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In this study, A multi band and dual band antenna using slot stepped-impedance resonators(SIR) and coplanar waveguide (CPW) feeding have been investigated. All of the proposed antennas are fabricated on 1-mm FR4 substrates with a dielectric constant of 4.4 and a loss tangent of 0.02. In comparison to the conventional uniform — impedance resonator (UIR), the SIR shows a better control over spurious...
A simple configuration that can be used to achieve broad band characteristics is the biconical antenna formed by two cones. In this paper the biconical dipole is modeled for examining its general characteristics. The biconical dipole with cone angle 90 degrees and its open wire structure equivalent are modeled by using WIPL-D program. The Gain and Radiation patterns are presented. The characteristics...
A novel 3D monopole antenna is proposed for wide band handset application. A tri-monopole technique is employed to increase the impedance bandwidth, and patch loading is introduced to improve impedance matching. The measured and simulation impedance bandwidths are from 0.8 to 1.0 GHz, 1.7 to 2.5 GHz. It can be worked at GSM 800MHz, 900MHz, 1800MHz, 1900MHz, UMTS 2200MHz and WIFI 2450MHz. The measured...
This paper presents a wideband UHF RFID tag designed for operating on multiple materials including metal. We describe the antenna structure and present the comparison of modeling and simulation results with experimental data.
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