A microstrip bandpass filter with deep rejection and low insertion loss for application at 2.4 GHz useful wireless frequency

Afzali, Behnam; Abbasi, Hamed; Shama, Farzin; Dehdasht-Heydari, Ramin

doi:10.1016/j.aeue.2021.153811

Cited by 17 publications

(4 citation statements)

References 12 publications

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“…Table 2 summarizes the performance comparison of the proposed filter configuration employing cross-loop and square ring slotted patch resonator with the other published works. Among all the reported designs, the filter in this proposed work stands out for its better return loss and more compact size except the one by Afzali et al (2021) in terms of electrical size. The proposed filter also offers the advantage of low insertion loss as compared to all the configurations except those implemented using fractal (Karthie and Salivahanan, 2019), SIW (Muchhal and Srivastava, 2019) and coupled-line (Afzali et al , 2021) resonator configurations.…”

Section: Fabrication and Measurementmentioning

confidence: 99%

“…Among all the reported designs, the filter in this proposed work stands out for its better return loss and more compact size except the one by Afzali et al (2021) in terms of electrical size. The proposed filter also offers the advantage of low insertion loss as compared to all the configurations except those implemented using fractal (Karthie and Salivahanan, 2019), SIW (Muchhal and Srivastava, 2019) and coupled-line (Afzali et al , 2021) resonator configurations.…”

Section: Fabrication and Measurementmentioning

confidence: 99%

“…In the design of BPFs, several dual-mode planar resonator configurations such as coupled-line, ring, loop, patch and fractal structures have been reported in the literature. Sharp rejection and high-selectivity BPFs were reported using the dual-mode characteristics of coupled-line resonator structures (Velidi and Sanyal, 2010; Wu et al , 2015; Chen, 2016; Das and Chatterjee, 2019; Afzali et al , 2021; Alnahwi et al , 2021; Mohamadinia et al , 2021). In this context, resonators using ring (Chiou et al , 2010; Feng et al , 2015), loop (Gorur, 2004; Mo et al , 2009; Wu et al , 2012; Song et al , 2017) and slotted patch (Liu et al , 2019; Neeboriya, 2019; Zhao et al , 2020) structures were also realized for the design of planar filters with perturbed configurations to obtain a dual-mode response.…”

Section: Introductionmentioning

confidence: 99%

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Compact dual-mode microstrip bandpass filter based on slotted square patch resonator

Karthie¹,

J.²,

Yogeshwari³

et al. 2021

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Purpose The purpose of this paper is to present the design of a compact microstrip bandpass filter (BPF) in dual-mode configuration loaded with cross-loop and square ring slots on a square patch resonator for C-band applications. Design/methodology/approach In the proposed design, the dual-mode response for the filter is realized with two transmission zeros (TZs) by the insertion of a perturbation element at the diagonal corner of the square patch resonator with orthogonal feed lines. Such TZs at the edges of the passband result in better selectivity for the proposed BPF. Moreover, the cross-loop and square ring slots are etched on a square patch resonator to obtain a miniaturized BPF. Findings The proposed dual-mode microstrip filter fabricated in RT/duroid 6010 substrate using PCB technology has a measured minimum insertion loss of 1.8 dB and return loss better than 24.5 dB with a fractional bandwidth (FBW) of 6.9%. A compact size of 7.35 × 7.35 mm2 is achieved for the slotted patch resonator-based dual-mode BPF at the center frequency of 4.76 GHz. As compared with the conventional square patch resonator, a size reduction of 61% is achieved with the proposed slotted design. The feasibility of the filter design is confirmed by the good agreement between the measured and simulated responses. The performance of the proposed filter structure is compared with other dual-mode filter works. Originality/value In the proposed work, a compact dual-mode BPF is reported with slotted structures. The conventional square patch resonator is deployed with cross-loop and square ring slots to design a dual-mode filter with a square perturbation element at its diagonal corner. The proposed filter exhibits compact size and favorable performance compared to other dual-mode filter works reported in literature. The aforementioned design of the dual-mode BPF at 4.76 GHz is suitable for applications in the lower part of the C-band.

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Section: Fabrication and Measurementmentioning

confidence: 99%

Section: Fabrication and Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact dual-mode microstrip bandpass filter based on slotted square patch resonator

Karthie¹,

J.²,

Yogeshwari³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…There has been a growing demand for passive filtering microstrip devices with a planar structure and low cost by modern radio frequency (RF) communication systems (Jamshidi, et al, 2023;Yahya, Rezaei and Khaleel, 2021;Rezaei and Yahya, 2022;Yahya, Rezaei and Nouri, 2020;Hosseini and Rezaei, 2020;Fadaee, et al, 2023;Afzali, et al, 2021). A microstrip diplexer is an electronic device that allows two different frequency bands to be transmitted and received simultaneously through a single antenna.…”

Section: Introductionmentioning

confidence: 99%

A Compact Negative Group Delay Microstrip Diplexer with Low Losses for 5G Applications

Nouri,

Yahya,

Rezaei

et al. 2023

ARO

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Microstrip Diplexers play an important role in modern wireless communication systems. In this paper, a novel compact microstrip diplexer based on spiral cells is presented. The proposed resonator primarily consists of two spiral thin lines connected to a pair of coupled lines. This novel resonator is analyzed mathematically to find its behavior and tune the dimensions of the final layout easily. Using the analyzed resonator, two bandpass filters (BPFs) are designed. Then, a novel high-performance microstrip diplexer is obtained by designing and integrating these two BPFs. The center frequencies of the first and second channels of the proposed diplexer are 1.86 GHz and 4.62 GHz, respectively. The proposed diplexer boasts a remarkably small size of 0.004 λg2 and features flat channels with low insertion losses of only 0.048 dB and 0.065 dB for the first and second channels, respectively. The maximum group delays of S21 and S31 are 0.31 ns, 0.86 ns, respectively, which are good values for a modern communication system. Meanwhile, inside its passbands for some frequency ranges, its group delays are negative. Thus, using this diplexer can decrease the signal dispersion. The 1st and 2nd passbands are wide with 47.3% and 47.1% fractional bandwidths (FBW), respectively. Therefore, this diplexer can be easily and successfully used in designing high-performance RF communication systems.

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Design and Performance Analysis of Multi-Band Band Pass Filter Using Meander-Line Resonator

Naganarasaiah Goud,

Rakshitha,

Sahitya

et al. 2024

Lecture Notes in Electrical Engineering

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A microstrip bandpass filter with deep rejection and low insertion loss for application at 2.4 GHz useful wireless frequency

Cited by 17 publications

References 12 publications

Compact dual-mode microstrip bandpass filter based on slotted square patch resonator

Compact dual-mode microstrip bandpass filter based on slotted square patch resonator

A Compact Negative Group Delay Microstrip Diplexer with Low Losses for 5G Applications

Design and Performance Analysis of Multi-Band Band Pass Filter Using Meander-Line Resonator

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