Design of Triple-Mode Ring Resonator for Wideband Microstrip Bandpass Filters

Srisathit, K.; Worapishet, A.; Surakampontorn, W.

doi:10.1109/tmtt.2010.2078295

Cited by 43 publications

(44 citation statements)

References 26 publications

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“…Referring to the comparison made in Table 2, the insertion loss and return loss of the proposed wideband BPF are performing better than [1], [9] and [10]. The proposed BPF that designed at the center frequency of 3 GHz has the insertion loss of 1.2 dB compared to the respective 1.03 dB, 1.62 dB and 1.55 dB of design in [1], [9] and [10].…”

Section: Results and Analysismentioning

confidence: 83%

“…The proposed BPF that designed at the center frequency of 3 GHz has the insertion loss of 1.2 dB compared to the respective 1.03 dB, 1.62 dB and 1.55 dB of design in [1], [9] and [10]. This good performance of insertion loss is accompanying by reasonably good return loss of at least 10 dB across the widest fractional of 136% that covers from 0.92 GHz and 5 GHz.…”

Section: Results and Analysismentioning

confidence: 88%

“…The obtained results indicate that the designed BPF (Type 1) has very minimal insertion loss with a maximum of 1.2 dB and good return loss, which better than 10 dB. The measured performance of this proposed BPF is then compared to [1], [9] and [10], which summarized in Table 2.…”

Section: Results and Analysismentioning

confidence: 99%

“…This good performance of insertion loss is accompanying by reasonably good return loss of at least 10 dB across the widest fractional of 136% that covers from 0.92 GHz and 5 GHz. Even though design in [9] has the best return loss, unfortunately, it is covering the narrowest bandwidth of 27.2 % with worst insertion loss of 1.62 dB. …”

Section: Results and Analysismentioning

confidence: 99%

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Compact Wideband Broadside-Coupled Microstrip-Slot Bandpass Filter for Communication Applications

Seman

Zaidel

Wahid

et al. 2017

IJEECS

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This paper proposes a compact size design of wideband bandpass filter (BPF). The broad-side coupling microstrip-slot technique is used to accomplish a good passband response with very low insertion IntroductionThe immense needs in the direction of high-speed wireless communication connection appear to be never end, despite the current facilitation of the fourth generation (4G) of the wireless communication system. Where, the technology of wireless communication actuates toward fifth generation (5G) with the concept of communication that not restricted to humans but additionally the machine-to-machine and vehicle-to-vehicle, which anticipated by the year 2020. This intense 24/7 desire of the ubiquitous and limitless high-speed communication access to any apparatus at anytime pilots to excessive challenge and problem to the engineers and researchers implying network planning, and radio frequency (RF) and microwave component design. Subsequently, the vital front-end component features in the wireless communication system, includes bandpass filter (BPF). In recent years, it can be seen that various rapid developments in the variety of BPF designs have been reported in the literature [1][2][3][4][5][6][7].In [1], the authors present a theory and direct synthesis of a wideband progressively coupled BPF. The designed filter is claimed adequate to accomplish similar manageable number transmission zeros as that of resonators over the passband. The resonators contain a parallel pair attached capacitive loaded, and grounded inductive stubs are linked over a short section of a transmission line with a certain assigned electrical length, which allow the filter to have a wide range of stopband.Besides, numbers of researchers have also proposed a design of bandpass filter by using defected ground structure (DGS) technique [2][3]. In [2], the design has four coupled Ushaped DGS on the common ground plane. Meanwhile, at the top of the designed filter, shunt coupled T-shaped microstrip lines is added in order to act as an inverter for the filter. As a result, the BPF displays two transmission zeros on either side of the passband, thereby improving the selectivity of the filter on both sides of the passband. Similar to the filter reviewed in [3], the DGS has been implemented into the filter designed whereas the motivation of the DGS technique is impending from the bandgap structures of electromagnetic/photonic (EBG/PBG). In the paper, the authors introduce the function of metamaterials. Metamaterials are employed in order to accomplish a variety of performance-enhancement features. The authors have claimed that the filter design with DGS and metamaterials to be simpler compared to the complex EBGs/PBGs.

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Section: Results and Analysismentioning

confidence: 83%

Section: Results and Analysismentioning

confidence: 88%

Section: Results and Analysismentioning

confidence: 99%

Section: Results and Analysismentioning

confidence: 99%

See 2 more Smart Citations

Compact Wideband Broadside-Coupled Microstrip-Slot Bandpass Filter for Communication Applications

Seman

Zaidel

Wahid

et al. 2017

IJEECS

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“…High-performance wideband and broadband bandpass filters with the characteristics of compact size, wide stopband and high selectivity are essential for modern communication systems [1]. Especially, excellent upper-stopband performance is highly demanded for a wideband and broadband BPF to suppress the unwanted interference or noise [2].…”

Section: Introductionmentioning

confidence: 99%

Compact and Wide Upper-Stopband Triple-Mode Broadband Microstrip BPF

Chen¹,

Zhao²,

Jun³

2012

TELKOMNIKA

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Compact wideband microstrip bandpass filter with wide upper stopband based on coupled-stub loaded resonator

Chen

2014

Int J RF and Microwave Comp Aid Eng

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A novel wideband microstrip bandpass filter (BPF) based on a coupled‐stub loaded resonator (CSLR) is presented in this article. The CSLR is constructed by attaching one short‐circuited parallel coupled microstrip line (PCML) in shunt to a high impedance microstrip line. The filter bandwidth can be conveniently controlled via reasonable adjusting of the impedance of PCML. Moreover, new defected microstrip structures (DMSs) introduced in the PCML functions as a means of adjusting the positions of transmission zeros, created by the PCML. The resonant mode and transmission zero chart are given, indicating that the higher modes could be suppressed by the transmission zeros. Finally, to validate the proposed method, two wideband BPF filters with and without DMSs centered at 3 GHz with 3 dB fractional bandwidth of 87% are designed and fabricated. The measured results show that both the return losses are better than 15.8 dB, while the BPF with DMSs has a −19.4 dB isolation wideband from 1.57 f0 to 4.23 f0. The measured results are in excellent agreement with full‐wave electromagnetic simulation results. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:122–128, 2015.

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Design of Triple-Mode Ring Resonator for Wideband Microstrip Bandpass Filters

Cited by 43 publications

References 26 publications

Compact Wideband Broadside-Coupled Microstrip-Slot Bandpass Filter for Communication Applications

Compact Wideband Broadside-Coupled Microstrip-Slot Bandpass Filter for Communication Applications

Compact and Wide Upper-Stopband Triple-Mode Broadband Microstrip BPF

Compact wideband microstrip bandpass filter with wide upper stopband based on coupled-stub loaded resonator

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