Microstrip Filter Designing by SRR Metamaterial

Gupta, Monish; Saxena, Jyoti

doi:10.1007/s11277-012-0986-7

Cited by 12 publications

(7 citation statements)

References 11 publications

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“…SRR could be formed with different configuration like; circular SRR (CSRR) [3], square SRR (SSRR) [4], hexagonal SRR (HSRR) [5], elliptical SRR (ESRR) [6][7]. An electromotive force appears around the SRR due to external magnetic field applying along the z-axis and the coupling between the two rings induces the current from one ring to the other ring through a distributed capacitance formed due to the inter ring spacing [8].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, there have been high demands on designing band stop filter using Split Ring Resonator (SRR) compared to other resonator [8][9]. A planar compact band stop filter using circular SRR is proposed in [8].…”

Section: Introductionmentioning

confidence: 99%

“…A planar compact band stop filter using circular SRR is proposed in [8]. In [9] a square SRR array is designed for a 5.8 GHz band-stop filter.…”

Section: Introductionmentioning

confidence: 99%

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Tunable Elliptical Split Ring Resonator Using Single Varactor Diode

Elkorany

Ahmed

Saleeb

et al. 2018

AEM

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The scope of this paper is to examine the effect of changing the structure of split ring resonator SRR from circular to an elliptical shape. The theoretical analysis of circular SRR (CSRR) is first examined and its results are compared with the simulated ones. Comparison between both configurations is also introduced. The new elliptical SRR (ESRR) can be adapted to operate in a multi-range of frequencies. The effect of gap position in ESRR resonant is also examined. When both gaps are moved but still aligned, the resonant frequency still the same. But when single gap is moved only the resonant frequency in changed to reach its maximum value when both gaps are in the same position. Frequency tunability can be offered by loading only a single varactor diode between the ESRR's metallic rings. The resonant frequency of the ESRR can be controlled by varying the capacitance of the varactor diode. Finite Element Method FEM is used to simulate the proposed structures using Ansys HFSS. A prototype of band notched coplanar waveguide filter loaded with single reconfigurable ESRR is fabricated and measured. A 0.5 pF single capacitor element is used instead of using varactor diode and the measured S 21 is compared with the simulated results. Very good agreement has been obtained between them. A 5.6 GHz and 5.4 GHz notch frequencies in the filter operating frequencies are obtained using ESRR without and with varactor loading, which covers WLAN band.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tunable Elliptical Split Ring Resonator Using Single Varactor Diode

Elkorany

Ahmed

Saleeb

et al. 2018

AEM

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“…Specifically, due to the resonance nature of most metamaterial unit cells, one can achieve compact microwave components, e.g., the bandpass/notch filters [14][15][16][17] and antennas. 18,19 However, most of the reported metamaterials inspired bandpass filters as mentioned above still suffer from large inclusion sizes and complex configurations, which restrict the practical RF/microwave circuit integration and miniaturization applications.…”

Section: Introductionmentioning

confidence: 99%

Systematical analysis for the mixed couplings of two adjacent modified split ring resonators and the application to compact microstrip bandpass filters

Huang

2014

AIP Advances

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In this paper we synthesize a new kind of modified split ring resonator (SRR) and characterize its mixed couplings between two adjacent such SRRs with all the possible arrangements on one side of a conventional dielectric substrate. Based on the analysis of the mixed couplings, the compact microstrip bandpass filters composed of the proposed modified SRRs are systematically analyzed. We found that two designs out of all the cases have quite well bandpass filter characteristics, e.g., low insert loss within the wide passband, sharp reductions and transmission zeros out of the passband, and harmonic suppression characteristics for a wide frequency range. Both experimental demonstrations and numerical simulations are performed to verify the designed filters and the results agree well with each other. Such kind of filter design can be flexibly integrated in the miniaturized radio frequency/microwave circuits.

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“…In particular, recently, the microwave engineering applications of artificial metamaterials have been widely discussed and various novel microwave components, for example, filters [17], shifters [18], multiplexers [19], and power combiners/dividers [20], were reported, since the first realization of metamaterials [3]. The metamaterials based filters are mostly realized by integrating metamaterial resonators into conventional transmission systems so that the filters can pass or stop electromagnetic waves [21], and some metamaterialinspired filters operated at terahertz frequency bands have been reported [22,23]. Specifically, due to the single negative permeability or permittivity characteristics of some metamaterials such as SRRs and electric-LC resonators, the electromagnetic waves or signals cannot be transmitted in such media and therefore the band stop (notch) filters [24][25][26] are achieved.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Notch Filter Based on Twist Split Ring Resonators

Sun

Feng

Huang

et al. 2014

International Journal of Antennas and Propagation

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A novel dual-band rectangular waveguide notch filter is experimentally investigated in this paper. Such filter is realized by integrating two pairs of split ring resonators (SRRs) printed on the two sides of a dielectric slab with twist angles and separated as a distance in the center of the rectangular waveguide. Due to the coupling effects between the twist SRRs and between the original SRRs and their mirror images generated by the metallic walls perpendicular to the E-field direction, it can flexibly contribute two disjunct resonance states and result in the dual-band notch properties. Furthermore, the two resonance frequencies can be controlled by changing the twist angles, resulting in the shifts of notch frequency bands.

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Microstrip Filter Designing by SRR Metamaterial

Cited by 12 publications

References 11 publications

Tunable Elliptical Split Ring Resonator Using Single Varactor Diode

Tunable Elliptical Split Ring Resonator Using Single Varactor Diode

Systematical analysis for the mixed couplings of two adjacent modified split ring resonators and the application to compact microstrip bandpass filters

Dual-Band Notch Filter Based on Twist Split Ring Resonators

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