Research Article | OPEN ACCESS
Design of Compact UWB Bandpass Filter with Sharp Rejection Characteristics
Gyuje Sung
Department of Electrical and Electronic Engineering, Institute for Information Technology Convergence, Hankyong National University, 327 Jungangro Ansung, Kyonggi-Do 456-749, Korea
Research Journal of Applied Sciences, Engineering and Technology 2014 3:394-397
Received: March 19, 2014 | Accepted: April 15, 2014 | Published: July 15, 2014
Abstract
This study presents an Ultra-Wideband (UWB) filter with sharp rejection characteristics at the upper Wireless Local Area Network (WLAN) band. The filter adopts the modified Composite Right/Left-Handed (CRLH) Transmission Lines (TLs), the unit cell of which is theoretically analyzed to derive the design formulas. Subsequently, a UWB bandpass filter is designed using these formulas. The measurement results show that the fabricated UWB bandpass filter has an insertion loss of less than 1.1 dB, bandwidth of 3.1~4.9 GHz and a rejection of more than 50 dB at 5.8 GHz.
Keywords:
Bandpass Filter (BPF) , Composite Right/Left-Handed (CRLH) transmission line, sharp rejection characteristics , Ultra-Wideband (UWB),
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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