Results 41 to 50 of about 32,533 (358)
Characterization of dual‐polarized monostatic patch antennas for full‐duplex applications
Engineering Reports, 2020 This paper presents the characterization of two different dual‐polarized monostatic (shared radiator) antennas. As an example, the design and implementation of two dual‐polarized 2.4 GHz patch antennas are presented in this paper for in‐band full‐duplex (
Haq Nawaz, Ahmad U. Niazi
doaj +1 more source
A telemetry antenna system for unmanned air vehicles [PDF]
, 2010 This paper presents a low VSWR high gain telemetry antenna system manufactured for UAVs that provides 360± coverage in the roll plane of the UAV. Proposed telemetry antenna system includes four telemetry antennas, one power divider that has one input and
Dogan, Mustafa +3 more
core
Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere
Advanced Engineering Materials, EarlyView.A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz +4 more
wiley +1 more source
Millimeter‐wave end‐fire dual‐polarized frequency scanning antenna using LTCC technology
Electronics LettersThis letter proposes a millimeter‐wave dual‐polarized (DP) end‐fire frequency scanning antenna utilizing low temperature co‐fired ceramic (LTCC) technology.
Pengfei Yu +5 more
doaj +1 more source
IEEE Access, 2020 In this paper, an 8 × 2-element 60-GHz band circularly polarized post-wall waveguide slot array antenna loaded with dipoles is proposed. The antenna is composed of a feeding circuit, radiating slots on radiating waveguides, and dipoles for ...
Takashi Tomura +2 more
doaj +1 more source
Two-carrier command modulation system [PDF]
, 1973 Two carriers transmit two high-power signals from single transmitter, each phase-modulated by subcarrier which, in turn, is modulated by data bits; switching between two carriers is alternated at high rate.
Easterling, M. F.
core +1 more source
Broadband Slot Feed for Integrated Lens Antennas [PDF]
IEEE Antennas and Wireless Propagation Letters, 2007 This letter presents a new broadband printed antenna based on crossed exponential slot configuration, which presents very good linear polarization. It is compact and especially adequate for integrated lens antenna feeding at millimeter waves and submillimeter waves. The concept is validated with experimental results.
Costa, Jorge R., Fernandes, Carlos A.
openaire +2 more sources
Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio
Advanced Engineering Materials, EarlyView.This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov +4 more
wiley +1 more source
Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena +2 more
wiley +1 more source
Phased-array antenna phase control circuit using frequency multiplication [PDF]
, 1975 Circuit separates out, from multiplied signals, antenna element signals which have desirable phase angles and feeds them to appropriate antenna elements of phased array.
Caron, P. R., Mailloux, R. J.
core +1 more source