Effects of narrow slits on frequency response of a microstrip square loop resonator and dual‐mode filter applications

Karpuz, Ceyhun; Görür, Ali Kürşad

doi:10.1002/mop.27237

Cited by 6 publications

(6 citation statements)

References 7 publications

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“…To apply the proposed multiband even–odd mode impedance formulas, a dual‐mode dual‐band microstrip bandpass filter is designed and simulated. The proposed filter is designed by combining the procedures introduced in . In , a dual‐mode bandpass filter is designed using a square loop resonator with narrow slits located at the arms of the resonator.…”

Section: Dual‐mode Dual‐band Microstrip Bandpass Filter Applicationsmentioning

confidence: 99%

“…The proposed filter is designed by combining the procedures introduced in . In , a dual‐mode bandpass filter is designed using a square loop resonator with narrow slits located at the arms of the resonator. In addition, a dual‐band bandpass filter is designed using nested square loop resonators with different electrical lengths in .…”

Section: Dual‐mode Dual‐band Microstrip Bandpass Filter Applicationsmentioning

confidence: 99%

“…By this way, each passband can be constructed by own impedance/admittance formulas without affecting the other passbands. For the validation of the proposed model, a dual‐mode dual‐band bandpass filter is designed using two nested dual‐mode square loop resonators having narrow slits in a similar manner with . Designed filter has also been fabricated and measured for the verification of theoretical and simulation results.…”

Section: Introductionmentioning

confidence: 99%

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Even–odd mode analysis for multiband bandpass filters having multiple resonators and its microstrip implementations

Karpuz

Görür

2014

Micro & Optical Tech Letters

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This article presents even–odd mode impedance/admittance descriptions for dual‐mode multiband filters having independently controllable passbands formed by multiple resonators in different electrical lengths. Even–odd mode impedance models of dual‐mode ring resonators are used. Using these models, conventional equivalent admittance formulas are revised with a frequency dependent separation coefficient to obtain the desired in‐band return loss levels by keeping each passband from the effects of other passbands. As the proposed method can be applied for dual‐mode multiband filters, a dual‐mode dual‐band microstrip filter is designed, simulated, and fabricated. Designed filter has two dual‐mode resonators in different electrical lengths which are comprised by square loop resonators having narrow slits. Fabricated dual‐band filter has also been measured in a good agreement with the simulated results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2664–2667, 2014

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Section: Dual‐mode Dual‐band Microstrip Bandpass Filter Applicationsmentioning

confidence: 99%

Section: Dual‐mode Dual‐band Microstrip Bandpass Filter Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Even–odd mode analysis for multiband bandpass filters having multiple resonators and its microstrip implementations

Karpuz

Görür

2014

Micro & Optical Tech Letters

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“…Simulation and measurement frequency responses are in good agreement. In [12], novel microstrip bandpass filters using dual-mode square loop resonator with mitered bends have been designed. A parametric study to determine the effect of narrow slits on filter responses has been conducted in this study.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Dual-Mode Microstrip Bandpass Filter Based on SIR Technique

Mezaal

Ali

2016

PLoS ONE

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In this paper, a new bandpass filter design has been presented using simple topology of stepped impedance square loop resonator. The proposed bandpass filter has been simulated and fabricated using a substrate with an insulation constant of 10.8, thickness of 1.27mm and loss tangent of 0.0023 at center frequency of 5.8 GHz. The simulation results have been evaluated using Sonnet simulator that is extensively adopted in microwave analysis and implementation. The output frequency results demonstrated that the proposed filter has high-quality frequency responses in addition to isolated second harmonic frequency. Besides, this filter has very small surface area and perceptible narrow band response features that represent the conditions of recent wireless communication systems. Various filter specifications have been compared with different magnitudes of perturbation element dimension. Furthermore, phase scattering response and current intensity distribution of the proposed filter have been discussed. The simulated and experimental results are well-matched. Lastly, the features of the proposed filter have been compared with other designed microstrip filters in the literature.

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“…In microwave literature, many design procedures for dual‐mode bandpass filters have been studied with various configurations especially using dual‐mode resonators . Also, there are many ways for designing dual‐band bandpass filters with dual‐mode resonators . In , a dual‐mode dual‐band microstrip bandpass filter design has been achieved using open‐circuited stubs inside a square loop resonator.…”

Section: Introductionmentioning

confidence: 99%

Dual-mode dual-band microstrip bandpass filter with controllable center frequency

Karpuz

Görür

Şahin

2015

Microw. Opt. Technol. Lett.

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In this letter, a dual‐mode dual‐band microstrip bandpass filter design with center frequency control methodology is presented by using dual‐mode meandered loop resonator. Center frequencies of the passbands can be controlled by changing the connection points of internally located square loop loading elements without changing the total surface area. These loading elements are also useful to obtain a compact configuration. In addition, while the first passband has two reflection zeros, the second passband has one reflection zero, as it is obtained from the harmonic of the first passband. Therefore, degenerate modes of the first passband can be excited by a perturbation element. Using patch or corner cut perturbation elements, elliptical and linear phase filtering characteristics can be obtained in the first passband, respectively. Two dual‐mode microstrip bandpass filters having elliptical and linear phase filtering characteristics were designed, fabricated, and measured. Measured results are in a very good agreement with the simulated results. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:639–642, 2015

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Effects of narrow slits on frequency response of a microstrip square loop resonator and dual‐mode filter applications

Cited by 6 publications

References 7 publications

Even–odd mode analysis for multiband bandpass filters having multiple resonators and its microstrip implementations

Even–odd mode analysis for multiband bandpass filters having multiple resonators and its microstrip implementations

Investigation of Dual-Mode Microstrip Bandpass Filter Based on SIR Technique

Dual-mode dual-band microstrip bandpass filter with controllable center frequency

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