Design of Ultra-Wideband Bandpass (UWB) Filter with Enhanced Couplings by Using Lumped Capacitors

Ye, Jundong; He, L.; Zhong, Xingjian; Qu, Dexin

doi:10.1109/icmmt.2018.8563906

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…The compensated inductors (𝐿 = 0.2 nH) were generated with the transmission line. The cut-off Table 3 provides a comparison with other UWB techniques [26][27][28]. The previous studies are chosen from the requirements of the Federal Communications Commission.…”

Section: Resultsmentioning

confidence: 99%

“…An intentional UWB device is specified as the device that has the bandwidth equal to or more than 20% of the center frequency or which has the bandwidth equal to or more than 0.5 GHz. Additionally, various UWB filter design techniques have been proposed to meet the required UWB frequency mask (3.1 to 10.6 GHz) [28]. In [26], the circular ring resonator was applied to the BPF.…”

Section: Resultsmentioning

confidence: 99%

“…In [27], the coupled-line resonator was used to design the UWB filter. Additionally, in [28], lumped capacitors were added in the UWB filter. From Table 3, it is found that the proposed UWB-BPF provides the widest bandwidth (107%) compared to other techniques and there is the electrical length equation for the UWB design.…”

Section: Resultsmentioning

confidence: 99%

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Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

2021

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An ultra-wideband bandpass filter (UWB-BPF) using inductively compensated parallel-coupled lines (ICPCL) is presented in this article. It consists of three circuits: a high-pass filter (HPF), a lowpass filter (LPF), and a transmission line. The HPF and the LPF are independently synthesized from the ICPCL. The proposed filter can suppress unwanted frequencies in the upper stopband and increase the skirt slope of the frequency response in the transition bands. The fabricated UWB-BPF with compact size provides good passband performances, with insertion loss of better than −0.49 dB and return loss of better than −12 dB in the frequency range of 2.92–10.95 GHz (the bandwidth of 8.03 GHz). The 107% bandwidth is achieved. In addition, the proposed filter can suppress the spurious frequencies at 2f0, which is greater than 30 dB. The measured results accord well with the simulation results. The novelty of the paper is the introduction of the ICPCL for the construction of the compact UWB-BPF.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

2021

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Optimal Synthesis of Band-Pass Filters on Coupled Microstrip Lines

Karpukov,

Voskoboynik,

Savchenko

et al. 2024

2024 IEEE 7th International Conference on Smart Technologies in Power Engineering and Electronics (STEE)

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Ultra-Wideband Bandpass Filters Using Tapered Resonators

2022

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In this paper, ultra-wideband bandpass filters using tapered transmission line resonators are presented. The proposed filters are based on short-circuited tapered transmission line stubs. The use of tapered transmission resonators resulted in a noticeable length reduction, a wider controlled operational bandwidth, and better stopband characteristics for filter applications. Three filters are designed with different tapered ratios using exponential tapered transmission line resonators. The other three filters are also designed using equivalent linear tapered transmission line resonators. The designed filters are simulated and fabricated on a Roger RT5880 substrate with a 2.2 relative permittivity and 0.78 mm thickness. Approximately, the same performance is obtained using either exponential or linear tapered resonators. A good agreement between the simulated and measured results is reported. The realized 112.22% fractional bandwidth filter has a return loss (S11) better than 17 dB and an insertion loss (S12) better than 1 dB over the entire UWB spectrum. Notable improvements in stopband characteristics are also achieved.

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Design of Ultra-Wideband Bandpass (UWB) Filter with Enhanced Couplings by Using Lumped Capacitors

Cited by 3 publications

References 9 publications

Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

Design of a Compact Ultra-Wideband Bandpass Filter Using Inductively Compensated Parallel-Coupled Lines

Optimal Synthesis of Band-Pass Filters on Coupled Microstrip Lines

Ultra-Wideband Bandpass Filters Using Tapered Resonators

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