Kirigami-Based Stretchable Low-Radar-Cross-Section Microstrip Antenna: Design and Analysis

Ji, Zhang; Miao, Wuxia; Zhang, Lamei; Wang, Changguo

doi:10.2514/1.j061343

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…Therefore, flexible and stretchable microstrip antennas, as a promising solution to achieve this goal become a current research hotspot. The general tactics include the utilization of (1) intrinsically stretchable conductive materials (e.g., conductive textiles [3], liquid metals [4,5], and elastomeric composites with conductive fillers [6]) and (2) novel stretchable structures (e.g., wavy/buckled geometries [7], spiral structures [8], serpentine/fractal patterns [9][10][11], and kirigami layouts [12]) that impart stretchable properties to conventional brittle metal materials. For intrinsically stretchable conductive materials, their electrical and radio frequency properties will deteriorate sharply under large mechanical deformations, seriously weakening antenna performance.…”

Section: Introductionmentioning

confidence: 99%

“…For example, a stretchable far-field dipole antenna for communications and a midfield-phased surface designed for wireless power transfer were fabricated and characterized, demonstrating the serpentine structure's broad adaptability to stretchable microwave devices. A stretchable microstrip antenna based on kirigami layouts enables its stretchability up to 17.8% [12]. With the gradual mechanical deployment of the antenna, there is not much change in resonance frequency (4.9 GHz), and the gain is well maintained.…”

Section: Introductionmentioning

confidence: 99%

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Design of a Biaxially Stretchable Microstrip Antenna Enabled by Buckled Au Thin Film on an Elastomeric Substrate

Zhou

2023

J. Phys.: Conf. Ser.

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Wearable wireless biomedical electronics enable monitoring and wireless transmission of patient physiological and pathological signals to provide remote guidance for appropriate diagnosis and treatment. As a core component, the antenna must be flexible and stretchable to adapt to the complex mechanical deformations (e.g., stretching, bending, and twisting) induced by human motions. This work proposes a biaxially stretchable microstrip antenna based on buckled gold thin films bonded on an elastomeric substrate. A simplified analytic model validated by simulations and experiments is established to investigate the biaxial buckling behaviors of the thin films within 10% tensile strains. The properties, including resonance frequency, bandwidth, and radiation pattern of the fabricated biaxially stretchable microstrip antenna under various stretched states, are studied by combining experiments and finite element analysis. The effects of biaxial tensile deformations on the resonance frequency, bandwidth, and radiation properties are discussed. Results show that the designed microstrip antenna has a relatively stable performance under both natural and deformed states within 10% of uniaxial and biaxial tensile strains, which enables the designed antenna to have broad application prospects in wearable wireless medical devices for stable transmission of signals between body-worn sensors and terminals, especially for situations accompanied with complex deformations.

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