Results 21 to 30 of about 271,833 (288)

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

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

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   +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

SRR Slotted Multiband Antenna in Sub 6-GHz for Futuristic Communication [PDF]

open access: yesEAI Endorsed Transactions on Energy Web, 2021
Futuristic communication in sub 6-GHz demands a compact antenna with multi-band resonance. This would be necessary to cater to the need in LTE, Wireless Fidelity, and 5G applications.
Ranjan Mishra   +4 more
doaj   +1 more source

On the Neglect of Local Coulomb Interaction on Oxygens in Perovskites Described by the Multi-band $d-p$ Model [PDF]

open access: yes, 2018
On the example of TiO$_4$ layer (such as realized in Sr$_2$TiO$_4$) we study electronic structure of multi-band $d-p$ models describing transition metal perovskites.
Oleś, A. M., Rościszewski, K.
core   +2 more sources

Photometric redshifts for Quasars in multi band Surveys [PDF]

open access: yes, 2013
MLPQNA stands for Multi Layer Perceptron with Quasi Newton Algorithm and it is a machine learning method which can be used to cope with regression and classification problems on complex and massive data sets.
Brescia, M.   +4 more
core   +3 more sources

Multi-Band Analogue Electromagnetically Induced Transparency in DoubleTuned Metamaterials

open access: yesNanomaterials, 2021
A multi-band analogue electromagnetically induced transparency (A-EIT) metamaterial is proposed. The structure is composed of liquid crystal (LC) layer and a graphene strips layer on both sides of silicon dioxide.
Wei Huang   +3 more
doaj   +1 more source

A Wearable Self-Grounding Slit Antenna for ISM/4G/5G/Bluetooth/WLAN Applications

open access: yesIEEE Access, 2023
This design proposes a self-grounding semi-circular gap dual-band flexible antenna in the context of the rapid development of wireless body area networks.
Zhen Yu   +6 more
doaj   +1 more source

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