Essays about: "antennas 2014"

Showing result 1 - 5 of 13 essays containing the words antennas 2014.

  1. 1. Enhancement of Positioning and Attitude Estimation Using Raw GPS Data in an Extended Kalman Filter

    University essay from Linköpings universitet/Reglerteknik; Linköpings universitet/Tekniska högskolan

    Author : Jesper Carlsson; [2014]
    Keywords : GPS; attitude determination; pseudorange; tight coupling;

    Abstract : A Global Positioning System (GPS) can be used to estimate an objects position,given that the object has a GPS antenna. However, the system requires informationfrom at least four independent satellites in order to be able to give a positionestimate. READ MORE

  3. 2. Investigation and comparison between radiation and phase center for canonical antennas

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Casimir Ehrenborg; [2014]
    Keywords : Technology and Engineering;

    Abstract : The phase center is defined as the point on an antenna from which the far field radiation seems to originate. Phase center calculations are often uncertain and vague, and very little concrete information is available on the subject. Recently, a replacement parameter called the radiation center was introduced in [5]. READ MORE

  4. 3. Efficient Computation of the Near-Field Mutual Coupling Between Antennas on Vehicles

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Henrik Frid; [2014]
    Keywords : coupling; near-field; antennas;

    Abstract : A near-eld generalization of Friis transmission equation has previously been proposed in the literature. Using this generalization, it is possible to calculatethe mutual coupling between two antennas as a weighted integral over the antenna far-fields. READ MORE

  5. 4. Impact of Mutual Coupling among Antenna Arrays on the Performance of the Multipath Simulator System

    University essay from Avdelningen för elektronik, matematik och naturvetenskap

    Author : Dhayalini Ramamoorthy; [2014]
    Keywords : MIMO; MPS system; Antenna array;

    Abstract : This thesis work presents a study on the impact of mutual coupling among antenna arrays on the performance of the multipath simulator (MPS) system. In MIMO systems, it is a wellknown fact that the mutual coupling significantly affects their system performance. READ MORE

  6. 5. Investigation and Implementation of Coexistence Tool for Antennas

    University essay from Linköpings universitet/Kommunikationssystem; Linköpings universitet/Tekniska högskolan

    Author : Robin Carlsson; [2014]
    Keywords : radio; antenna; co-site interference;

    Abstract : With the increase of the number of radios and antennas on today’s systems, the risk of co-site interference is very high. Intermodulation product and antenna coupling are two common sources of interference. READ MORE