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A method for equalizing frequency responses of the adaptive antenna array channels is shown. This method does not require a reference signal or some additional antennas. Equalizing is performed on the received signal (like interference signal).
The simulation and experimental results of quadrupole antenna with four power points to create a right-hand circular polarization with respect to the systems IRNSS/GLONASS/GPS were presented.
The superconducting magnets, intended for use in the LHC High Luminosity (HL-LHC) project at CERN are based on Nb3Sn technology. Powering of prototypes of such magnets with up to tens of kilo-Amperes is required for detailed studies of the quench behavior as well as an evaluation of the associated magnet protection equipment. For this purpose an ultra-fast energy extraction system is needed in order...
The steadily increasing demand from the particle physics community for higher beam energies and higher integrated beam luminosity has reinforced the necessity for new accelerator equipment, frequently breaking with conventional technologies. One of the fields where new and innovative engineering is required and where interesting developments are ongoing, is the domain of fast switching of high DC...
The synthesis method of a beam pattern with nulls in specified directions is presented. A solution of the system of equations is used in the synthesis of the beam pattern. The expression for calculating of the beamformer complex weights is derived.
The expression for power pattern of the antenna array with any layout at random errors in the complex weights is obtained. The expression for directivity evaluating is given. Interference suppression performance for adaptive arrays with random errors is shown.
The present paper concerns in-band interference level reduction by means of a spatial adaptive filtering algorithm. The results of measurements standard deviation phase of navigation signals in noise conditions using adaptation algorithm are presented.
More than 600 DC opening switches assure the role of energy extraction in the powering circuits of the bipolar, superconducting beam corrector magnet chains in the LHC collider at CERN. Although the operational experience from several years of extensive use has proven the high reliability of the electro-mechanical breakers, their relatively high need for regular, preventive maintenance and subtle...
The principles of making radiation pattern zeros in the given direction are illuminated. Radiation patterns for the cases of interference coming from different directions and amplitude-phase distributions corresponding to these patterns are given.
CERN is currently commissioning the world's largest particle accelerator, the large hadron collider (LHC). The machine makes extensive use of superconducting technology for magnets, busbars and current leads. It is built in a circular tunnel of 27 km circumference, ready to receive proton beams in the summer of 2008. In case of a resistive transition (quench) in a superconducting magnet or busbar...
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