Essays about: "närfält"

Found 4 essays containing the word närfält.

  1. 1. PCBA verification and fault detection using a low-frequency GMR-based near-field probe with magnetic closed-loop feedback compensation : A non-contact alternative to physical probing

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

    Author : Joacim Sundh; [2022]
    Keywords : GMR; sensor; magnetic field; near-field; probe; linearity; PCB; coil; PCBA; analogue integrated circuits; analog; operational amplifiers; electrical fault detection; feedback circuits; in-circuit tests; GMR; sensor; magnetfält; närfält; sond; linjäritet; mönsterkort; spole; kretskort; analoga integrerade kretsar; operationsförstärkare; elektrisk feldetektering; återkopplingskretsar; kretskortstest;

    Abstract : As electronics are getting both smaller and more advanced, the need to verify and validate remains and the means are getting more complex the more functions and components are added. Traditionally, in-circuit tests (ICTs) are performed by probing dedicated test points on the Printed Circuit Board Assembly (PCBA) in a test sequence that is unique to each product. READ MORE

  3. 2. Electromagnetic Compatibility Scanner

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

    Author : Erik von Keyserlingk; [2020]
    Keywords : ;

    Abstract : With the increasing amount of wireless devices in use today. All from Bluetooth headphonesto smart fridges, which communicates wirelessly to a server or phone. The needfor the radio frequency spectrum to be free from disturbances is necessarily. READ MORE

  4. 3. Characterization of Passive Intermodulation Distortion in MultiBand FDD Radio Systems

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

    Author : Tomás Soares da Costa; [2019]
    Keywords : ;

    Abstract : Intermodulation distortion (IMD) is a phenomenon that results in generation of spurious distortion signals when two or more signals of different frequencies pass through a nonlinear system. In general, IMD occurs in active circuits of a radio system, however, passive wireless components such as filters, transmission lines, connectors, antennas, attenuators etc. READ MORE

  5. 4. 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