Search for dissertations about: "Passive components and circuits"

Showing result 1 - 5 of 30 swedish dissertations containing the words Passive components and circuits.

2. 1. Towards Ultimate Performance of THz Heterodyne Receivers: SIS Frequency Multiplier and Wideband Passive Components

   Author : Hawal Marouf Rashid; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Wideband passive components; distributed SIS junction; Frequency multiplier; Frequency up-converter; Hybrids; distributed SIS frequency multiplier;

   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

4. 2. InP-based heterostructure field effect transistors and millimeter wave integrated circuits

   Author : Anders Mellberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; passive components; InP; MIM capacitor; high electron mobility transistor HEMT ; monolithic microwave integrated circuit MMIC ; CPW; TL; 2DEG; heterostructure field effect transistor HFET ; spiral inductor; modeling; wideband LNA; coplanar waveguides; microstrip transmission line; modulation doped field effect transistor MODFET ; III-V semiconductor; low noise amplifier; compound semiconductor; thin film resistor TFR ; indium phosphide; low noise amplifier;

   Abstract : .... READ MORE

5. 3. Mixer, Multiplier and Passive Components for Low Noise THz Receivers

   Author : Bhushan Billade; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; millimeter wave receivers; Superconductor-Insulator-Superconductor SIS mixers; thin-film circuits.; superconducting devices; quasi-particle mixers; frequency multiplier;

   Abstract : This thesis presents the work done in the field of development of low noise instruments for radio astronomy applications, and addresses some of the key components in the receiver. Part of this thesis describes the design and development of a Superconductor-Insulator-Superconductor (SIS) junction mixer covering RF frequencies from 163 to 211 GHz, reaching the quantum limited noise performance. READ MORE

6. 4. Integrated Lumped Element and Ferroelectrically Tunable Microwave Components

   Author : Dan Kuylenstierna; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lumped; Passive element; metamaterial; periodic structure;

   Abstract : This thesis treats the development of passive circuits for increased integrationlevel in microwave front-ends. The subject is approached from twodifferent directions. On the one hand, emerging materials for microwaveintegrated circuits are studied. On the other hand, novel circuit topologiesare synthesized. READ MORE

7. 5. Experimental Verification of Superconductor Digital Circuits

   Author : Henrik Engseth; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heatload; MCM; high frequency test; RSFQ; Superconductivity;

   Abstract : Superconducting digital technology based on Rapid Single Flux Quantum logic (RSFQ) offers more than 50 times advantages in speed and $100$ times less power consumption than today's mainstream semiconductor electronics. This technology is attractive for many applications and in particular for Digital Signal Processing (DSP) for multi-user detection in a 3G wireless systems being developed at Chalmers University. READ MORE