Skip to Main content Skip to Navigation
Theses

Optimisation de structures différentielles en technologie SiGe pour applications en bande millimétrique. Application à la conception d'un mélangeur doublement équilibré en bande K

Abstract : Present work contributes to BiCMOS SiGe monolithic technology evaluation for future high-performance millimetre-wave telecommunications applications. For theses applications, balanced circuit architectures are very attractive according to their low noise susceptibility and their EMI radiation immunity. However, as frequency is increased, passive devices losses raise and classical differential amplifier topologies cannot achieve sufficiently well balanced operation. Thus, our main purpose is to propose innovative differential topologies suitable for millimetre-wave high-performance balanced circuits. Firstly, the evaluation of several interconnection technologies (microstrip, coplanar waveguide and coplanar strips) integrated on silicon substrate is presented. An inductor library then is designed for K and Ka frequency band operation. Enhanced performance inductors are issued from the analysis of losses mechanisms. A second part addresses the performance optimization of differential circuits for future applications in the 20-40 GHz frequency range. Firstly, we demonstrate that classical approaches for differential pair design lead to poor balanced behaviour in the millimetre-wave frequency band, because of intrinsic transistor characteristics. Original differential pair topologies are then proposed to overcome these drawbacks. These structures are then applied for the design of a 20 GHz active balun. Finally, a double balanced frequency converter from 20 GHz to 1 GHz is designed. The whole chip integrates the mixing cell and the three couplers. The characterization of this circuit demonstrates the usefulness of our choice for interconnections and confirms the great interest of developed original differential structures.
Complete list of metadatas

Cited literature [57 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00011033
Contributor : Emilie Marchand <>
Submitted on : Friday, November 18, 2005 - 10:42:32 AM
Last modification on : Friday, January 10, 2020 - 9:08:09 PM
Long-term archiving on: : Friday, April 2, 2010 - 10:17:44 PM

Identifiers

  • HAL Id : tel-00011033, version 1

Citation

Christophe Viallon. Optimisation de structures différentielles en technologie SiGe pour applications en bande millimétrique. Application à la conception d'un mélangeur doublement équilibré en bande K. Micro et nanotechnologies/Microélectronique. Université Paul Sabatier - Toulouse III, 2003. Français. ⟨tel-00011033⟩

Share

Metrics

Record views

521

Files downloads

2462