6.4 - MEMS-Varactors: challenges for large tuning ratios
- Event
- iCCC2024 - iCampµs Cottbus Conference
2024-05-14 - 2024-05-16
Cottbus - Band
- Vorträge
- Chapter
- Kommunikation und HF-MEMS
- Author(s)
- M. Stolz, K. Schimmanz - Fraunhofer IPMS, Dresden , J. Okocha - Brandenburgische Technische Universität Cottbus-Senftenberg, Cottbus
- Pages
- 92 - 95
- DOI
- 10.5162/iCCC2024/6.4
- ISBN
- 978-3-910600-00-3
- Price
- free
Abstract
Different modern applications, such as tuner circuits, high-frequency voltage-controlled oscillators (VCO), RF-filters, radio front-end systems as well as many sensor systems require adjustable electrical capacitances – called varactors. The standard semiconductor varactors are strongly limited in the max-imum reachable tuning ratio (TR), which is needed to cover bigger frequency ranges. This paper pre-sents a possibility use of micro electro-mechanical (MEMS) varactors instead, to achieve high TR, ana-lyze the challenges from different aspects and propose an example design of it.