Ashwani Kumar, A. K. Verma, Nainu P. Chaudhari, "DGS Based Legendre Low-Pass Filters for RF/Microwave," WSEAS Transactions on Communications, vol. 13, pp. 80-93, 2014, DOI:
Ashwani Kumar, A. K. Verma, Nainu P. Chaudhari. DGS Based Legendre Low-Pass Filters for RF/Microwave.
WSEAS Transactions on Communications. 2014;13:80-93.
WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 13, 2014
DGS Based Legendre Low-Pass Filters for RF/Microwave
Authors: , ,
Abstract: The Legendre group of lowpass filters are designed and compared against several known types of filters at = 2.5GHz in lumped elements, microstrip and DGS environment. In microstrip format the Legendre Polynomial Product (LPP)-312 and 213 filters have reduced group delay variation in the passband, sharper cut-off and wider impedance matching BW. In the DGS format the measured selectivity of Legendre, LPP-312 and LPP-213 lowpass filters are 28.3dB/GHz, 18.8B/GHz and 18.2B/GHz. Their 20dB rejection BW (RBW) are 6.0 GHz, 7.7GHz and 7.9 GHz; it covers 20dB rejection up to 4fc-5fc in the stopband. The LPP-213 has better than 15dB impedance matching BW (94%) and more than 20dB rejection BW (7.3GHz).
Pages: 80-93 WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 13, 2014, Art. #9 DOI: *As the DOI is a unique identifier, it is already available in the pdf version.
**The DOI link will be activated in the first midst of January 2026.
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