Low pass filters with stepped impedance resonators and DGS structures

Joy, Jilna T.; Sumi, M; Harikrishanan, A. I.

doi:10.1109/icicct.2017.7975159

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…A microstrip LPF with a sharp roll-off using the analytical method is presented in [3]. A compact LPF is presented in [4] based on defected ground structure; however, this method has a complex fabrication process, which could be restrictive in many applications [5]. In [6], an ultra-wide stopband LPF is designed with a sharp response, but this filter has a complicated structure.…”

Section: Introductionmentioning

confidence: 99%

Half-Elliptical Resonator Lowpass Filter with a Wide Stopband for Low Band 5G Communication Systems

et al. 2021

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In this paper, a lowpass filter is designed using half elliptical resonators with a wide stopband. New formulas are presented to achieve a circuit model for the half elliptical resonators used in this work. Additionally, the transfer function and transmission zero equations are used to adjust the frequency of the transmission zeros of the filter. The cut-off frequency of the lowpass filter is 1.26 GHz with a sufficiently large stopband, extending from 1.48 GHz to 20 GHz. The proposed filter’s figure of merit is 62,520, demonstrating its outperformance compared to the state of the art. The filter is implemented on a RT-5880 substrate with a constant dielectric of 2.2, thickness of 31 mil and loss tangent of 0.0009. The LPF was fabricated and tested, showing good agreement between the simulated and measured results.

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Section: Introductionmentioning

confidence: 99%

Half-Elliptical Resonator Lowpass Filter with a Wide Stopband for Low Band 5G Communication Systems

et al. 2021

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A new filtering monopole antenna with wideband harmonic suppression

Wei

Zhai

Zhou

et al. 2018

Micro & Optical Tech Letters

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In this letter, a new integrated filtering monopole antenna with wideband harmonic suppression is presented. In the design of the proposed antenna, a compact multiple harmonic suppression low pass filter is introduced and its stopband characteristic from 5 to 20 GHz is well integrated with the common monopole antenna. The final integrated filtering antenna can work from 2.88 to 4.02 GHz, and its wideband harmonic suppression successfully achieves 5.8 times of the central working frequency. The good performances of the present filtering antenna are shown by the simulated results and measured results, which could be a good candidate for the 5G anti‐interference wireless terminal communication system.

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