Results 11 to 20 of about 289,146 (351)
IEEE Access, 2020 Satellite communication systems require dual-band circularly polarized (CP) waves to integrate receiving and transmit antennas into one dual-band terminal. Polarization converters play an important role in such a scenario to convert the incoming linearly
Ayesha Kosar Fahad +6 more
doaj +1 more source
Design of 94GHz Dual-Polarization Antenna Fed by Diagonal Horn for Cloud Radars
IEEE Access, 2022 In this paper, a 94 GHz dual-polarization high-isolation cassegrain antenna feed by a diagonal horn antenna is designed. The antenna consists of a D = 540 mm main reflector, sub-reflector, and dual-port dual-polarization diagonal horn feed antenna.
Jie Wang +4 more
doaj +1 more source
Antenna-coupled TES bolometer arrays for CMB polarimetry [PDF]
, 2008 We describe the design and performance of polarization selective antenna-coupled TES arrays that will be used in several upcoming Cosmic Microwave Background (CMB) experiments: SPIDER, BICEP-2/SPUD.
Bock, J. J. +16 more
core +6 more sources
Measuring CMB Polarization with ESA PLANCK SubMM-Wave Telescope [PDF]
, 2002 We analyze the polarization properties of the tilted off-axis dual-reflector submillimeter-wave telescope on the ESA PLANCK Surveyor designed for measuring the temperature anisotropies and polarization characteristics of the cosmic microwave background ...
Yurchenko, Vladimir
core +3 more sources
Dual polarization split lenses
Optics Express, 2017 We report the realization of polarization sensitive split lens configurations. While split lenses can be used to easily generate different types of controlled structured light patterns, their realization has been limited so far to scalar beams. Here we propose and experimentally demonstrate their generalization to vectorial split lenses, leading to ...
Aarón Cofré +6 more
openaire +6 more sources
Hydrometeor partitioning ratios for dual-frequency space-borne and polarimetric ground-based radar observations [PDF]
Atmospheric Measurement TechniquesConventional radar-based hydrometeor classification algorithms identify the dominant hydrometeor type within a resolved radar volume, while newer techniques estimate the proportions of individual hydrometeor classes (hydrometeor partitioning ratios, HPRs)
V. Pejcic +4 more
doaj +1 more source
Polarization-independent wavelength conversion at 2.5 Gb/s by dual-pump four-wave mixing in a strained semiconductor optical amplifier [PDF]
, 1996 We give a general expression for the polarization dependence of the four-wave mixing (FWM) efficiency in the dual-pump configuration. This expression, along with some general properties of the FWM susceptibility tensor, is used to propose a simple scheme
Geraghty, David F. +4 more
core +1 more source
Efficient binary phase quantizer based on phase sensitive four wave mixing [PDF]
, 2014 We experimentally demonstrate an efficient binary phase quantizer operating at low pump powers. Phase-sensitive operation is obtained by polarization mixing the phase-locked signal/idler pair in a degenerate dual-pump vector parametric ...
Hesketh, G. +5 more
core +1 more source
Sensors, 2017 It is well known that multipath effect remains a dominant error source that affects the positioning accuracy of Global Navigation Satellite System (GNSS) receivers.
Lin Xie +3 more
doaj +1 more source
Full-Field, Carrier-Less, Polarization-Diversity, Direct Detection Receiver based on Phase Retrieval [PDF]
, 2019 We realize dual-polarization full-field recovery using intensity only measurements and phase retrieval techniques based on dispersive elements. 30-Gbaud QPSK waveforms are transmitted over 520-km standard single-mode fiber and equalized from the receiver
Chen, Haoshuo +5 more
core +2 more sources