Tunable liquid-crystal millimeter-wave bandpass filter using periodical structure

Yazdanpanahi, M.; Deo, Prafulla; Mirshekar‐Syahkal, D.

doi:10.1109/rws.2014.6830078

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…This process make the substrate out of flatness while ideal model used in the simulation. However, these factors are difficult to be considered in the simulation .…”

Section: Resultsmentioning

confidence: 99%

A compact tunable microwave bandpass filter based on liquid crystal

Jiang

Liu

Yang

et al. 2016

Micro & Optical Tech Letters

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In this Letter, with the application of liquid crystal (LC) an electrically tunable microwave filter has been designed, manufactured, and characterized. The proposed compact filter has been realized on a particularly configured cavity which was constructed with low cost invertedmicrostrip structures and conventional resonance structure. By applying low square-wave (1KHz) voltages, low power consumption is involved. The filter responses have been allocated at k-band of microwave frequency at which band many communications and radar applications applied. The proposed filter occupies a compact area of 19 mm 3 17 mm only. The measured results have shown that the proposed filter realized the central frequency changing from 15.5 GHz to 16.5 GHz continuously with bias voltages changing between 0 and 10 V.ABSTRACT: Wireless power transfer (WPT) in near-field communication (NFC) using current-controlled multi loops with a loaded capacitance is demonstrated in this work. The proposed multi loops antenna

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“…This process make the substrate out of flatness while ideal model used in the simulation. However, these factors are difficult to be considered in the simulation .…”

Section: Resultsmentioning

confidence: 99%

A compact tunable microwave bandpass filter based on liquid crystal

Jiang

Liu

Yang

et al. 2016

Micro & Optical Tech Letters

View full text Add to dashboard Cite

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“…Another advantage lies in the modular enclosure that could be flexibly applied for different core line configurations, with significantly reduced costs for mass production, and cost-effective integration with beam-steering antennas arrays. The configuration also helps pave the way to improve enormous varieties of components and devices, e.g., filters [37], resonators, impedance adapters [20], and couplers. Nevertheless, there remains a lot of work on a shorter latency to enable car radar applications [38] and hence to make this competitive in the current industry landscape.…”

Section: Discussionmentioning

confidence: 99%

Towards 76-81 GHz Scalable Phase Shifting by Folded Dual-strip Shielded Coplanar Waveguide with Liquid Crystals

Li¹

2021

AETiC

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Unconventional folded shielded coplanar waveguide (FS-CPW) has yet to be fully investigated for tunable dielectrics-based applications. This work formulates designs of FS-CPW based on liquid crystals (LC) for electrically controlled 0-360˚ phase shifters, featuring a minimally redundant approach for reducing the LC volume and hence the costs for mass production. The design exhibits a few conceptual features that make it stand apart from others, noteworthy, the dual-strip structure with a simplified enclosure engraved that enables LC volume sharing between adjacent core lines. Insertion loss reduction by 0.77 dB and LC volume reduction by 1.62% per device are reported at 77 GHz, as compared with those of the conventional single-strip configuration. Based on the proof-of-concept results obtained for the novel dual-strip FS-CPW proposed, this work provides a springboard for follow-up investible propositions that will underpin the development of a phased array demonstrator.

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“…In [8], a tunable dual-mode BPF with microstrip square patch resonator is proposed, the design, simulation and characterization of the voltage-controlled BPF based on LC technology. In [9], a tunable LC bandpass filter using microstrip periodical structure for millimeter-waves 978-1-4673-65 44-4/15/$31.00 ©2015 IEEE application is presented.…”

Section: Introductionmentioning

confidence: 99%

A tunable microstrip dual-mode bandpass filter based on liquid crystal technology

Shen

Huang

Shao

2015

2015 IEEE International Conference on Communication Problem-Solving (ICCP)

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In this paper, a novel tunable microwave bandpass filter (BPF) based on liquid crystal (LC) technology is presented.For ease of supplying ac voltages, the proposed filter is achieved by particular configuration schemes with low cost inverted microstrip structure. Two open-circuited stubs are placed inside a meander loop resonator so as to form quarter wavelength resonators, which is good to keep the compact configuration. By taking advantage of the property of LC, central frequency tunability is induced by applying low ac voltages. In the LC default state, the proposed filter has three-pole, it operates at 4.7GHz with about 41 % fractional bandwidth (1.94GHz).

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Tunable liquid-crystal millimeter-wave bandpass filter using periodical structure

Cited by 7 publications

References 9 publications

A compact tunable microwave bandpass filter based on liquid crystal

A compact tunable microwave bandpass filter based on liquid crystal

Towards 76-81 GHz Scalable Phase Shifting by Folded Dual-strip Shielded Coplanar Waveguide with Liquid Crystals

A tunable microstrip dual-mode bandpass filter based on liquid crystal technology

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