DGS based legendre low-pass filters for RF/Microwave

Ashwani Kumar; A. K. Verma; Nainu P. Chaudhari

DGS based legendre low-pass filters for RF/Microwave

Ashwani Kumar, A. K. Verma, Nainu P. Chaudhari

Research output: Contribution to journal › Article › peer-review

Abstract

The Legendre group of lowpass filters are designed and compared against several known types of filters at f_c^3dB = 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 4f_c-5f _c in the stopband. The LPP-213 has better than 15dB impedance matching BW (94%) and more than 20dB rejection BW (7.3GHz).

Original language	English
Pages (from-to)	80-93
Number of pages	14
Journal	WSEAS Transactions on Communications
Volume	13
Publication status	Published - 2014
Externally published	Yes

Keywords

Defected Ground Structure (DGS)
Group delay (GD)
Legendre LPF
Low pass Filter (LPF)

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http://wseas.org/wseas/cms.action?id=7652

Cite this

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title = "DGS based legendre low-pass filters for RF/Microwave",

abstract = "The Legendre group of lowpass filters are designed and compared against several known types of filters at fc3dB = 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-5f c in the stopband. The LPP-213 has better than 15dB impedance matching BW (94%) and more than 20dB rejection BW (7.3GHz).",

keywords = "Defected Ground Structure (DGS), Group delay (GD), Legendre LPF, Low pass Filter (LPF)",

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TY - JOUR

T1 - DGS based legendre low-pass filters for RF/Microwave

AU - Kumar, Ashwani

AU - Verma, A. K.

AU - Chaudhari, Nainu P.

PY - 2014

Y1 - 2014

N2 - The Legendre group of lowpass filters are designed and compared against several known types of filters at fc3dB = 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-5f c in the stopband. The LPP-213 has better than 15dB impedance matching BW (94%) and more than 20dB rejection BW (7.3GHz).

AB - The Legendre group of lowpass filters are designed and compared against several known types of filters at fc3dB = 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-5f c in the stopband. The LPP-213 has better than 15dB impedance matching BW (94%) and more than 20dB rejection BW (7.3GHz).

KW - Defected Ground Structure (DGS)

KW - Group delay (GD)

KW - Legendre LPF

KW - Low pass Filter (LPF)

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M3 - Article

AN - SCOPUS:84896944799

SN - 1109-2742

VL - 13

SP - 80

EP - 93

JO - WSEAS Transactions on Communications

JF - WSEAS Transactions on Communications

ER -

DGS based legendre low-pass filters for RF/Microwave

Abstract

Keywords

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