Band structures of II-VI semiconductors using Gaussian basis functions with separable ab initio pseudopotentials: Application to prediction of band offsets [PDF]
, 1996 We describe the implementation of a separable pseudopotential into the dual space approach for ab initio density-functional calculations using Gaussian basis functions.
Chen, Xiaojie +4 more
core +1 more source
Behavioral Modeling and Predistortion of Dual-Band Power Amplifiers
IEEE AccessDual-band power amplifiers (PAs) are essential components in modern wireless communication systems. Compared to single band PAs, dual-band PAs enable efficient utilization of spectrum resources with lower capital and operational expenses.
Majid Ahmed +4 more
doaj +1 more source
A 24/77 GHz Dual-Band Receiver for Automotive Radar Applications
IEEE Access, 2019 A fully-integrated 24/77 GHz dual-band receiver is presented for automotive radar applications. The proposed receiver consists of a dual-band LNA, a dual-band sub-sampling PLL, and a wideband mixer, operating at 24 and 77 GHz alternatively.
Xiang Yi +8 more
doaj +1 more source
IEEE Access, 2020 Currently, peak-to-average power ratio (PAPR) degrades the performance of the wireless system and has been widely studied in the orthogonal frequency division multiplexing (OFDM) systems.
Chen Changwei +4 more
doaj +1 more source
Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna
Energies, 2021 In this paper, a dual-band RF wireless power transfer (WPT) system with a shared-aperture dual-band Tx array antenna for 2.4 and 5.8 GHz is proposed. The final configuration of the Tx array, which is made up of 2.4 GHz right-handed circular polarization (
Chan-Mi Song +5 more
doaj +1 more source
T-Duality via Gerby Geometry and Reductions [PDF]
, 2015 We consider topological T-duality of torus bundles equipped with S^{1}-gerbes. We show how a geometry on the gerbe determines a reduction of its band to the subsheaf of S^{1}-valued functions which are constant along the torus fibres.
Bunke, Ulrich, Nikolaus, Thomas
core +1 more source
A Low-Profile Dual-Band Dual-Polarized Antenna With an AMC Reflector for 5G Communications
IEEE Access, 2020 A low-profile dual-band dual-polarized antenna with an artificial magnetic conductor (AMC) reflector is proposed for 5G communications. The antenna consists of a pair of crossed dual-polarized dual-band bowtie dipoles and a dual-band AMC reflector.
Qingchong Liu +3 more
doaj +1 more source
Design of Dual-band Branch-Line Coupler Based on Shunt Open-Circuit DCRLH Cells [PDF]
, 2013 In this article, the shunt open-circuit dual composite right/left-handed (DCRLH) cell is initially proposed and one dual-band branch-line coupler based on the proposed cells is designed.
Bo Tian, Guang-Ming Wang, Ke Lu
core
Dual-Band Quasi-Coherent Radiative Thermal Source
, 2018 Thermal radiation from an unpatterned object is similar to that of a gray body. The thermal emission is insensitive to polarization, shows only Lambertian angular dependence, and is well modeled as the product of the blackbody distribution and a scalar ...
Dai, Jin +12 more
core +1 more source
Ship and Oil-Spill Detection Using the Degree of Polarization in Linear and Hybrid/Compact Dual-Pol SAR [PDF]
, 2012 Monitoring and detection of ships and oil spills using synthetic aperture radar (SAR) have received a considerable attention over the past few years, notably due to the wide area coverage and day and night all-weather capabilities of SAR systems.
Chabert, Marie +2 more
core +3 more sources