Sökning: "Mixer"

Visar resultat 1 - 5 av 117 avhandlingar innehållade ordet Mixer.

1. 1. Mixers and Multifunctional MMICs for Millimeter-Wave Applications

   Författare :Sten Gunnarsson; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; G-band; double-balanced Gilbert mixer; sub-harmonically pumped resistive mixer; pHEMT; receiver; image reject mixer; dual-quadrature mixer; balanced resistive mixer; resistive mixer; 220 GHz; high data rate; drain mixer; 53 GHz; single-chip; V-band.; radiometer; mixer; broadband wireless communication; multifunctional; MMIC; GaAs; mHEMT; transmitter; 60 GHz;

   Sammanfattning : This thesis treats the design and characterization of different mixer and multifunctional monolithic microwave integrated circuits (MMICs) in GaAs pHEMT and mHEMT technologies. The MMICs operate at the V (50 – 75 GHz) and G (140 – 220 GHz) bands and several of them demonstrate state-of-the-art performance, level of integration, novel topologies, and/or novel functionality. LÄS MER

3. 2. Millimeter and Sub-Millimeter Wave Integrated Active Frequency Down-Converters

   Författare :Yu Yan; Chalmers University of Technology; []
   Nyckelord :145 GHz; self-oscillating mixer; mixer; conversion gain; millimeter wave; radar; mHEMT; noise figure; monolithic; sub-millimeter wave; InP; THz; resistive mixer; Gilbert mixer; DHBT; SiGe; 340 GHz; 220 GHz; FMCW; transconductance mixer; BiCMOS; transceiver; harmonic; GaAs;

   Sammanfattning : In recent years, the increasing amount of data transmission, the need for automotiveradars, and standoff imaging for security applications are the main factors that accelerateresearch in the millimeter and sub-millimeter wave frequency ranges. The semiconductorindustries have continuously developed their processes, which have opened upopportunities for manufacturing monolithically integrated circuits up to a few hundredGHz, based on transistor technologies. LÄS MER

4. 3. 60 GHz Mixer and Multifunctional MMICs in GaAs pHEMT and mHEMT technologies

   Författare :Sten Gunnarsson; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Image reject mixer; Broadband wireless communication; Single-chip; Multifunctional; Mixer; Balanced resistive mixer; GaAs; Dual-quadrature mixer; 60 GHz; Receiver; pHEMT; MMIC; High data-rate; Double balanced Gilbert mixer; mHEMT; Transmitter; V-band;

   Sammanfattning : In recent years, the 60 GHz band has gained increased academic and commercial interest mainly due to the relative large amount of license free and little used frequency spectrum located in vicinity of 60 GHz. The exact locations of these free frequency bands varies locally but the 5962 GHz band overlap around the world and is therefore a true world wide license free band. LÄS MER

5. 4. FET mixers and nonlinear FET models for intermodulation analysis

   Författare :Klas Yhland; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gate mixer; drain mixer; FET mixer; HFET model; HEMT model; resistive mixer; intermodulation; MESFET model; FET model;

   Sammanfattning : .... LÄS MER

7. 5. Modelling, Analysis and Design of RF Mixed-Signal Mixer for Wireless Communications

   Författare :Li Li; KTH; []
   Nyckelord :RF; INTEGRATED CIRCUITS; MIXED-SIGNAL; MIXER; WIRELESS COMMUNICATIONS; NOISE ANALYSIS; SUBSTRATE COUPLING.;

   Sammanfattning : The explosive growth of the market for wirelesscommunications is driving low cost, highly integrated designsand complex RF/analog mixed-signal integrated circuit (RF AMSIC) products. RF transceiver application is one of the mostimportant wireless applications. LÄS MER