نتایج جستجو برای: super wideband

تعداد نتایج: 61135  

Journal: :Progress In Electromagnetics Research C 2016

Journal: :CoRR 2017
Dalin Zhu Junil Choi Robert W. Heath

In this paper, a novel two-dimensional super-resolution angle-of-departure (AoD) and angle-ofarrival (AoA) estimation technique is proposed for wideband millimeter-wave multiple-input multipleoutput systems with cross-polarized antenna elements. The key ingredient of the proposed method is to form custom designed beam pairs, and devise an invertible function of the AoD/AoA to be estimated from ...

2015
Laura Fernández Gallardo Sebastian Möller

Speech communication channels and their components (e.g. codecs) are generally designed for optimum perceived speech quality. However, transmission channels should also preserve principal speaker-specific characteristics that enable acceptable speaker identification performance by end listeners. This paper proposes a first step towards effective approaches for the prediction of the human speake...

A compact printed fractal antipodal bow-tie antenna is designed and implemented to simultaneously cover the operations in the C, X, and Ku-bands. It is demonstrated that by addition of small fractal elements at the sides of hexagonal arms of the bow-tie, a wide operating frequency range of 3.3 to 19.1 GHz can be covered while antenna size is only 30×34×1.2 mm3. In order to match the antenna to ...

Journal: :Electronics 2022

This paper aims to detect early-stage lung tumors in deep-seated and superficial locations, precisely measure the size of detected tumor using non-invasive microwave reflectometry over a super-wideband (SWB) frequency range. Human phantom are modeled multi-layer concentric cylinder structure spherical-shaped inclusions, respectively. Firstly, study on dielectric properties human torso tissues i...

Journal: :Microwave and Optical Technology Letters 2023

In this paper, a modified rhombic-shaped wide-flare two-arm antenna is proposed for super-wideband applications of the next generations mobile technologies. To enhance input impedance and to improve its performance, copper arms are lithographed on dielectric substrate with multilayers fed through wideband balun that designed feed balanced conventional (unbalanced) coaxial line. The fabricated e...

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