Quasi-elliptic ultra-wideband bandpass filter with super-wide stopband

Riaz, Muhammad; Virdee, Bal S.; Shukla, Pancham; Onadim, Muhittin

doi:10.1016/j.aeue.2019.04.011

Cited by 10 publications

(5 citation statements)

References 18 publications

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“…However, the proposed work has lower group delay and smaller size than them with maintaining the insertion lossIL and RL values better than 8,21,22 and near the results of 10 . Although 43,44 have size near the proposed work, the proposed work still has the advantage of the large bandwidth with comparable RL, IL, and the other filter parameters. From the suppression level and upper stopband results point of view, the proposed filter has a relatively high upper stopband and good suppression level compared to the other published works, as shown in Table 3.…”

Section: Integrated Up‐csrr / Crlh Sharp Rool‐off Bpfmentioning

confidence: 76%

Novel configuration of ultra‐wide band uni‐planar configuration of complementary split ring resonator composite right/left‐handed based band pass filter with sharp roll off and good stopband attenuation

Abdalla

Aziz

Arafa

2020

Int J RF Microw Comput Aided Eng

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In this paper, a compact novel simple design of ultra-wide bandpass filter with high out of band attenuation is presented. The filter configuration is based on combining an ultra-wide band composite right/left-handed (CRLH) band pass filter (BPF) with simple uni-planar configuration of complementary split ring resonator (UP-CSRR). By integrating two UP-CSRR cells, the ultra-wideband CRLH filter roll-off and wide stopband attenuation are enhanced. The filter has 3 dB cutoff frequencies at 3.1 GHz and 10.6 GHz with insertion loss equals 0.7 dB in average and minimum and maximum values of 0.48 dB and 1.05 dB, respectively over the filter passband. Within the passband. The transition band attenuation from 3 dB to 20 dB is achieved within the frequency band 1.9 GHz to 3.1 GHz (48%) at lower cutoff and the frequency band 10.6 GHz to 11.4 GHz (7%) at upper stopband. Moreover, the filter has a wide stopband attenuation >20 dB in frequencies 11 GHz to 13.6 GHz (21%) and ends with 3 dB cutoff frequency at 14.8 GHz. Furthermore, the designed filter size is very compact (23 × 12 mm 2) whose length is only about 0.17 λ g at 6.85 GHz. The filter performance is examined using circuit modeling, full-wave simulations, and experimental measurements with good matching between all of them.

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Section: Integrated Up‐csrr / Crlh Sharp Rool‐off Bpfmentioning

confidence: 76%

Novel configuration of ultra‐wide band uni‐planar configuration of complementary split ring resonator composite right/left‐handed based band pass filter with sharp roll off and good stopband attenuation

Abdalla

Aziz

Arafa

2020

Int J RF Microw Comput Aided Eng

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“…Various designs in addition to loop and open loop resonators are proposed in literature. Compact microstrip filters are designed and fabricated in [15][16][17][18][19][20][21][22]. Most of the mentioned filters are designed for a specific frequency band and can't be extended for other frequency bands.…”

Section: Introductionmentioning

confidence: 99%

Long Slot mmWave Low-SLL Periodic-Modulated Leaky-Wave Antenna Based on Empty SIW

Araghi

Khalily

Xiao

et al. 2022

IEEE Trans. Antennas Propagat.

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In this paper, metamaterial loading on loop and open loop microstrip filters is investigated where both rectangular loop and open loop structures are considered. Spiral resonators are loaded on the four sides of the square loop and result in higher size reduction compared to the conventional split ring resonators with identical structural parameters. It is shown that, for both proposed filters, metamaterial loading provides size reduction, due to possessing lower resonant frequency of spiral resonators. The structures are analytically investigated through the transmission matrix method. In the designed rectangular loop filters, there are two nulls on both sides of the pass-band, which provide high out-of-band rejection and is preserved in the corresponding miniaturized metamaterial loaded structures. However open loop resonators provide lower resonant frequencies or more compact size filters. The proposed filter is fabricated and tested and measured results are in good agreement with simulation ones.

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“…Also, the proposed ultra-wideband inductor could be used in the design of a microstrip wideband bandstop filter, 13 tri-bandstop filter, 14 dual-mode tunable bandpass filter, 15 and ultra-wideband bandpass microstrip line filters. 16,17 In the design of ultra-wideband inductors by microstrip lines, it is possible to use the cascaded rectangular microstrip segments with different characteristics impedance. This arrangement introduces the discontinuities in the circuit.…”

Section: Introductionmentioning

confidence: 99%

Planar circuit analysis of ultra‐wideband millimeter‐wave inductor using transmission line sections

Ashrafian

Mohammad-Taheri

Naser-Moghaddasi

et al. 2021

Circuit Theory & Apps

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Regarding the capacitive nature of input/output impedances of millimeterwave amplifiers, it is necessary to utilize wideband inductive elements for the design of input/output impedance matching circuits. In this paper, the design and optimization of an ultra-wideband transmission line inductor with an inductance of less than 100 pH are introduced for using at frequencies above 50 GHz. The reason of using this inductor is its superior performance compared to that of a spiral inductor and single-coil inductor. The inductor consists of three rectangular microstrip line segments with nonequal and variable characteristic impedances. The design is done by calculating the impedance matrix using planar circuit analysis (PCA) based on a planar waveguide model, segmentation/desegmentation methods, and an intelligent algorithm in MATLAB. With this design method, the effect of discontinuities, fringing fields at the edges of the microstrip, and the conductor as well as dielectric losses can be considered while minimizing the dispersion effect. In this study, to reduce the calculation time of the impedance matrix, the doubly infinite series are reduced to a singly infinite series by summing the inner sum for a rectangular segment whose one side is shorted and three other sides are open.

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Quasi-elliptic ultra-wideband bandpass filter with super-wide stopband

Cited by 10 publications

References 18 publications

Novel configuration of ultra‐wide band uni‐planar configuration of complementary split ring resonator composite right/left‐handed based band pass filter with sharp roll off and good stopband attenuation

Novel configuration of ultra‐wide band uni‐planar configuration of complementary split ring resonator composite right/left‐handed based band pass filter with sharp roll off and good stopband attenuation

Long Slot mmWave Low-SLL Periodic-Modulated Leaky-Wave Antenna Based on Empty SIW

Planar circuit analysis of ultra‐wideband millimeter‐wave inductor using transmission line sections

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