Results 11 to 20 of about 4,737,935 (303)

Multi-band antenna for different wireless applications [PDF]

open access: yes, 2009
A small multi-band compact antenna is presented. The antenna is designed on Roger RT/duroid 5880 with dielectric constant 2.2, multi-band operations is achieved by inserting a slot on the top patch. The antenna has wide impedance bandwidth at 1.2, 1.6, 2.
AbuTarboush, HF   +2 more
core   +5 more sources

Asynchrony in multi-band speech recognition [PDF]

open access: yes2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002
In this paper, an algorithm for continuous speech recognition systems based on the Multi-Band principle is proposed. This algorithm allows the bands to be asynchronous and has a practical complexity that is very close to the complexity of the classical Viterbi algorithm.
Cerisara, Christophe   +2 more
openaire   +2 more sources

An X/Ku Dual-Band Switch-Free Reconfigurable GaAs LNA MMIC Based on Coupled Line

open access: yesIEEE Access, 2020
This article presents an X/Ku dual-band switch-free reconfigurable GaAs low-noise amplifier (LNA) realized by inter-stage and output-stage coupled lines.
Chunshuang Xie, Zhongjun Yu, Cheng Tan
doaj   +1 more source

A Novel Multi-Band Reduced Sampling Rate and I/Q Compensation Technique for RF Power Amplifiers

open access: yesIEEE Access, 2019
In this paper, a novel multi-band reduced sampling rate technique is proposed for power amplifier (PA) linearization system. It is used to enhance performance and reduce hardware costs in spectrum aggregation discontinuous broadband systems and ...
Jingmei Zhao, Linbo Zhai, Feng Yang
doaj   +1 more source

High Performance Receiver Design for RX Carrier Aggregation

open access: yesJournal of Low Power Electronics and Applications, 2017
Carrier aggregation is one of the key features to increase the data rate given a scarce bandwidth spectrum. This paper describes the design of a high performance receiver suitable for carrier aggregation in LTE-Advanced and future 5 G standards.
Jusung Kim   +4 more
doaj   +1 more source

Multi-Band Multi-Functional Metasurface-Based Reflective Polarization Converter for Linear and Circular Polarizations

open access: yesIEEE Access, 2021
In this paper, we present a simple metasurface based multiband reflective polarization converter for both linear and circular polarizations. We show that, on one hand, the proposed structure can convert the polarization of linearly polarized waves to the
Rahul Dutta   +3 more
doaj   +1 more source

Holographic multi-band superconductor

open access: yesPhysics Letters B, 2011
We propose a gravity dual for the holographic superconductor with multi-band carriers. Moreover, the currents of these carriers are unified under a global flavored SO(3) symmetry, which is dual to the bulk SO(3) gauge symmetry. We study the phase diagram of our model, and find it qualitatively agrees with the one for the realistic 2-band superconductor,
Huang, Ching-Yu   +2 more
openaire   +3 more sources

Complementary Split Ring Resonator-Inspired Antenna for Wearable Multiband Applications Using Biodegradable Polylactic Acid [PDF]

open access: yesMechanics of Advanced Composite Structures
In this manuscript, replacing traditional antennas with biodegradable PLA substrates aims to reduce e-waste in today's technologically advanced age.
saranya Srinivasan   +3 more
doaj   +1 more source

Investigation of a Flexible Downstream Scheme for Sampling Rate and Bandwidth Reduction in Short Reach Communication Systems

open access: yesIEEE Access, 2020
We demonstrate a cost- and spectrum-effective orthogonal frequency-division multiple access passive optical network downstream scheme based on multi-band and modified sub-Nyquist sampling over transmission reach of 20km.
Yupeng Li   +3 more
doaj   +1 more source

Multi‐band FMRI compromises detection of mesolimbic reward responses

open access: yesNeuroImage, 2021
Recent innovations in Functional Magnetic Resonance Imaging (FMRI) have sped data collection by enabling simultaneous scans of neural activity in multiple brain locations, but have these innovations come at a cost?
Tara Srirangarajan   +4 more
doaj   +1 more source

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