Enhanced Bandwidth of Band Pass Filter Using a Defected Microstrip Structure for Wideband Applications

Azizi, Sanae; Halaoui, Mustapha El; Kaabal, Abdelmoumen; Ahyoud, Saida; Asselman, Adel

doi:10.11591/ijece.v8i6.pp5260-5267

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…In order to reduce the dimensions of the designed resonator, the DMS technique [12][13][14] is employed to minimize the circuit size by etching slots in the microstrip line which disturbs the current distribution. As shown in figure 6, a slot DMS is integrated into the microstrip line of…”

Section: Jinst 16 P11013mentioning

confidence: 99%

Design of a compact reconfigurable bandpass filter using interdigital capacitor, DMS slots and varactor diode for wireless RF systems

Belmajdoub¹,

Jorio²,

Bennani³

et al. 2021

J. Inst.

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This paper proposes a new design of a reconfigurable bandpass filter based on an interdigital capacitor and varactor diode for wireless and mobile applications. The designed reconfigurable bandpass filter has been implemented on an RT 6010 substrate with a relative dielectric constant of 10.2, thickness of 1.27 mm, and loss tangent of 0.0023. In order to reduce the filter size, the defected microstrip structure (DMS) is used due to its easy design, high compactness, high quality factor and easy integration with other RF devices. The suggested reconfigurable filter has a simple structure with a very attractive compact size of 4.7 × 8.4 mm2, low insertion loss than -1 dB, and tuning range (2–2.6 GHz).

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Section: Jinst 16 P11013mentioning

confidence: 99%

Design of a compact reconfigurable bandpass filter using interdigital capacitor, DMS slots and varactor diode for wireless RF systems

Belmajdoub¹,

Jorio²,

Bennani³

et al. 2021

J. Inst.

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“…We observed that the proposed concept has advantages in terms of availability of synthesis, exhibit transmission zero and narrow bandwidth of less than 6% compared to others. [20] Yes No 10 % [21] Yes No 50 % [22] No Yes 5.69 % [23] No Yes 80 % [24] No Yes 98.73 % [25] No Yes 52.17% [26] No…”

Section: Nd and 3 Rd Order Filter Realizationmentioning

confidence: 99%

Inter-connected coupled lines Resonator topology for bandpass filter application

Hushim¹,

Wahab²,

Zin³

et al. 2020

IJECE

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This paper presents an inter-connected side-shorted coupled-line resonator topology as a base cell. The base cell is built from two single-shorted quarter-wavelength coupled-line sections, connected in series to give a half-wavelength coupled-line that creates a single resonance of bandpass filter response. Higher-order bandpass filter is produced by adding new single-shorted coupled-line sections, cascaded in an inter-connected manner to the base cell. This new topology creates a unique arrangement that caused cross coupling effects between the resonators, resulting to the occurrence of transmission zeros that lead to the improvement of selectivity of the higher order bandpass filter response. For validation of concept, 2nd and 3rd order bandpass filters were fabricated using microstrip technology on Roger 3210 substrate with parameter of Ɛr = 10.2, h = 1.27 mm and tan δ = 3x10-3. The filters were measured and the results show good agreement with simulation results.

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“…However, the reported work in [3] has poor selectivity from passband to stopband region. Other methods such as defected ground structure (DGS) and slotted structure to design of filters have been proposed, but the main problem is complexity of fabrication process [4][5][6][7]. In [4], the bandwidth of filter has been increased by a DGS structure.…”

Section: Introductionmentioning

confidence: 99%

“…Other methods such as defected ground structure (DGS) and slotted structure to design of filters have been proposed, but the main problem is complexity of fabrication process [4][5][6][7]. In [4], the bandwidth of filter has been increased by a DGS structure. The filter based on DGS in [5] has wide stopband.…”

Section: Introductionmentioning

confidence: 99%

Compact wide stopband microstrip lowpass filter using polygon patches and meandered lines

Musavy¹,

Sheikhi²

2020

IJ-ICT

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In this paper, a low pass ﬁlter based on T-Shaped resonator is presented. The T-Shaped resonator consists of meandered lines and rectangular patches. Also, the LC model and transfer function of the proposed resonator is presented. For suppression of spurious harmonics, a bandstop structure consists of hexangular patches and open stubs has been utilized. Finally, the wide stopband microstrip lowpass filter with cutoff frequency 2.72 GHz has been simulated, fabricated and measured. The LPF has good characteristics such as wide stopband and insertion loss lower than 0.18 dB in the passband region. The rejection level is less than -20 dB from 2.98 up to 21.3 GHz. The filter size is 10.5 mm×12.7 mm, or 0.131 λg× 0.158 λg, where λg is the guided wavelength. The measured and simulated results of the filter is in good agreement with each other, which show the merits of low insertion loss and wide stopband.

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Enhanced Bandwidth of Band Pass Filter Using a Defected Microstrip Structure for Wideband Applications

Cited by 7 publications

References 16 publications

Design of a compact reconfigurable bandpass filter using interdigital capacitor, DMS slots and varactor diode for wireless RF systems

Design of a compact reconfigurable bandpass filter using interdigital capacitor, DMS slots and varactor diode for wireless RF systems

Inter-connected coupled lines Resonator topology for bandpass filter application

Compact wide stopband microstrip lowpass filter using polygon patches and meandered lines

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