Wide stopband harmonic suppressed low-pass filter with novel DGS

Ubaid Rasool Bhat; Kumud Ranjan Jha; Ghanshyam Singh

doi:10.1002/mmce.21235

Wide stopband harmonic suppressed low-pass filter with novel DGS

Ubaid Rasool Bhat, Kumud Ranjan Jha, Ghanshyam Singh

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

14 Citations (Scopus)

Abstract

In this article, a wide stopband 20 dB harmonically suppressed low-pass filter (LPF) using novel defected ground structures (DGSs) is proposed. The DGSs has been analyzed as a low pass filter which shows a significant harmonics suppression in the stopband. The lumped parameter equivalent of the DGSs has been developed to show its effectiveness. The modified equivalent circuit model of the filter helps in placing the transmission zero near −3 dB cutoff frequency. The LPF is designed on a 0.10 λ_g× 0.09 λ_g substrate size where λ_g is guided wavelength at −3 dB cut-off frequency (f_c) equal to1 GHz. The simulation shows a 20 dB harmonic suppression up to 50 f_c. The prototype of the LPF has been developed and with the available vector network analyser, the S-parameters have been measured upto 20 GHz (20 f_c).The state of the art comparison of the LPF shows a high figure of merit equal to 26 250 which is higher than many recently published works.

Original language	English
Article number	e21235
Journal	International Journal of RF and Microwave Computer-Aided Engineering
Volume	28
Issue number	5
DOIs	https://doi.org/10.1002/mmce.21235
Publication status	Published - Jun 2018
Externally published	Yes

Keywords

defected ground structure
equivalent circuit model
harmonic suppression
low-pass filter
phase reversal

ASJC Scopus subject areas

Computer Science Applications
Computer Graphics and Computer-Aided Design
Electrical and Electronic Engineering

Access to Document

10.1002/mmce.21235

Cite this

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title = "Wide stopband harmonic suppressed low-pass filter with novel DGS",

abstract = "In this article, a wide stopband 20 dB harmonically suppressed low-pass filter (LPF) using novel defected ground structures (DGSs) is proposed. The DGSs has been analyzed as a low pass filter which shows a significant harmonics suppression in the stopband. The lumped parameter equivalent of the DGSs has been developed to show its effectiveness. The modified equivalent circuit model of the filter helps in placing the transmission zero near −3 dB cutoff frequency. The LPF is designed on a 0.10 λg× 0.09 λg substrate size where λg is guided wavelength at −3 dB cut-off frequency (fc) equal to1 GHz. The simulation shows a 20 dB harmonic suppression up to 50 fc. The prototype of the LPF has been developed and with the available vector network analyser, the S-parameters have been measured upto 20 GHz (20 fc).The state of the art comparison of the LPF shows a high figure of merit equal to 26 250 which is higher than many recently published works.",

keywords = "defected ground structure, equivalent circuit model, harmonic suppression, low-pass filter, phase reversal",

author = "Bhat, {Ubaid Rasool} and Jha, {Kumud Ranjan} and Ghanshyam Singh",

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year = "2018",

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doi = "10.1002/mmce.21235",

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journal = "International Journal of RF and Microwave Computer-Aided Engineering",

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AU - Jha, Kumud Ranjan

AU - Singh, Ghanshyam

PY - 2018/6

Y1 - 2018/6

N2 - In this article, a wide stopband 20 dB harmonically suppressed low-pass filter (LPF) using novel defected ground structures (DGSs) is proposed. The DGSs has been analyzed as a low pass filter which shows a significant harmonics suppression in the stopband. The lumped parameter equivalent of the DGSs has been developed to show its effectiveness. The modified equivalent circuit model of the filter helps in placing the transmission zero near −3 dB cutoff frequency. The LPF is designed on a 0.10 λg× 0.09 λg substrate size where λg is guided wavelength at −3 dB cut-off frequency (fc) equal to1 GHz. The simulation shows a 20 dB harmonic suppression up to 50 fc. The prototype of the LPF has been developed and with the available vector network analyser, the S-parameters have been measured upto 20 GHz (20 fc).The state of the art comparison of the LPF shows a high figure of merit equal to 26 250 which is higher than many recently published works.

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KW - defected ground structure

KW - equivalent circuit model

KW - harmonic suppression

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KW - phase reversal

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ER -

Wide stopband harmonic suppressed low-pass filter with novel DGS

Abstract

Keywords

ASJC Scopus subject areas

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