Article
Engineering, Multidisciplinary
Ye-Bon Kim, Junhyuk Cho, Han Lim Lee
Summary: This paper proposes an effective planar mmWave switched beamforming antenna array with low complexity and wide beam coverage. The proposed structure eliminates the requirement of a phase-adjustable block and does not require passive hybrid couplers, resulting in a feed network-less antenna that is suitable for mmWave compact antenna applications. A fabricated 1x4 SBTA array at 28 GHz using a conventional PCB process shows good beamforming performance with different main beam directions and gains.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Chang-gui Lu, Xue-fang Hu, Ze-rong Yuan, Yi-ping Cui
Summary: This paper presents a numerical method for nanoparticle transport using the optical force field over a plasmonic Au antenna array. By sequentially changing traps, nanoparticles can be handed off between adjacent traps and trapped and transferred stably. The method shows promising applications in biochemical diagnoses and high-accuracy optical manipulation.
Article
Engineering, Multidisciplinary
Woo-Hee Lim, Seong-Mo Moon, Han Lim Lee
Summary: A high gain circularly-polarized antenna array with a flat panel structure for LEO satellite communication systems is proposed in this paper. The proposed antenna structure can achieve high directivity efficiently and can be easily integrated with beamforming ICs (BFIC), making it a good choice for Ka-band satellite communications. Furthermore, the proposed antenna array can be extended to a larger scale from a base unit in a 2 x 2 sub-array structure. The performance of the proposed antenna array was verified through fabrication and testing, showing good impedance bandwidth, axial-ratio bandwidth, and peak gain.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Zhu Liu, Zhipeng Li, Jinxin Li, Pei Xiao, Yongfeng Qiu, Gaosheng Li, John S. Ho
Summary: This brief introduces a body-wide RF energy harvester based on textile spoof surface plasmon (SSP) antenna array for wearable wireless power transmission. The harvester includes four patch antennas and SSP waveguides integrated with clothing to harvest the incident RF energy. A loop and rectifier are fabricated in the same plane to extract, combine, rectify, and output DC power from the harvested energy. The design shows potential for wirelessly powering wearable sensors.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Multidisciplinary
Dingzhao Chen, Yanhui Liu, Ming Li, Pan Guo, Zhuo Zeng, Jun Hu, Y. Jay Guo
Summary: This paper presents a new concept of a polarization programmable reconfigurable antenna array, which accurately controls the linear polarization of the array radiation pattern through optimization strategy and polarization programming, thereby improving the quality of communication.
Article
Materials Science, Multidisciplinary
Nicolas Lebbe, Agnes Maurel, Kim Pham
Summary: The present study aims to model the optical response of plasmonic metasurfaces made of a periodic arrangement of metallic particles with arbitrary shape and subwavelength dimensions. By combining homogenization with quasistatic plasmonic eigenmode expansion, the metasurface is replaced by a zero-thickness interface associated with frequency-dependent effective susceptibilities. The resulting discontinuities of the fields are responsible for strong interaction with the incoming light at the resonances when the complex permittivity of the metal passes close to the real permittivity of an eigenmode. Our modeling provides a physical picture of resonances in plasmonic metasurfaces, and it allows for a huge decrease in the numerical cost of their computations. In addition, comparisons with direct numerics in two dimensions evidence its predictive force at any incidence, particle shape, and arrangement.
Article
Engineering, Electrical & Electronic
Erio Gandini, Fabrizio Silvestri, Alice Benini, Giampiero Gerini, Enrica Martini, Stefano Maci, Maria Carolina Vigano, Giovanni Toso, Stefania Monni
Summary: This study presents the design and experimental validation of a wide scanning dome antenna that combines a planar phased array with a dielectric lens. The results show a significant directivity enhancement and a scanning range of 70 degrees when the array is combined with the lens. The antenna demonstrates good radiation performance and minimal cross-polarization contribution.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Yong Yang, Yong-Ling Ban, Qingling Yang, Ji-Wei Lian, Qiang Sun, Gang Wu
Summary: A wide-angle scanning circularly polarized (CP) antenna array based on a novel polarizer is proposed in this paper. The proposed hybrid polarizer converts a linear polarization (LP) substrate integrated waveguide (SIW) slot antenna array into a CP antenna array. By taking advantage of the complementary characteristics of the metasurface polarizer and dipole array polarizer for different scanning angles, the proposed hybrid polarizer achieves good impedance matching characteristics in a wide scanning angle range.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Chemistry, Analytical
Seong-Mo Moon, Junhyuk Cho, Han Lim Lee
Summary: In this article, a novel antenna array tailored for mmWave applications is introduced. The array achieves high directivity and augmented gain through the use of a flat-panel radiator, without the need for additional superstrate layers. Testing shows that the array exhibits a narrow beamwidth and minimal gain variation.
Article
Multidisciplinary Sciences
Dylan Tua, Ruiying Liu, Wenhong Yang, Lyu Zhou, Haomin Song, Leslie Ying, Qiaoqiang Gan
Summary: The researchers have developed a compact and lightweight spectrometer that can be used for portable and handheld sensing and analysis applications. Using a single image obtained by an ordinary camera, this system can accurately determine the spectroscopic and polarimetric information of the illumination spectrum. With the help of deep learning algorithms, the optical rotatory dispersion of glucose solutions can be characterized using just a single image.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Artem R. Vilenskiy, Wan-Chun Liao, Rob Maaskant, Vessen Vassilev, Oleg A. Iupikov, Thomas Emanuelsson, Marianna Ivashina
Summary: The approach for designing a beam-steering active phased array of antenna elements with integrated power amplifiers is based on the AiUC concept, involving full-wave analysis and harmonic balance simulations. The method has been demonstrated in a K-band AiUC design example, showing high efficiency and maximum radiated power.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Multidisciplinary Sciences
Zahra Mousavirazi, Mohamed Mamdouh M. Ali, Hassan Naseri Gheisanab, Tayeb A. Denidni
Summary: This paper introduces a new method to simplify the design of Printed Ridge Gap Waveguide (PRGW) structures, addressing the time and energy-consuming simulation process. A wideband PRGW 3 dB hybrid double-box coupler is designed using a suitable boundary condition, providing wide matching and isolation bandwidth with low output amplitude imbalance, distinguishing it from current couplers.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Atom O. Watanabe, Kimiyuki Kanno, Hirokazu Ito, Rao R. Tummala, Madhavan Swaminathan
Summary: This article compares liquid-based photoimageable dielectric (PID) and dry-film dielectric materials in terms of interconnect path losses in mm-wave frequency bands, with results showing that the liquid-based PID has a lower signal loss compared to the dry-film dielectric.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Cornelis R. Wilke, Stefan J. Wijnholds, Jacki Gilmore
Summary: This article discusses the calibration of antenna array receive path gains using self-holography (SH). By analyzing the mathematical model underlying SH and extracting an expression for the signal-to-interference ratio (SIR), the accuracy of gain estimates can be related to the level of interference in the reference signal. Through application to practical examples, accurate assessment criteria have been successfully derived.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Optics
Guang Zhu Zhou, Bao-jie Chen, Geng-bo Wu, Shi-wei Qu, Chi Hou Chan
Summary: This study reports a plasmonic optical leaky-wave antenna with low sidelobe level (SLL). By modulating the electric-field amplitude, the antenna achieves the conversion between guided waves and free-space waves, and reduces the SLL by controlling the aperture field. Experimental results demonstrate high directivity and low SLL, and the antenna allows for arbitrary wavefront shaping.
PHOTONICS RESEARCH
(2023)
