Search for dissertations about: "Frequency multiplier"
Showing result 1 - 5 of 48 swedish dissertations containing the words Frequency multiplier.
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1. Towards Ultimate Performance of THz Heterodyne Receivers: SIS Frequency Multiplier and Wideband Passive Components
Abstract : This thesis focuses on the development of advanced components for the future wideband side band separating and / or multipixel receivers for radio-astronomy with ultimate sensitivity.In this thesis, a novel frequency multiplier based on distributed superconducting tunnel (SIS) junctions has been demonstrated for the first time, taking advantage of the extreme inherent nonlinearity of such device. READ MORE
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2. Resistive FET frequency multipliers for micro- and millimetre waves
Abstract : .... READ MORE
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3. Symmetric varactor frequency multipliers
Abstract : This thesis describes heterostructure barrier varactor (HBV) frequency multipliers for millimetre and sub-millimetre wave applications.The basic principles of HBVs are explained. Starting from basic varactor theory, an equivalent circuit model for HBVs is presented. READ MORE
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4. Heterostructure Barrier Varactor Diodes for Frequency Multiplier Applications
Abstract : This thesis deals with fabrication, characterisation and modelling of the Heterostructure Barrier Varactor (HBV) diode and its use in frequency multiplier circuits. Different aspects of material structures and frequency multipliers are described. READ MORE
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5. HBV frequency multiplier 2D arrays and application
Abstract : The utilisation of the THz spectrum ( 0.3-3 THz ) is hampered by technological difficulties to generate power at these frequencies. READ MORE