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2017-02-13
Triple-Band Composite Right/Left Handed Bandpass Filter Using a New Circular Inter-Digital Capacitor for Wireless Applications
By
Progress In Electromagnetics Research C, Vol. 71, 133-140, 2017
Abstract
In this paper, a compact triple-band bandpass filter based on composite right/left handed (CRLH) approach has been proposed. The zeroth order resonance (ZOR) frequency of the designed filter can be controlled effectively by varying the series parameters. A new circular interdigital capacitor is integrated to provide series capacitance. The number of passbands depends on number of rings of circular interdigital capacitor (C-IDC). In order to validate metamaterial behavior, a dispersion diagram has been plotted for the designed filter. The proposed filter offers measured 3dB fractional bandwidth of 71% at 1.7 GHz, 24% at 2.9 GHz and 12% at 4.1 GHz as center frequencies. The designed filter will be suitable for different wireless applications such as global navigation satellite systems (1.559-1.610 GHz), GSM1800, indoor femtocells (2.5-2.7 GHz), air traffic surveillance (2.7-2.9 GHz) and fixed satellite services (3.8-4.2 GHz). The size of the proposed filter is 0.13λ0 × 0.11λ0, where λ0 is the free space wavelength at ZOR frequency of 1.7 GHz.
Citation
Ashish Kumar Dilip Kumar Choudhary Raghvendra Kumar Chaudhary , "Triple-Band Composite Right/Left Handed Bandpass Filter Using a New Circular Inter-Digital Capacitor for Wireless Applications," Progress In Electromagnetics Research C, Vol. 71, 133-140, 2017.
doi:10.2528/PIERC16122903
http://www.jpier.org/PIERC/pier.php?paper=16122903
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