Novel microstrip bandpass filters based on complementary split-ring resonators

Bonache, Jordi; Gil, Ignacio; García‐García, J.; Martín, Ferran

doi:10.1109/tmtt.2005.861664

Cited by 279 publications

(152 citation statements)

References 17 publications

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“…It has been demonstrated that CSRR etched in the ground plane or in the conductor strip of planar transmission media provides a negative effective permittivity to the structure. CSRR has been successfully applied to the narrow band filters and diplexers with compact dimensions [12,13]. The topology of CSRR DGS is shown in Figure 3(a).…”

Section: Srr Dgsmentioning

confidence: 99%

Design of Novel Dual-Band Bandpass Filter With Microstrip Meander-Loop Resonator and CSRR DGS

Wu¹,

Mu²,

Dai³

et al. 2008

PIER

136

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Abstract-A novel dual-band bandpass filter with meander-loop resonator and complement split-ring resonator (CSRR) defected ground structure (DGS) is proposed in this letter. Microstrip meanderloop resonator and CSRR DGS are operated for respective passbands. Several finite attenuation poles in stopbands are realized to improve the selectivity of the proposed bandpass filter and isolation between the two passbands. Compact size, dual band and high selectivity characteristics are realized by this type of filter structure. The filter is evaluated by experiment and simulation with very good agreement.

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Section: Srr Dgsmentioning

confidence: 99%

Design of Novel Dual-Band Bandpass Filter With Microstrip Meander-Loop Resonator and CSRR DGS

Wu¹,

Mu²,

Dai³

et al. 2008

PIER

136

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“…A ground-plane aperture [5], meandered lines [6], complementary split-ring resonators [7], and grooved substrate [8] have been designed to equalize the modal phase velocities. Strip-width modulation technique is developed to make up wiggly-line, corrugated, grooved or even fractal shape bandpass filters which extend the actual odd mode travelling path toward its even mode counterpart [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Spurious Response Suppression in Hairpin Filter Using DMS Integrated in Filter Structure

Naser‐Moghadasi¹,

Alamolhoda²,

Rahmati³

2011

PIER C

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Abstract-In this paper, several Defected Microstrip Structure (DMS) are used to suppress the first and second spurious responses in microstrip hairpin filters. The DMSs are integrated in filter structure, and therefore this method keeps the filter size unchanged. The DMS interconnection disturbs the current distribution only across the strip, thereby giving a modified microstrip line with certain stop band. The undesired spurious harmonics are suppressed through multiple transmission zeros which are added at these frequencies by designed DMSs. Experimental results verify that 25 dB suppression for the first harmonic and 40 dB suppression for the second harmonic, respectively, without affecting the main passband response. There is a good agreement between the simulated and measured results.

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“…In recent years, Complementary Split Ring Resonator (CSRR) is presented and investigated on the basis of De-fected Ground Structure (DGS) [8]. It has been demonstrated that CSRRs etched in the ground plane or in the conductor strip of planar transmission media (microstrip or CPW) provide a negative effective permittivity to the structure, and signal propagation is precluded (stopband behaviour) in the vicinity of their resonant frequency [9].…”

Section: Introductionmentioning

confidence: 99%

Spurious-response suppression in microstrip Parallel-Coupled bandpass filters by using Defected Microstrip Structures

Naser‐Moghadasi

Alamolhoda

Rahmati³

2011

IEICE Electron. Express

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This paper presents a novel Parallel-Coupled Microstrip Line (PCML) bandpass filter by etching of some slot resonators on the strip for suppressing the first spurious response. These slots perform a serious LC resonance property in certain frequency and suppress the spurious signals. Slot on the strip that is called Defected Microstrip Structure (DMS). The DMS interconnection disturbs the current distribution only across the strip, thereby giving a modified microstrip line with certain stop band and slow-wave characteristics. The measured results show a satisfactory rejection level more than 30 dB at first spurious passband without affecting the passband response. Keywords: Parallel Coupled-Line Filter (PCML), Defected Microstrip Structure (DMS), spurious response suppression Classification: Microwave and millimeter wave devices, circuits, and systems References

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Novel microstrip bandpass filters based on complementary split-ring resonators

Cited by 279 publications

References 17 publications

Design of Novel Dual-Band Bandpass Filter With Microstrip Meander-Loop Resonator and CSRR DGS

Design of Novel Dual-Band Bandpass Filter With Microstrip Meander-Loop Resonator and CSRR DGS

Spurious Response Suppression in Hairpin Filter Using DMS Integrated in Filter Structure

Spurious-response suppression in microstrip Parallel-Coupled bandpass filters by using Defected Microstrip Structures

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