Layout Optimization of Small-Size Ferroelectric Parallel-Plate Varactors

Autor:	Dan Kuylenstierna, Spartak Gevorgian, Andrei Vorobiev, Martin Norling
Rok vydání:	2010
Předmět:	Permittivity Radiation Materials science Fabrication business.industry STRIPS Condensed Matter Physics Ferroelectricity law.invention Capacitor Electrical resistance and conductance law Electronic engineering Optoelectronics Electrical and Electronic Engineering Shape factor business Varicap
Zdroj:	IEEE Transactions on Microwave Theory and Techniques. 58:1475-1484
ISSN:	1557-9670 0018-9480
Popis:	The extremely high permittivity of ferroelectric varactors (typically ϵr > 100) imposes specific design and fabrication constraints for microwave and millimeter-wave applications. In this paper, small-size parallel-plate ferroelectric varactors insensitive to fabrication misalignment tolerances are studied experimentally. It is shown that the total resistance of the varactors strongly depends on the shape factor of the plates. Moreover, due to the small sizes of the varactors, the interconnecting strips become narrow and their contribution to the total resistance dominates. A simple procedure for optimization of the shape factor to minimize the varactor resistance is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7490479393b62c23f7ba08b94b2df27 https://doi.org/10.1109/tmtt.2010.2047915 Zobrazit plný text záznamu