Compact dual‐notched balanced UWB BPF with folded triple‐mode slotline resonator

Deng, Hong‐Wei; Zhao, Yongjiu; He, Yu Ting; Jia, Shengli; Wang, Min

doi:10.1049/el.2013.4263

Cited by 14 publications

(12 citation statements)

References 7 publications

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“…Balanced UWB BPF with notches is developed based on triple mode slotline resonators and differential microstrip slotline transitions. Dual notched bands are designed by using inverse QWRs coupling stepped impedance microstrip stub loaded in 50 ohm microstrip feed lines [6]. A stepped impedance slotline multimode resonator with microstrip to slotline transitions is used to develop balanced single notch based UWB BPF.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Compact Single and Dual Notch Ultra Wideband Bandpass Filter

Gandamalla¹,

Marathe²,

Kulat³

2018

PIER M

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This paper presents single and dual notch ultra-wideband bandpass filters (UWB BPFs) to mitigate interference with coexisting wireless communication systems in ultra-wideband (UWB). The single and dual notch UWB BPF is developed by using signal interaction concept loaded with stub loaded resonator. The stub loaded resonator creates notches in the passband to avoid the interference with coexisting wireless communication systems. The notch frequency can be placed at the points of interest within passband by selecting a proper length of stub loaded resonator. Transmission zeros are introduced to enhance the selectivity of stopband. It presents UWB BPF with single notch at the frequency of 6.5 GHz and dual notch at the frequencies of 6.3 GHz and 8.0 GHz. The circuit size of proposed filters is 6 mm × 6 mm and 6 mm × 6 mm. The proposed filters exhibit good performance in terms of compact size, good fractional bandwidth and sharp selectivity. All the filters are simulated and fabricated on a Rogers R03010 substrate with relative permittivity of 10.2 and thickness of 1.28 mm. There is good agreement between simulated and measured results.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of Compact Single and Dual Notch Ultra Wideband Bandpass Filter

Gandamalla¹,

Marathe²,

Kulat³

2018

PIER M

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“…Since the first dual‐mode resonator was proposed by Wolff in 1972 [1], the attention of dual‐mode microstrip filters [2–10] has been greatly drawn due to the advantage of size reduction. Stem from the simple dual‐mode resonators, the triple‐mode and multi‐mode ones have been studied for the filter applications [11–17]. Loading a short or an open stub on the centre of the single‐mode resonator and even dual‐mode resonator is widely used to generate an additional resonant mode, thereby obtaining the dual‐mode resonator [3–6] and triple‐mode resonator [12–14], respectively.…”

Section: Introductionmentioning

confidence: 99%

Short‐ and open‐stub loaded spiral resonator and its application in planar microstrip filters

Han

Liu

et al. 2016

IET Microwaves, Antennas & Propagation

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A novel short‐ and open‐stub loaded spiral resonator (SOSL‐SR) is presented and analysed by the odd‐ and even‐mode method to obtain three controllable resonant modes. Therefore, a triple‐mode bandpass filter (BPF) has been designed with good frequency selectivity based on the proposed SOSL‐SR. Then, by dividing these three resonant modes into two passbands or stopbands, a dual‐band BPF and a dual‐band bandstop filter using the proposed SOSL‐SR have been demonstrated. Because of the spiral structure, the sizes of these three designed microstrip filters are reduced significantly. Good agreement between simulated and measured results validates the design concept.

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“…Besides the aforementioned BPF structures, MMRs are often used to design balanced wideband/UWB filters . They are usually arranged symmetric about the plane of symmetry to achieve the required DM and CM performances.…”

Section: Introductionmentioning

confidence: 99%

Balanced UWB BPF with wideband common‐mode suppression

Lee

Hsu

2015

Micro & Optical Tech Letters

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In this letter, a new balanced ultrawideband (UWB) bandpass filter (BPF) is proposed and designed using a slotline resonator (SLR) with radial end‐sections for better wideband response. The SLR is fed by microstrip lines, and the whole BPF circuit is deployed symmetrically across the plane of symmetry to provide balanced operation. When the BPF is excited differentially, the SLR half circuit behaves as a similar resonator of half width, and by locating its first three resonant modes in the passband, the desired UWB response can be achieved. Conversely, while the BPF is in common‐mode (CM) operation, the symmetry plane is virtually open‐circuited, and the SLR is incomplete in structure, rendering CM signal suppression very effective. In this design, bandstop filters are embedded in the feeding lines to increase the upper stopband bandwidth. The achieved performances for this proposed balanced UWB BPF are a 3‐dB fractional bandwidth of 114% and a minimum measured (simulated) in‐band insertion loss of 1.17 (0.92) dB for differential‐mode operation and very good CM rejection with an insertion loss of larger than 25 dB over 1–20 GHz frequency range. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2461–2464, 2015

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Compact dual‐notched balanced UWB BPF with folded triple‐mode slotline resonator

Cited by 14 publications

References 7 publications

Design and Analysis of Compact Single and Dual Notch Ultra Wideband Bandpass Filter

Design and Analysis of Compact Single and Dual Notch Ultra Wideband Bandpass Filter

Short‐ and open‐stub loaded spiral resonator and its application in planar microstrip filters

Balanced UWB BPF with wideband common‐mode suppression

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