Results 71 to 80 of about 88,827 (197)
A Novel Planar Printed Dual-Band Magneto-Electric Dipole Antenna
IEEE Access, 2017 In this paper, a novel planar printed dual-band magneto-electric dipole antenna is proposed. The proposed antenna is composed of a conventional bow-tie patch as an electric dipole, a semi-circular loop that operates as a magnetic dipole, a coplanar ...
Chen-Yang Shuai, Guang-Ming Wang
doaj +1 more source
Application of adaptive antenna techniques to future commercial satellite communications. Executive summary [PDF]
The purpose of this contract was to identify the application of adaptive antenna technique in future operational commercial satellite communication systems and to quantify potential benefits. The contract consisted of two major subtasks.
Ersoy, L., Lee, E. A., Matthews, E. W.
core +1 more source
Frequency translating phase conjugation circuit for active retrodirective antenna array [PDF]
, 1980 An active retrodirective antenna array which has central phasing from a reference antenna element through a "tree" structured network of transmission lines utilizes a number of phase conjugate circuits (PCCs) at each node and a phase reference ...
Chernoff, R.
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A Loran-C prototype navigation receiver for general aviation [PDF]
Prototype equipment was developed for flight evaluation which provides enroute navigation in both latitude-longitude and rho-theta coordinates. The nonprecision approach capabilities of this equipment was evaluated.
Lilley, R. W., Mccall, D. L.
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An interferometer based phase control system [PDF]
, 1980 An interferometer based phase control system for focusing and pointing the solar power satellite (SPS) power beam is discussed. The system is ground based and closed loop. One receiving antenna is required on Earth.
Ott, J. H., Rice, J. S.
core +2 more sources
Coupling mechanism of a loop‐type ground radiation antenna
ETRI Journal, 2019 The coupling mechanism of a loop‐type ground radiation antenna is investigated in this paper. We use the equivalent circuit model of the antenna and a full‐wave simulation to explain the coupling mechanism of the antenna.
Zeeshan Zahid, Hyeongdong Kim
doaj +1 more source
Suppressed carrier full-spectrum combining [PDF]
A technique to accomplish full spectrum arraying where all the telemetry power is put into the subcarrier sidebands (suppressed carrier) is described. The matched filter needed in each antenna prior to cross correlation for deriving the coherence delay ...
Rogstad, D. H.
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Improved VHF direction finding system [PDF]
, 1969 Direction finding device operating at very high frequencies requires a loop antenna, mechanical rotation, and large structures. The system is applicable to an unmanned configuration.
Graf, E. R., Neff, H.
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A Fundamental Study on Circularly Polarized Double-Loop Antennas with Quasi-Two Sources
Applied SciencesTwo concentric double-loop antennas were analyzed using the moment method to increase the 3 dB axial ratio bandwidth. Each antenna has a driven loop connected to a branched feedline that is vertical to the ground plane.
Kazuhide Hirose +3 more
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NNLO predictions for Z-boson pair production at the LHC
, 2018 We present a calculation of the NNLO QCD corrections to Z-boson pair production at hadron colliders, based on the N-jettiness method for the real radiation parts.
Heinrich, G. +4 more
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