Sökning: "tuned antenna"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden tuned antenna.

  1. 1. Scann Loss Reduction on Phased Array Antenna

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Wanyu Zhang; [2022]
    Nyckelord :Phased Array Antenna; Vivaldi Antenna; Scan Loss; Coverage Angle; Sub-array; Embedded Radiation Pattern; Fasad Array Antenn; Vivaldi Antenn; Skanningsförlust; Täckningsvinkel; Sub-array; Inbyggt strålmönster;

    Sammanfattning : Phased array antennas with small size and light weight are proposed to make signal transmitting more efficiently and accurately. These antennas have such advantages that they can realize beam scanning over a large range, accurately track and identify targets within the observation range. LÄS MER

  3. 2. Field uniformity and isotropy investigation of Halmstad University's reverberation chamber : In collaboration with Halmstad University and Ericsson AB, Lund

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Khaled Ads; [2020]
    Nyckelord :Reverberation chamber;

    Sammanfattning : This thesis is the final module of the Master's program in Electronics Design at Halmstad University. The Master Thesis work is a part of an ongoing development of Halmstad University's reverberation chamber (RC), which is aimed at frequencies in the low GHz range. The development process has been passing in several phases. LÄS MER

  4. 3. PARTON SHOWER UNCERTAINTIES ON THE TOP MASS

    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Hristina Georgieva Hristova; [2019]
    Nyckelord :top quark mass; uncertainty; Lund Monte Carlo; Pythia; Physics and Astronomy;

    Sammanfattning : The non-Abelian QCD nature allows for pp collisions to contain gluon emissions off quarks as well as gluon branchings into further gluons — a structure that can be described by the parton shower model. In this project we present the results of the impact the shower has on the reconstruction of the W-boson and top quark masses using Pythia, the Lund Monte Carlo event generator. LÄS MER

  5. 4. 3D Printing a Maxwell Fish Eye Lens With Periodic Structures

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Valentine Lin; Tarek Sayed Hamad; [2019]
    Nyckelord :Maxwell fish eye lens; dielectric lens antenna; metamaterial; periodic structure; 3D printed lenses.;

    Sammanfattning : With the rise of high frequency communication systems such as 5G, new types of antennas has to be developed in order to meet the new requirements. In recent years, lens antennas made of periodic structures has been shown to have desirable performance when increasing operational frequency without increasing the size of the antennas. LÄS MER

  7. 5. Feasibility of an Electrically Tuneable EMC Susceptibility Antenna for 26-150 MHz

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Lucas Svensson; Gustaf Ljungné; [2019]
    Nyckelord :EMC; tuneable; antenna; low frequency; susceptibility; electromagnetic compatibility; immunity; testing; 26-150 MHz; changing size; EZNEC; SAAB; tuned antenna; anechoic chamber;

    Sammanfattning : Electromagnetic compatibility (EMC) is an essential part in today’s society and there are more products around us that emit electromagnetic waves than ever before. To make sure that all these products function properly under all circumstances EMC testing is needed. One test that is conducted is radiated immunity testing. LÄS MER