Stacked microstrip antenna with wide bandwidth and high gain

Egashira, Shinji; Nishiyama, Eisuke

doi:10.1109/8.542079

Cited by 136 publications

(58 citation statements)

References 4 publications

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“…Microstructures on oblique and nonplanar surfaces enable unique functionalities in photonics, 1,2 electronics, 3 and microelectromechanics, 4,5 and provide a broad array of interesting applications in high-gain antennas, 6 radio-frequency identification devices, 7 metamaterials, 8 and transformation optics. 9 For instance, combining diffractive microstructures atop a curved refractive surface can minimize aberrations in lenses, in a more compact way compared to the conventional methods by adaptive optics.…”

Section: Introductionmentioning

confidence: 99%

Optical microlithography on oblique and multiplane surfaces using diffractive phase masks

Wang

Menon

2015

J. Micro/Nanolith. MEMS MOEMS

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Abstract. Micropatterning on oblique and multiplane surfaces remains a challenge in microelectronics, microelectromechanics, and photonics industries. We describe the use of numerically optimized diffractive phase masks to project microscale patterns onto photoresist-coated oblique and multiplane surfaces. Intriguingly, we were able to pattern a surface at 90 deg to the phase mask, which suggests the potential of our technique to pattern onto surfaces of extreme curvature. Further studies show that mask fabrication error of below 40-nm suffices to conserve pattern fidelity. A resolution of 3 μm and a depth-of-focus of 55 μm are essentially dictated by the design parameters, the mask generation tool, and the exposure system. The presented method can be readily extended for simple and inexpensive three-dimensional micropatterning. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Introductionmentioning

confidence: 99%

Optical microlithography on oblique and multiplane surfaces using diffractive phase masks

Wang

Menon

2015

J. Micro/Nanolith. MEMS MOEMS

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“…These structures however have inherently a narrow bandwidth which limits their use [1]. Various designs like planar inverted F antennas, stacked patches, defected ground planes and parasitic elements have been proposed for increasing the bandwidth of microstrip antennas [1][2][3][4][5][6].…”

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confidence: 99%

Heterogeneous substrate microstrip antenna With enhanced bandwidth

Bukhari

Whittow

2013

2013 Loughborough Antennas &Amp; Propagation Conference (LAPC)

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“…Normally stacked patch antennas are used to increase the gain and/or impedance of antenna. Egashira and Nishiyama [3] have used the triple stacked circular patches with the dual feed to achieve 10.6 dB, 8.5% AR bandwidth, and 10% impedance bandwidth. However, total thickness of this antenna is more than /2.…”

Section: Introductionmentioning

confidence: 99%