A review of wearable antenna

Rais, Nurul Husna Mohd; Soh, Ping Jack; Malek, F.; Ahmad, Shahab; Hashim, Norlezah; Hall, Peter

doi:10.1109/lapc.2009.5352373

Cited by 215 publications

(80 citation statements)

References 13 publications

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“…특히 웨어러블 디바이스는 특성상 인 체에 매우 밀접해 있기 때문에 전자 기기 주변의 필드 분 포가 인체에 의해 영향을 받을 수 있으므로 전자파 적합 성(EMC : Electromagnetic Compatibility)과 전자파의 인체 흡수율(SAR : Specific Absorption Rate)과 같은 항목들이 고려되어야 한다. SAR의 경우에는 SAR 모델링 기법을 통하거나, 시제품을 몸에 부착하여 측정함으로써 웨어러 블 디바이스가 인체로부터 어떤 영향을 받는지 확인할 수 있다 [10], [11] . [12] .…”

Section: ⅰ 서 론unclassified

Metamaterial Based Absorber for Wearable Applications

Lee¹,

Lim²

2017

J. Korean Inst. Electromagn. Eng. Sci.

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In this paper, we propose a textile metamaterial absorber that using screen printing technology. A unit cell of the proposed absorber is motivated from the commercial Chanel logo for wearable applications. The complex impedance of the designed unit cell is analyzed by full-wave simulation. To verify its performance, the proposed metamaterial absorber is fabricated where the silver conductive ink is screen printed on an ordinary textile. From experimental results, the absorptivity of the proposed absorber is around 93 % at 10. . 메타물질 흡수체는 무한히 주기적인 단위구조로 구현되 기 때문에 필요한 공간에 적용시키기 쉽다. 게다가 기존 의 페라이트와 같은 전자파 흡수체와는 달리, 부피가 작 으며 얇은 두께임에도 불구하고 100 %에 가까운 흡수율 을 가질 수 있다 [2] . 이러한 장점을 바탕으로 메타물질 흡 수체는 다양한 응용 분야에 적용되고 있으며, 특히 곡면 형 구조에 적용시키기 위해 PDMS(polydimethylsiloxane) [3] , 필름 [4] , 폴리이미드(polyimide) [5] 와 같은 유연성을 가지는 기판을 활용한 유연한 흡수체가 활발히 연구되고 있다.한편, 웨어러블 디바이스에 적용시키기 위해 직물에 전도성 물질을 사용하여 전자 기기를 구현하는 연구가 이루어지고 있다. 예를 들면 웨어러블 전자소자의 에너지 밀도를 증가시키기 위한 yarn 슈퍼커패시터가 제안되었 으며 [6] , 인간의 생체 신호를 실시간으로 감시할 수 있는 센서가 제안되었다 [7] . 이러한 웨어러블 디바이스는 일반 직물 원단에 전도성 도체 폴리머 섬유를 구현하거나 [8] , ⓒ

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Section: ⅰ 서 론unclassified

Metamaterial Based Absorber for Wearable Applications

Lee¹,

Lim²

2017

J. Korean Inst. Electromagn. Eng. Sci.

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“…The permittivity, ε is a multifaceted parameter and its relative permittivity is formulated as εr : ε = ε0 εr = ε0(ε'r− jε''r) whereas ε 0 represents permittivity of vacuum, which is 8.854 × 10−12 F/m [9]. Dielectric constant of the various flexible substrate lies in the range of 2.2< ε r <12 [10].…”

Section: A Permittivitymentioning

confidence: 99%

Characterizations of Flexible Wearable Antenna based on Rubber Substrate

Dar¹,

Ahmed²,

Raees³

2016

ijacsa

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Abstract-Modern ages have observed excessive attention from both scientific and academic communities in the field of flexible electronic based systems. Most progressive flexible electronic systems require incorporating the flexible rubber substrate antenna operating in explicit bands to offer wireless connectivity which is extremely required by today's network concerned society. This paper characterizes flexible antenna performance under the environments developed by natural rubber as the substrate. Flexible antenna grounded on rubber substrate was simulated using CST microwave studio with diverse permittivity and loss tangent. In our work, prototype antennas were built using natural rubber with different carbon filler substances. This paper reveals advanced flexible substrate effects on antenna quality factor (Q) and its consequences on bandwidth and gain. Such antennas under bending washing environment were also found to perform better than existing designs, showing less change in their gain, frequency shift and impedance mismatch.

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“…그 중 안테나 분야에서 주된 연구 주제로는 입 을 수 있는 의복용 직물 기반의 안테나이다. 직물형 회로 기판(textile substrate) 안테나는 의복의 일부분 으로 구성되어 트랙킹과 내비게이션, 모바일 컴퓨 팅, 개인 안전을 위한 통신 등을 위해 사용하는 것을 주목적으로 한다 [1], [2] .…”

Section: ⅰ 서 론unclassified

Beam Steering Antenna Using Microstrip Patch with U-Slot for Wearable Fabric Applications

Ha¹,

Jung²

2011

The Journal of Korean Institute of Electromagnetic Engineering

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본 논문에서는 직물형 회로 기판상에 설계된 U-슬롯을 갖는 빔 조향(beam steering) 마이크로스트립 패치(microstrip patch) 안테나를 제안하였다. 본 안테나는 직물형 회로 기판 및 의복상에 제작하는 것을 목적으로 설계되 었으며, 동작 주파수 6.0 GHz에서 빔 조향이 가능하도록 설계되었다. AbstractReconfigurable beam steering using microstrippatch antenna with U-slot is proposed for wearable fabric applications. The proposed antenna is manufactured on a fabric substrate, and designed to steer the beam directions at the operation frequency of 6.0 GHz. The U-shaped slot and the indirect feeding-techniques are utilized in designing the proposed antenna. By the configuration of two artificial switches(S0, S1, S2) in between the indirect feed and the antenna patch, the antenna has three beam directions. The maximum beam directions are steerable in the yz-plane(θ=0°, 30°, 331°), and the overall HPBW is 115°. The measured peak gains are 6.11～6.69 dBi.

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A review of wearable antenna

Cited by 215 publications

References 13 publications

Metamaterial Based Absorber for Wearable Applications

Metamaterial Based Absorber for Wearable Applications

Characterizations of Flexible Wearable Antenna based on Rubber Substrate

Beam Steering Antenna Using Microstrip Patch with U-Slot for Wearable Fabric Applications

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