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- W608976429 abstract "The interest towards millimeter waves has rapidly grown up during the last few years, leading to the development of a large number of potential applications in the millimeter wave band, such as WPANs and high data rate wireless communications at 60GHz, short and long range radar at 77-79GHz, and imaging systems at 94GHz.Furthermore, the high frequency performances of silicon active devices (bipolar and CMOS) have dramatically increased featuring both fT and fmax close or even higher than 200GHz. As a consequence, modern silicon technologies can now address the demand of low-cost and high-volume production of systems and circuits operating within the millimeter wave range. Nevertheless, millimeter wave design still requires special techniques and methodologies to overcome a large number of constraints which appear along with the augmentation of the operative frequency.The aim of this thesis is to define a design methodology for integrated circuits operating at millimeter wave and to provide an experimental validation of the methodology, as exhaustive as possible, focusing on the design of low noise amplifiers (LNAs) as a case of study.Several examples of LNAs, operating at 60, 80, and 94 GHz, have been realized. All the tested circuits exhibit performances in the state of art. In particular, a good agreement between measured data and post-layout simulations has been repeatedly observed, demonstrating the exactitude of the proposed design methodology and its reliability over the entire millimeter wave spectrum. A particular attention has been addressed to the implementation of inductors as lumped devices and – in order to evaluate the benefits of the lumped design – two versions of a single-stage 80GHz LNA have been realized using, respectively, distributed transmission lines and lumped inductors. The direct comparison of these circuits has proved that the two design approaches have the same potentialities. As a matter of fact, design based on lumped inductors instead of distributed elements is to be preferred, since it has the valuable advantage of a significant reduction of the circuit dimensions.Finally, the design of an 80GHz front-end and the co-integration of a LNA with an integrated antenna are also considered, opening the way to the implementation a fully integrated receiver." @default.
- W608976429 created "2016-06-24" @default.
- W608976429 creator A5024767816 @default.
- W608976429 date "2011-06-24" @default.
- W608976429 modified "2023-09-27" @default.
- W608976429 title "Design methodology for millimeter wave integrated circuits : application to SiGe BiCMOS LNAs" @default.
- W608976429 hasPublicationYear "2011" @default.
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