Dual-band/tri-band/broadband CPW-Fed stepped-impedance slot dipole antennas

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题名:	Dual-band/tri-band/broadband CPW-Fed stepped-impedance slot dipole antennas
作者:	凃文化;Chen, Shih-Wei;Wang, Deng-Yin;Tu, Wen-Hua
贡献者:	資訊電機學院電機工程學系
关键词:	Antenna measurements;Antenna radiation patterns;Antennas;Applied sciences;Broadband antenna;Broadband antennas;Broadband communication;dual-band antenna;Exact sciences and technology;Impedance;Radiocommunications;Resonant frequency;Slot antennas;Telecommunications;Telecommunications and information theory;tri-band antenna
日期:	2014-01-01
上传时间:	2026-04-23 13:56:12 (UTC+8)
出版者:	Institute of Electrical and Electronics Engineers Inc.;New York, NY: IEEE
摘要:	摘要： In this study, two multi-band antennas and one broadband antenna using slot stepped-impedance resonators (SIRs) and coplanar waveguide (CPW) feeding have been investigated. All of the proposed antennas are fabricated on 1-mm FR4 substrates with a relative 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 response. In this way, a dual-band antenna (antenna A) and a tri-band antenna (antenna B) could be designed at desired bands. Antenna A is implemented with center frequencies (f 0 , f√) = (1.5 GHz, 3.5 GHz), and Antenna B is realized with center frequencies (f 0 , f S1 , f S2 ) = (1.5 GHz, 3.5 GHz, 5.5 GHz), where f 0 is the fundamental frequency. The broadband antenna (antenna C) is designed by allocating the first three resonant frequencies close enough to achieve a 98.7% fractional bandwidth with a return loss of greater than 6 dB from 1.5 GHz to 4.4 GHz. Furthermore, to tackle the null radiation problem at the broadside direction of antennas A and B, parasitic slots are added near the main radiating resonators so as to achieve nearly omni-directional radiation patterns at the high-order mode frequencies. 其他題名： TAP 出版者： New York, NY: IEEE 出版日期： 2014-01 出處： IEEE transactions on antennas and propagation, 2014-01, Vol.62 (1), p.485-490 資源來源： IEEE Electronic Library (IEL) 版權： 2015 INIST-CNRS 識別號： ISSN: 0018-926X 識別號： EISSN: 1558-2221 識別號： DOI: 10.1109/TAP.2013.2287523 識別號： CODEN: IETPAK
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