Articles with "frequency reconfigurable" as a keyword



Compact frequency‐reconfigurable circular patch antenna with varactor diode: Design, tuning, and compactness optimization

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Published in 2024 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.34341

Abstract: In this study, a frequency‐reconfigurable circular patch antenna with a varactor diode has been presented. The proposed antenna has been designed and investigated in four steps: circular patch antenna (Antenna 1), antenna with double slots… read more here.

Keywords: antenna; frequency reconfigurable; varactor diode;

Wireless power transfer system with enhanced efficiency by using frequency reconfigurable metamaterial

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Published in 2022 at "Scientific Reports"

DOI: 10.1038/s41598-021-03570-8

Abstract: The wireless power transfer (WPT) system has been widely used in various fields such as household appliances, electric vehicle charging and sensor applications. A frequency reconfigurable magnetic resonant coupling wireless power transfer (MRCWPT) system with… read more here.

Keywords: system; frequency reconfigurable; mhz mhz; power transfer ... See more keywords

Frequency reconfigurable PIN diode-based Reuleaux-triangle-shaped monopole antenna for UWB/Ku band applications

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Published in 2025 at "Scientific Reports"

DOI: 10.1038/s41598-025-91108-7

Abstract: This paper presents a frequency reconfigurable monopole antenna developed for UWB/Ku band applications. The design employs a microstrip-fed Reuleaux-triangle-shaped patch with a defected ground structure. The antenna exhibits a wide operating bandwidth achieved due to… read more here.

Keywords: reuleaux triangle; band; antenna; frequency reconfigurable ... See more keywords
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Two element MIMO antenna with frequency reconfigurable characteristics utilizing RF MEMS for 5G applications

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Published in 2020 at "Journal of Electromagnetic Waves and Applications"

DOI: 10.1080/09205071.2020.1765883

Abstract: ABSTRACT This paper presents a novel two-element multiple input multiple output (MIMO) reconfigurable antenna that can be switched among 600 MHz, 1.8, 2.4, 3.5, and 5.5 GHz bands. The proposed antenna consists of two semi-circular ring-shaped strip-lines… read more here.

Keywords: mimo antenna; frequency; frequency reconfigurable; antenna ... See more keywords

Four-mode frequency reconfigurable antenna for 28 GHZ and 38 GHZ communication

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Published in 2024 at "Journal of Electromagnetic Waves and Applications"

DOI: 10.1080/09205071.2024.2425697

Abstract: This paper presents a four-mode frequency reconfigurable antenna design for 5G communication systems. The patch antenna approach has been chosen in the design steps and the proposed antenna contains two adjacent patches for corresponding operating… read more here.

Keywords: ghz; reconfigurable antenna; four mode; resonance ... See more keywords

A frequency reconfigurable antireflection metasurface for GPR

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Published in 2024 at "Physica Scripta"

DOI: 10.1088/1402-4896/ad8e12

Abstract: The antireflection metasurface (AM) is employed in ground penetrating radar (GPR) to mitigate the strong reflection of electromagnetic waves at the air-ground interface due to impedance mismatch. However, due to constraints imposed by the relative… read more here.

Keywords: gpr; antireflection; antireflection metasurface; frequency reconfigurable ... See more keywords

A Low-Profile Frequency Reconfigurable Grid-Slotted Patch Antenna

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Published in 2018 at "IEEE Access"

DOI: 10.1109/access.2018.2850926

Abstract: This paper presents a novel low-profile high gain frequency reconfigurable patch antenna with unidirectional radiation pattern by using a grid-slotted patch with tunable varactors loading. The antenna consists of two stacked substrates and three metal… read more here.

Keywords: low profile; grid slotted; frequency; frequency reconfigurable ... See more keywords

Accurate and Robust Characterization of Metasurface-Enabled Frequency Reconfigurable Antennas by Radially Homogeneous Model

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Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2938804

Abstract: A category of frequency reconfigurable antennas realized by rotating mechanically a metasurface mounted atop a source radiator has attracted growing attention. Their electromagnetic properties and range of frequency reconfigurability have, nevertheless, not been satisfactorily studied.… read more here.

Keywords: frequency reconfigurable; metasurface; frequency; model ... See more keywords

A Novel Shape Memory Alloy Actuator-Based Fluidically Programmable Continuous Frequency Reconfigurable Antenna

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Published in 2024 at "IEEE Access"

DOI: 10.1109/access.2024.3493968

Abstract: A new actuation technique is introduced for overcoming the complexity and radiation performance degradation issues of actuators-based reconfigurable antennas. We employ shape memory alloy (SMAlloy) spring actuators to control the positioning of the fluidic channels,… read more here.

Keywords: frequency reconfigurable; shape memory; memory alloy; frequency ... See more keywords

Compact, Frequency-Reconfigurable Filtenna With Sharply Defined Wideband and Continuously Tunable Narrowband States

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Published in 2017 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2017.2736535

Abstract: A compact, frequency-reconfigurable filtenna with sharp out-of-band rejection in both its wideband and continuously tunable narrowband states is presented. It is intended for use in cognitive radio applications. The wideband state is the sensing state… read more here.

Keywords: wideband continuously; narrowband states; compact frequency; narrowband ... See more keywords

A New Design Method for Frequency- Reconfigurable Antennas Using Multiple Tuning Components

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Published in 2019 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2019.2930204

Abstract: Frequency-reconfigurable antennas seem a viable solution to achieve better performance and increased flexibility for integrated mobile phone antennas. Due to the lossy nature of many tunable components, the use of multiple combined tuning components in… read more here.

Keywords: frequency reconfigurable; tuning components; frequency; reconfigurable antennas ... See more keywords