20 papers · ranked by Valyu relevance
Jie Wang, Shujuan Ding, Na Wei, Jinzhi Bi + 2 more
To suppress non-stationary main-lobe interference, we utilized the waveform information of the transmitted signal and proposed an interference suppression method based on a multi-polarized array without the need for calculating the target parameters. This method calculates the steering vector of the target through…
Xuenan Wang, Hongcheng Zhou, Xinhui Wang, Xia Lei + 5 more
To address the limited overlapping bandwidth across polarization modes in conventional multi-polarized antennas, this paper proposes a wideband multi-polarized microstrip antenna with high polarization isolation. Based on the theory of orthogonal dual-circular polarization synthesis, the proposed antenna achieves…
Wang, Yiqing, Zhou, Jian + 12 more
—Polarimetric phased arrays (PPAs) enhance radar target detection and anti-jamming capabilities. However, the dual transmit/receive (T/R) channel requirement leads to high costs and system complexity. To address this, this paper introduces a polarization-coding reconfigurable phased array (PCRPA) and associated pattern…
Dapeng Chu, Yong Mao, Haoxiang Li, Hong Bie + 2 more
'Shah Nawaz Burokur'] A fixed-frequency beam-scanning leaky-wave antenna (LWA) array with three switchable dual-polarized beams is proposed and experimentally demonstrated. The proposed LWA array consists of three groups of spoof surface plasmon polaritons (SPPs) LWAs with different modulation period lengths and a…
Haifu Zhang, Li-Xin Guo, Shubo Dun, Xiaoming Li + 2 more
This paper presents a compact four-beam dual-polarized phased array with the high performance front-end module based on system-in-package (SiP) technology. By employing high-temperature co-fired ceramic (HTCC) substrates, the proposed design achieves efficient thermal management and high level of integration within a…
Tim Hahn, Dirk Manteuffel
A novel concept for wide-angle scanning is proposed based on multi-mode multi-port antennas. The theory of multi-mode multi-port antennas based on aperture radiators is developed and applied towards the design of an antenna array consisting of multi-mode aperture radiators. An advanced beamforming algorithm is…
J. J. McMahon, James A. Beall, Daniel Becker, H. M. Cho + 8 more
'Rahul Datta' 'Anna E. Fox' 'N. W. Halverson' 'Johannes Hubmayr' 'K. D. Irwin' 'J. P. Nibarger' 'Michael D. Niemack' 'H. E. SMITH'] Keywords mm/sub-mm wave bolometers for astronomy, THz applications Abstract Multi-chroic polarization sensitive detectors offer an avenue to increase both the spectral coverage and…
Haifu Zhang, Li-Xin Guo, Shubo Dun, Xiaoming Li + 4 more
This paper presents a compact multi-beam dual-circularly polarized phased array receiving system operating in the 10.7-12.7 GHz frequency band is designed and implemented, which can generate eight reconfigurable receiving beams with independently configurable polarization modes and scanning directions for each beam. To…
A. Kogut, D. J. Fixsen, Robert Hill
We present the design and performance of a non-imaging concentrator for use in broad-band polarimetry at millimeter through submillimeter wavelengths. A rectangular geometry preserves the input polarization state as the concentrator couples f /2 incident optics to a 2π sr detector. Measurements of the co-polar and…
Mohit Kumar, V. Chandrasekar
—This article develops the multiple-input multipleoutput (MIMO) technology for weather radar sensing. There are ample advantages of MIMO that have been highlighted that can improve the spatial resolution of the observations and also the accuracy of the radar variables. These concepts have been introduced here…
Yuanhao Li, Xiaohan Guo, Kai Zhang, Xiaoyang Li + 4 more
'Ziying Jia' 'Falk Magnus' 'Sergey Shleev'] Bio-inspired imaging polarimeters have significant applications in the field of detecting the polarization state of skylights. The polarization detection principle of polarization detection units in polarimeters is mostly based on the Stokes parameter method. Using the Stokes…
Harsha Avinash Tanti, Abhirup Datta, S. Ananthakrishnan
The estimation of the direction of electromagnetic (EM) waves from a radio source using electrically short antennas is one of the challenging problems in the field of radio astronomy. In this paper we have developed an algorithm which performs better in direction and polarization estimations than the existing…
Shijie Yan, Steven L. Jacques, Jessica C. Ramella-Roman, Qianqian Fang
Monte Carlo (MC) methods have been applied for studying interactions between polarized light and biological tissues, but most existing MC codes supporting polarization modeling can only simulate homogeneous or multi-layered domains, resulting in approximations when handling realistic tissue structures. Over the past…
Authors not listed
We demonstrate the numerical optimization and design of thermal emission metasurfaces that selectively radiate mid-infrared (mid-IR) circularly-polarized light. The proposed three-dimensional chiral structure, formed by the multilayer stacking of antenna elements, inherently exhibits circular polarization selectivity…
Jing Cai, Sergei Nikonov, Alison M. Sweeney
Marine animals with polarization vision are able to effectively detect moving objects in shallow waters, which are illuminated by dynamic fluctuations of downwelling light known as caustics. While behavioral studies across different animal species have demonstrated the support of polarization vision in moving object…
Oumeng Zhang, Weiyan Zhou, Jin Lu, Tingting Wu + 1 more
We report a radially and azimuthally polarized (raPol) microscope for high detection and estimation performance in single-molecule orientation-localization microscopy (SMOLM). With 5000 photons detected from Nile red (NR) transiently bound within supported lipid bilayers (SLBs), raPol SMOLM achieves 2.9 nm localization…
Xining Chen, Mark Andrews
The orientation of sensing molecules on the surface of biosensors is crucial for effective interaction with target analytes, and Raman spectroscopy is a versatile and non-invasive technique used to study molecular configurations at the sub-nanoscale level. This study explores the sensing abilities of an integrated…
Jianwei Chen, Benxi Yao, Zhichao Yang, Wei Shi + 4 more
4Pi single molecule localization microscopy (4Pi-SMLM) with two opposing objectives achieves sub-10 nm isotropic 3D resolution with as few as 250 photons collected by each objective. Here, we developed a new ratiometric multi-color imaging strategy for 4Pi-SMLM which employed the intrinsic multi-phase interference…
James J. Foster, Shelby E. Temple, Martin J. How, Ilse M. Daly + 3 more
In recent years, the study of polarization vision in animals has seen numerous breakthroughs, not just in terms of what is known about the function of this sensory ability, but also in the experimental methods by which polarization can be controlled, presented and measured. Once thought to be limited to only a few…
Authors not listed
The lack of intrinsic mirror symmetry in cavity mirrors poses a significant challenge for most organic chiral materials in generating circularly polarized (CP) lasers. How ever, nonreciprocal chiroptical materials, such as the recently developed organic thin films exhibiting Apparent Circular Dichroism (ACD), provide a…