broadcasting, global positioning systems and remote sensing. The major...
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