A novel compact CPW Band-stop filter using O-DGS configuration

Sghir, Elmahjouby; Errkik, Ahmed; Zbitou, Jamal; Abdellaoui, Larbi El; Tajmouati, Abdelali; Latrach, Mohamed

doi:10.11591/ijece.v9i6.pp4836-4844

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…The progression of research works on the DGSs in RF and microwave for the last 10 years have shown evidences of improvement towards design realizations and performances. DGS has several advantages on the circuit [12], unwanted frequency suppression [13]- [15], bandwidth enhancement of antennas [16], [17], size compactness [18], [19], high power handling capability [20], isolation in antenna designs [21]- [23], and compensating parasitic capacitance of switching element to improve isolation [24], [25].…”

Section: Introductionmentioning

confidence: 99%

High isolation of SPDT PIN diode switch using switchable dumbbell-shaped DGS in millimeter wave 28 GHz band

Mohd Yasin,

Shairi,

Othman

et al. 2023

Bulletin EEI

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This paper proposes a high isolation of single pole double throw (SPDT) PIN diode switch using switchable dumbbell-shaped defected ground structure (DGS). The proposed SPDT switch was designed for radio frequency (RF) front-end transceiver of antenna array multiple input multiple output (MIMO) in millimeter wave 28 GHz band. The switchable dumbbell-shaped DGS can be switched between allpass and bandstop responses where the bandstop response of the DGS can be utilized as a high isolation in the SPDT PIN diode switch circuit. A simple mathematical analysis is explained in this paper for the bandstop and allpass responses of the switchable dumbbell-shaped DGS. The propose SPDT switch was designed based on Roger RT/Duroid 5880 with 0.254 mm thickness and relative dielectric constant of 2.2. The simulated result showed that the proposed SPDT PIN diode switch produced an isolation of 36.36 dB at 27.3 GHz (center of 28 GHz band), which was 63% higher than the conventional SPDT design.

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Section: Introductionmentioning

confidence: 99%

High isolation of SPDT PIN diode switch using switchable dumbbell-shaped DGS in millimeter wave 28 GHz band

Mohd Yasin,

Shairi,

Othman

et al. 2023

Bulletin EEI

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“…This eliminates the need for via holes and, thereby, simplifies the circuit fabrication. Moreover, this allows simple connection of series as well as shunt components [16][17][18]. Another major advantage of CPW is that it exhibits lower conductor loss than microstrip lines [19,20].…”

Section: Introductionmentioning

confidence: 99%

High Q-Factor Bandstop Filter Based on CPW Resonator Broadside-Coupled to CPW Through-Line

Fahmy¹,

Farahat²,

Hussein³

et al. 2020

PIER B

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High Q-factor bandstop filter based on broadside-coupling between U-shaped coplanar waveguide (CPW) resonator and CPW through-line (CPWTL) is proposed in the present paper. The CPWTL is printed on the top layer of the dielectric substrate whereas the CPW resonator (CPWR) is printed on the bottom layer. Only over very narrow frequency band around the resonant frequency of the CPWR the microwave power flowing in the CPWTL is coupled to (absorbed by) the CPWR leading to a bandstop filter of very high Q-factor. A CPWR with side ground strips of finite width is shown to have much higher Q-factor than that of infinitely extending side ground planes. Owing to the lower profile of the CPW with finite-width, the radiation loss is reduced, and the structure has narrower frequency band for coupling, which results in much higher Q-factor than other published works. The dimensions of the CPWTL are optimized for impedance matching whereas the dimensions of the Ushaped CPWR are optimized to obtain the highest possible Q-factor. The effect of the loss tangent of the dielectric substrate material on the Q-factor is investigated. A prototype of the proposed filter is fabricated and experimentally studied for more understanding of the underlying physical principles of operation and for experimental investigation of the filter performance. The experimental measurements show good agreement with the corresponding simulation results.

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“…Using the two sides of the ground provides additional miniaturization for structure. In both free etched area [9,10], witch here a rectangle DGS and loaded DGS [11,12], by entering the 'e' slot in etching area in the ground of CPW line, an electric and magnetic coupling can be implemented, which allows for an intelligible design of simple an miniaturized structures, such as this proposed low pass filter, and many other structures with the same procedure.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized ultra-wideband coplanarwaveguide lowpass filter with extended stop band

Sghir

Errkik

Zbitou

et al. 2020

IJEECS

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<p class="Default">In this article, we propose a novel design of large rejected band of miniaturized ultra wide band (UWB) of a planar CPW low pass filter “LPF” based on the use of periodic elements of ‘e’ slots. The goal of this work is to develop a new structure of Low Pass Filter with the following criterion: Miniature, Compact and Easy for Fabrication. The Miniaturization of this structure is achieved by entering the 'e' slot in etching area in the ground of CPW line, to save the standard gap of the adapted coplanar line. The designed coplanar LPF is a compact filter having a large band pass and extended stop band, with the possibility to associate easily with others RF and microwave planar circuits. The entire area of the proposed structure of CPW LPF is 14.3x20 mm<sup>2</sup>.</p>

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A novel compact CPW Band-stop filter using O-DGS configuration

Cited by 3 publications

References 8 publications

High isolation of SPDT PIN diode switch using switchable dumbbell-shaped DGS in millimeter wave 28 GHz band

High isolation of SPDT PIN diode switch using switchable dumbbell-shaped DGS in millimeter wave 28 GHz band

High Q-Factor Bandstop Filter Based on CPW Resonator Broadside-Coupled to CPW Through-Line

Miniaturized ultra-wideband coplanarwaveguide lowpass filter with extended stop band

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