Essays about: "Circular Polarisation"

Showing result 1 - 5 of 6 essays containing the words Circular Polarisation.

  1. 1. Design of an Array of Patch-elements With a Band-pass Frequency Selective Surface Hybrid Radome : Analysis and characterisation of a frequency selective surface and a phased array antenna

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Curt-Herman Normark Frisk; [2022]
    Keywords : Frequency Selective Surface; Microstrip Patch Element; Circular Polarisation; Phased Array Antenna; Single Feed; Frekvensselektiv Yta; Mikrostrip Patchelement; Cirkulär Polarisering; Fasstyrd Gruppantenn; Single-matad;

    Abstract : A circular polarised phased array antenna and a frequency selective hybrid radome are designed and evaluated. The antenna system is well suited as a part of a communication link between platforms with a 600 MHz bandwidth and a centre frequency of 5 GHz. READ MORE

  3. 2. The magnetic field of phi Draconis

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Nikolaos Papakonstantinou; [2022]
    Keywords : stars: atmospheres – stars: chemically peculiar – stars: magnetic field – stars: starspots – stars: individual: phi Dra;

    Abstract : Within this past decade, advances in spectropolarimetric analyses allowed mapping surface characteristics of nearby non-resolved stars with unique characteristics. In this study, we attempt mapping of the magnetic field structure and surface distribution of elements for such a star, the magnetic Ap star phi Dra. READ MORE

  4. 3. Zeeman Doppler Imaging of the eclipsing binary UV Piscium

    University essay from Uppsala universitet/Observationell astrofysik

    Author : Axel Hahlin; [2020]
    Keywords : Magnetic fields; polarisation; eclipsing binary;

    Abstract : Magnetic fields are important for multiple physical processes in and around stars, for these reasons improving the understanding of how they are generated and maintained is of great value. In this work the magnetic field structure of the eclipsing binary UV Piscium is investigated. READ MORE

  5. 4. The magnetic field and stellar masses of the eclipsing binary UV Piscium

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Frida Torrång; [2019]
    Keywords : Eclipsing binary; Magnetic field; Orbital motion; Stellar masses;

    Abstract : The presence of a magnetic field is shown to affect the evolution and properties of stars. Hence, it is necessary to observe different types of stars to explore these effects. The detached eclipsing binary UV Piscium is the object of interest in this study, where a first step of analyzing its global magnetic field is done. READ MORE

  6. 5. Dependency of high-order harmonics to polarisation properties of many-cycle driving fields

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Timothé Ramboazanaka; [2018]
    Keywords : Atomic physics; attosecond pulses; high-order harmonic generation; polarisation; polarisation state; electron wave packet trajectory; three-step model; time-dependent schrödinger equation; TDSE; two-colour; selection rules; symmetry; conservation laws; Physics and Astronomy;

    Abstract : Light-matter interactions can be used to probe both light and matter as they yield information on a system's state. On the ultrafast timescale, it is possible to employ these interactions to probe fast-occurring phenomena. READ MORE