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2010•Progress In Electromagnetics Research LettersRequires access

AN ULTRA-WIDEBAND BANDPASS FILTER WITH A NOTCH-BAND AND WIDE STOPBAND USING DUMBBELL STUBS

Li Chen, Feng Wei, Xiao-Wei Shi, Chang-Jia Gao

Open publisher page 13 citations

Abstract

In this paper, an ultra-wideband (UWB) bandpass fllter (BPF) with a notch-band at 5.8GHz is presented. The proposed fllter is constructed with multiple-mode resonator (MMR) using novel dumbbell stubs and one-arm-folded interdigital coupled lines in the input and output sides. The MMR consists of three pairs of shunt dumbbell stubs and a high impedance microstrip line. By adjusting the dimensions of the dumbbell stubs, the resonant modes of MMR are allocated in the UWB band. The arm-folded interdigital coupled lines are used to obtain a notch-band at 5.8GHz. Finally, the proposed UWB BPF is fabricated. The simulated and measured results are in good agreement with each other.

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What this paper is about

In this paper, an ultra-wideband (UWB) bandpass fllter (BPF) with a notch-band at 5.8GHz is presented. The proposed fllter is constructed with multiple-mode resonator (MMR) using novel dumbbell stubs and one-arm-folded interdigital coupled lines in the input and output sides. The MMR consists of three pairs of shunt dumbbell stubs and a high impedance microstrip line. By adjusting the dimensions of the dumbbell stubs, the resonant modes of MMR are allocated in the UWB band. The arm-folded interdigital coupled lines are used to obtain a notch-band at 5.8GHz. Finally, the proposed UWB BPF is fabricated. The simulated and measured results are in good agreement with each other.

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Available abstract

In this paper, an ultra-wideband (UWB) bandpass fllter (BPF) with a notch-band at 5.8GHz is presented. The proposed fllter is constructed with multiple-mode resonator (MMR) using novel dumbbell stubs and one-arm-folded interdigital coupled lines in the input and output sides. The MMR consists of three pairs of shunt dumbbell stubs and a high impedance microstrip line. By adjusting the dimensions of the dumbbell stubs, the resonant modes of MMR are allocated in the UWB band. The arm-folded interdigital coupled lines are used to obtain a notch-band at 5.8GHz. Finally, the proposed UWB BPF is fabricated. The simulated and measured results are in good agreement with each other.

Key concepts: Stopband, Resonator, Dumbbell, Microstrip, Band-stop filter, Band-pass filter, Electrical impedance, Wideband

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AN ULTRA-WIDEBAND BANDPASS FILTER WITH A NOTCH-BAND AND WIDE STOPBAND USING DUMBBELL STUBS — Research Paper | ScholarLens