A Compact Dual-Wideband Bandpass Filter Based on Open-/Short-Circuited Stubs

Liang, Gen-Zhu; Chen, Fu‐Chang

doi:10.1109/access.2020.2968518

Cited by 34 publications

(23 citation statements)

References 21 publications

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“…Filter is one of the key components, so, not only the performance requirements of the filter are greatly improved, but also the demand for their dual-band frequency response characteristics is increased. Therefore, dual-band bandpass filters with good performances and compact sizes have great development prospects [1,2,3,4,5,6,7]. There are plenty of methods that can be adopted to realize the dual-band performance.…”

Section: Introductionmentioning

confidence: 99%

A compact coplanar waveguide dual-band bandpass filters based on defected ground structures

Huang

et al. 2021

IEICE Electron. Express

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A dual-band bandpass filter using coplanar waveguide (CPW) has been proposed in the paper. To generate the first passband, a gap is adopted in the central strip of the CPW main transmission line, and two pairs of spiral-shaped defected ground structures (DGSs) are added to the ground planes. Then, the loaded four L-shaped slots in the central strip of the CPW main transmission line can achieve the second passband. The measured central frequencies of the dual-band bandpass filter are 3.59 GHz and 5.87 GHz. The proposed filter has good dual-passband performance and good stopband suppression.

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Section: Introductionmentioning

confidence: 99%

A compact coplanar waveguide dual-band bandpass filters based on defected ground structures

Huang

et al. 2021

IEICE Electron. Express

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“…The reported filter is designed by using square ring resonators, which are loaded by stubs. In [ 20 ], wideband second- and third-order bandpass filters are designed using open- and short-circuited stubs. The reported filter has a wideband (51.9% in the lower-frequency passband and 23.3% in the high-frequency passband) and low insertion loss of 0.3 dB.…”

Section: Introductionmentioning

confidence: 99%

Multimode HMSIW-Based Bandpass Filter with Improved Selectivity for Fifth-Generation (5G) RF Front-Ends

Iqbal

Tiang

Wong

et al. 2020

Sensors

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This article presents the detailed theoretical, simulation, and experimental analysis of a half-mode substrate integrated waveguide (HMSIW)-based multimode wideband filter. A third-order, semicircular HMSIW filter is developed in this paper. A semicircular HMSIW cavity resonator is adopted to achieve wide band characteristics. A U-shaped slot (acts as a λ/4 stub) in the center of a semicircular HMSIW cavity resonator and L-shaped open-circuited stubs are used to improve the out-of-band response by generating multiple transmission zeros (TZs) in the stop-band region of the filter. The TZs on either side of the passband can be controlled by adjusting dimensions of a U-shaped slot and L-shaped open-circuited stubs. The proposed filter covers a wide fractional bandwidth, has a lower insertion loss value, and has multiple TZs (which improves the selectivity). The simulated response of filter agrees well with the measured data. The proposed HMSIW bandpass filter can be integrated with any planar wideband communication system circuit, thanks to its planar structure.

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“…The filter in [11] also has utilized the SRLR to design a dual-narrow and wide-bandwidths BPF with FBWs of 8% and 39% and multi transmission zeros are produced near each passband edge, hence improving the selectivity of the passbands. A compact wide-band BPF is presented in [12] with wide bandwidths (51.9% at 2.4 GHz and 23.3% at 5.2 GHz) by using the structure of open-/short-circuited stubs that provided the flexibility of manipulating the center frequencies by altering the impedance and the length of the stubs. However, although the previous reported BPF are successfully designed for operating at multiband, but most of them are either large in size or having complex structure.…”

Section: Introductionmentioning

confidence: 99%

Design of A Dual-Wide Band BPF Utilizing Parallel Coupled Microstrip Lines and A Centered Arrow-Shaped Resonator

Khudaraham

Naji²

2020

NJES

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This paper presents a dual wide-band band pass filter (DWB-BPF) by using two parallel, symmetrical micro-strip lines loaded by a centered resonator, consisting of a T- and a triangle-shaped geometry, attached at the lower and upper ends, respectively. The filter reveals good performance and both the passbands can be independently controlled by adjusting specific parts of the filter. The proposed BPF is simulated by using CST microwave studio package and the simulated result is verified experimentally with good agreement between the two results. The fabricated prototype BPF demonstrates two passbands located at 2.3 GHz and 6.35 GHz center frequencies with 39% and 23.6% of 3-dB fractional bandwidth (FBW), respectively and a good insertion and return losses. The designed BPF can be targeted for wireless local area network (WLAN), WIFI and satellite communication systems.

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A Compact Dual-Wideband Bandpass Filter Based on Open-/Short-Circuited Stubs

Cited by 34 publications

References 21 publications

A compact coplanar waveguide dual-band bandpass filters based on defected ground structures

A compact coplanar waveguide dual-band bandpass filters based on defected ground structures

Multimode HMSIW-Based Bandpass Filter with Improved Selectivity for Fifth-Generation (5G) RF Front-Ends

Design of A Dual-Wide Band BPF Utilizing Parallel Coupled Microstrip Lines and A Centered Arrow-Shaped Resonator

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