Shape Memory Alloy-Based Frequency Reconfigurable Ultrawideband Antenna for Cognitive Radio Systems

Sumana, L.; Sundarsingh, Esther Florence; Priyadharshini, S.

doi:10.1109/tcpmt.2020.3042738

Cited by 14 publications

(10 citation statements)

References 24 publications

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“…(GHz) Insert loss. (Max) Relative Bandwidth Other Functions ( Yang et al., 2020 ) 3.75–4 2.6dB 12% NO ( Sumana et al., 2021 ) 1.60–2.27 4.2dB 6% NO ( Chen and Chu, 2016 ) 0.98–1.22/1.63–1.95 4dB 5% NO ( Maragheh et al., 2019 ) 1.8–2.5 3.2dB 4% NO ( Song et al., 2019 ) 0.95–1.35 5.6dB 15% NO This work 3.1–4.4 2.8dB 8% YES …”

Section: Resultsmentioning

confidence: 99%

“…However, replicating reconfigurability in the sense of an FPGA is difficult in the microwave frequency domain because in addition to guiding the steady state flow of a signal like an FPGA, the time-varying electromagnetic (EM) field on a high-frequency device needs to be redistributed in space on demand for impedance matching and EM coupling purposes. Current studies of reconfigurable microwave passive devices largely focus on the reconfigurability of a specific performance metric, such as frequency reconfigurability ( Yang et al., 2020 ; Sumana et al., 2021 ; Chen and Chu, 2016 ), bandwidth reconfigurability ( Maragheh et al., 2019 ; Song et al., 2019 ), polarization reconfiguration ( Anantha et al., 2017 ; Li et al., 2020 ), radiation pattern reconfigurability ( Prakash et al., 2021 ; Zainarry et al., 2018 ; Boukarkar et al., 2018 ), etc., while functional reconfiguration is seldom reported.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Redefinable planar microwave passive electronics enabled by thermal controlled VO2/Cu hybrid matrix

Sang¹,

Zhou²,

Xu³

et al. 2022

iScience

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Redefinable planar microwave passive electronics enabled by thermal controlled VO2/Cu hybrid matrix

Sang¹,

Zhou²,

Xu³

et al. 2022

iScience

View full text Add to dashboard Cite

“…Such reconfigurable antennas have been demonstrated in the past for different frequency bands − and achieved varying radiation patterns. − However, these reconfigurability functions rely on extra devices, which increases the complexity and cost of the whole platform. Furthermore, the input impedance of the antennas is predetermined by their design, and an impedance-matching network is required to achieve the best performance.…”

Section: Introductionmentioning

confidence: 99%

Tunable Radio Frequency Antenna Based on Phase Change Materials

2023

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In conventional communication systems, dedicated tunable circuit elements are used to realize different functions and achieve performance metrics. For example, tuning the center frequency or the input impedance of an antenna in a radio frequency (RF) system is performed by complex impedance-matching circuits. In this paper, the antenna utilizes the temperature-induced irreversible mechanical deformation of a shape memory alloy (SMA) as a natural way to tune the antenna’s shape and configuration, thereby providing inherent tunability without bulky circuit elements. This paradigm of material programming for impedance tuning of an SMA-based antenna is validated by both numerical simulation and measurements.

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“…At a certain temperature, the SMA can return to its original shape, which is memorized within the material and can be thermo-mechanically trained [ 33 ]. This thermo-mechanical memory of the SMA was used for the realization of a reconfigurable antenna in related work [ 34 ]. However, it did not demonstrate any additional functionality such as sensing or memory.…”

Section: Introductionmentioning

confidence: 99%

Temperature Sensing Shape Morphing Antenna (ShMoA)

2022

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Devices that can morph their functions on demand provide a rich yet unexplored paradigm for the next generation of electronic devices and sensors. For example, an antenna that can morph its shape can be used to adapt communication to different wireless standards or improve wireless signal reception. We utilize temperature-sensitive shape memory alloys (SMA) to realize a shape morphing antenna (ShMoA). In the designed architecture, multiple conjoined shape memory alloy sections form the antenna. The shape morphing of this antenna is achieved through temperature control. Different temperature threshold levels are used for programming the shape. Besides its conventional use for RF applications, ShMoA can serve as a multi-level temperature sensor, analogous to thermoreceptors in an insect antenna. ShMoA essentially combines the function of temperature sensing, embedded computing for detection of threshold crossings, and radio frequency readout, all in the single construct of a shape-morphing antenna (ShMoA) without the need for any battery or peripheral electronics. The ShMoA can be employed as bio-inspired wireless temperature sensing antennae on mobile robotic flies, insects, drones and other robots. It can also be deployed as programmable antennas for multi-standard wireless communication.

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Shape Memory Alloy-Based Frequency Reconfigurable Ultrawideband Antenna for Cognitive Radio Systems

Cited by 14 publications

References 24 publications

Redefinable planar microwave passive electronics enabled by thermal controlled VO2/Cu hybrid matrix

Redefinable planar microwave passive electronics enabled by thermal controlled VO2/Cu hybrid matrix

Tunable Radio Frequency Antenna Based on Phase Change Materials

Temperature Sensing Shape Morphing Antenna (ShMoA)

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