A Novel Dual-Band Bandstop Waveguide Filter Using Split Ring Resonators

Fallahzadeh, S.; Bahrami, Hadi; Tayarani, and Majid

doi:10.2528/pierl09103103

Cited by 46 publications

(28 citation statements)

References 8 publications

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“…They tuned their design by changing the dimensions of the circuit elements. Fallahzadeh et al [4] used split ring resonators (SRRs) to design a dual-band bandstop waveguide filter, and in [5] Abu Safia et al designed a dual-band bandstop coplanar waveguide filter by using uniplanar series connected resonators. None of the previous research has addressed any tuning for DBBSFs' circuits by using tuning elements separately or independently for each band.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Tunable Dual-Band Bandstop Filter (Dbbsf) Using BST Capacitors and Tuning Diode

Aldeeb¹,

Kalkur²

2016

PIER C

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Abstract-A novel approach to design Tunable Dual-Band Band-Stop filters will be presented in this paper. These filters have a new configuration with a coplanar microstrip line loaded with SteppedImpedance Resonators (SIRs). These can be tuned by using tuning elements such as a tuning diode and ferroelectric capacitor. The Dual-Band Band-Stop Filter (DBBSF) and Dual-Band Band-Pass Filter (DBBPF) have become the most attractive circuit components in modern communication devices. Several studies have been done in this area but without tuning. Tuning is important in these circuits because the same circuit could be used in multiple band frequencies by applying a voltage, thus eliminating the need to design new circuits. This approach leads to smaller circuits with higher efficiency and reduced costs. The filters were designed with notch frequencies at 1.5 GHz and 3.5 GHz, and then loaded respectively with Tuning Diode or BST capacitors to compare their performances. The filter circuits were simulated with an Agilent ADS and Matlab program and were fabricated on FR-4 substrates. By loading the resonators with BST capacitors or tuning diodes, with no DC applied voltage, the first and second notch frequency shifts significantly. The application of DC bias to these varactors changes the center frequencies of the dual band filter.

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Section: Introductionmentioning

confidence: 99%

“…In [1][2][3][4][5], the researchers illustrate much research and many designs on this topic. In [1] they used stepped-impedance resonators (SIRs) to design DBBSFs.…”

Section: Introductionmentioning

confidence: 99%

A Novel Tunable Dual-Band Bandstop Filter (Dbbsf) Using BST Capacitors and Tuning Diode

Aldeeb¹,

Kalkur²

2016

PIER C

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“…Many efforts have been made to develop more versatile dual-band components such as antennas [1][2][3][4], filters [5][6][7][8], coupler [9,10] and transformers [11,12]. Meanwhile, the power divider as one of the most important passive circuits has been widely used in microwave and communication systems.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to the Design of Dual-Band Power Divider With Variable Power Dividing Ratio Based on Coupled-Lines

Zhe¹,

Chu²

2010

PIER

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Abstract-This paper presents an approach to the design of a novel dual-band power divider with variable power dividing ratio. To achieve dual-band operation, a novel dual-band quarter-wave length transformer based on coupled-lines is proposed, which is used to replace the quarter-wave length transformer in Wilkinson power divider. The proposed dual-band power divider features a simple compact planar structure with wide bandwidth performance for small frequency ratio. Closed-form design equations with one degree of design freedom are derived using even-and odd-mode analysis and transmission line theory. For verification purpose, power dividers operating at 2.4/3.8 GHz with dividing ratios of 2 : 1 and 1 : 1 are designed, simulated and measured. The simulated and measured results are in good agreement.

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“…Further functionality expansion of the above-mentioned devices is provided by introducing inside of the structure's period the reactive, conductive and polarization-sensitive elements like rods, rings, discs, pins, strips, irises, etc. [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Mutual Conversion of Tm_mn and Te_mn Waves by Periodic and Aperiodic Waveguide Filters Composed of Dense Metal-Strip Gratings

Tuz¹,

Prosvirnin²,

Kazanskiy³

2011

PIER B

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Abstract-The mutual conversion of the TM mn and TE mn waves (m, n = 0) in periodic and aperiodic (fractal-like) stratified waveguide structures composed of dense metal-strip gratings is studied. The stopbands and passbands conditions of Bloch waves, the reflection and transmission spectra of the periodic structure are examined versus the gratings parameters. Peculiarities of the wave localization, selfsimilarity and scalability of both reflected and transmitted spectra of the fractal-like structure are investigated. The appearance of additional peak multiplets in stopbands is revealed and a correlation of their properties with the parameter of grating filling is established.

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A Novel Dual-Band Bandstop Waveguide Filter Using Split Ring Resonators

Cited by 46 publications

References 8 publications

A Novel Tunable Dual-Band Bandstop Filter (Dbbsf) Using BST Capacitors and Tuning Diode

A Novel Tunable Dual-Band Bandstop Filter (Dbbsf) Using BST Capacitors and Tuning Diode

A Novel Approach to the Design of Dual-Band Power Divider With Variable Power Dividing Ratio Based on Coupled-Lines

Mutual Conversion of Tm_mn and Te_mn Waves by Periodic and Aperiodic Waveguide Filters Composed of Dense Metal-Strip Gratings

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