Compact dual-band bandpass filter using defected microstrip structure for GPS and WLAN applications

Liu, H.W.; Zhang, Z.C.; Wang, S.; Li, Zhu; Guan, Xuehui; Lim, Jeong-Taek; Ahn, Dal

doi:10.1049/el.2010.2146

Cited by 30 publications

(17 citation statements)

References 6 publications

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“…In [6,7], stepped impedance resonators have been applied to enhance the selectivity of the filters. The defected ground structure (DGS) [8,9,10] and defected microstirp structure (DMS) [11] have been also reported. Meanwhile, the dual-band using the quarter-wavelength resonator as the loaded stub and the split resonator has been analyzed in [12,13].…”

Section: Introductionmentioning

confidence: 98%

A controllable compact dual-band bandpass filter using loaded open-loop resonators

Gaoding

2016

IEICE Electron. Express

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Abstract:A compact composite open-loop resonator based dual-band band-pass filter (BPF) with high selectivity is presented. The outer openloop and inner open-loop are corresponding to the first and second frequency passbands, respectively. The middle ring is used as the couping ring. The analysis of these open-loops has also been performed to indicate the resonance condition of the proposed filter. To demonstrate the proposed concept, the filter is fabricated with a compact size, which is 10.20 mm × 18.32 mm. The microstrip line filter is validated and measured with two passbands centered at f 1 = 3.00 GHz and f 2 = 5.34 GHz. The simulation and measured results are in good agreement.

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Section: Introductionmentioning

confidence: 98%

A controllable compact dual-band bandpass filter using loaded open-loop resonators

Gaoding

2016

IEICE Electron. Express

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“…Dual band bandpass (DBBP) filters find wide application in telecommunications systems such as WiFi, where more than one band of frequencies is of interest. Conventional approaches to the realization of DBBP filters make use of a variety of structures, such as comblines , signal interference , C‐sections , spurlines , and separate signal paths . An extensive class of structures make use of coupled stepped impedance resonators or coupled lines , multimode resonators or various stepped stubs or stepped impedance resonators .…”

Section: Introductionmentioning

confidence: 99%

An asymmetrical dual band bandpass filter

Malherbe

2016

Micro & Optical Tech Letters

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A dual band bandpass filter consisting of a cascade of unit elements and shunt connected stepped open and stepped short circuited stubs, is described. The dual passbands can have unequal, asymmetrical width; the stop‐bandwidth between the desired bands and the harmonic upper bands is substantially increased. A prototype filter that finds application in communication systems is developed. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:163–168, 2017

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“…Many dual-band BPFs with normal conductor and various types of resonators have been reported [1][2][3][4][5]. However, these filters are suffer from the high insertion loss and gently skirt characteristics because of the large surface resistance and low filter orders.…”

Section: Introductionmentioning

confidence: 99%

Design of dual-band superconducting bandpass filter using dual-mode hairpin ring resonator

Ren

Liu

Guan

et al. 2015

2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)

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A novel hairpin ring resonator (HRR) is proposed in this paper. The HRR can generates two controllable resonant modes and its mechanism is analyzed. Then, a fourth-order dualband high-temperature superconducting (HTS) bandpass filter (BPF) is designed by cascading four HRRs. The HTS filter operating at 1.9 GHz and 2.6 GHz is fabricated on the MgO substrate with double-side coated YBCO thin films. The designed filter has a compact size (occupies only 17.6 mm × 14 mm). The measured results show high performance and agree well with the simulated ones.Keywords-bandpass filter (BPF); dual-band; hairpin ring resonator (HRR); high-temperature superconducting (HTS)

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Compact dual-band bandpass filter using defected microstrip structure for GPS and WLAN applications

Cited by 30 publications

References 6 publications

A controllable compact dual-band bandpass filter using loaded open-loop resonators

A controllable compact dual-band bandpass filter using loaded open-loop resonators

An asymmetrical dual band bandpass filter

Design of dual-band superconducting bandpass filter using dual-mode hairpin ring resonator

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