Abstract A high-reliability broadband high-linearity down-converter for multi-antenna Global Navigation Satellite System (GNSS) receiver is presented in this paper. Based on direction-of-arrival estimation, the GNSS can separate signals from interfering and suppress harmful wideband radio frequency (RF) interferences. To drive off-chip 50Ω resistive load meet stringent requirements of linearity...

The study examines the characteristics of intergenerational educational mobility among minority Hungarian youth living in Slovakia (Felvidék), Ukraine (Transcarpathia), Romania (Transylvania), Serbia (Vojvodina). topic is important because Hungary there a paucity studies that systematically analyse challenges and coping strategies first-generation students general, or which go beyond aspects wi...

To improve the overall performance of four-wheel steering vehicles under different working conditions and solve problem unbalanced comprehensive control effect a single controller, multi-mode optimal decision system is proposed based on linear 2-DOF dynamic model vehicle, which can make vehicle have better conditions. The composed multiple controllers, in self-tuning dual yaw rate feedback cont...

Quantum mechanics on the moduli space of N supersymmetric Reissner-Nordstrom black holes is shown to admit 4 supersymmetries using an unconventional supermultiplet which contains 3N bosons and 4N fermions. A near-horizon limit is found in which the quantum mechanics of widely separated black holes decouples from that of stronglyinteracting, near-coincident black holes. This near-horizon theory ...

Traditionally, one giraffe species and up to eleven subspecies have been recognized [1]; however, nine subspecies are commonly accepted [2]. Even after a century of research, the distinctness of each giraffe subspecies remains unclear, and the genetic variation across their distribution range has been incompletely explored. Recent genetic studies on mtDNA have shown reciprocal monophyly of the ...

A cost effective method of generating multi-wavelength based on the cascaded four wave mixing effect is experimentally demonstrated. The proposed scheme is free from external tunable laser sources and pump modulators, resulting from the use of a broadened linewidth tunable dual wavelength erbium-doped fiber laser as intracavity pump. In this configuration, the number of four wave mixing cascade...