Book contents
- Frontmatter
- Dedication
- Contents
- List of Contributors
- Preface
- List of Abbreviations
- 1 Introduction
- 2 Electromechanical modelling of electrostatic actuators
- 3 Switches and their fabrication technologies
- 4 Niche switch technologies
- 5 Reliability
- 6 Dielectric charging
- 7 Stress and thermal characterisation
- 8 High-power handling
- 9 Packaging
- 10 Impedance tuners and tuneable filters
- 11 Phase shifters and tuneable delay lines
- 12 Reconfigurable architectures
- 13 Industry roadmap for RF MEMS
- Author biographies
- Index
- References
4 - Niche switch technologies
Published online by Cambridge University Press: 05 February 2014
- Frontmatter
- Dedication
- Contents
- List of Contributors
- Preface
- List of Abbreviations
- 1 Introduction
- 2 Electromechanical modelling of electrostatic actuators
- 3 Switches and their fabrication technologies
- 4 Niche switch technologies
- 5 Reliability
- 6 Dielectric charging
- 7 Stress and thermal characterisation
- 8 High-power handling
- 9 Packaging
- 10 Impedance tuners and tuneable filters
- 11 Phase shifters and tuneable delay lines
- 12 Reconfigurable architectures
- 13 Industry roadmap for RF MEMS
- Author biographies
- Index
- References
Summary
Introduction
The past five years have seen a dramatic rise in the number of niche switch technologies being reported in the open literature. These include, but are not limited to, the general areas of latching, multiway and high-power. These niche technologies are covered within the same dedicated chapter, because of the synergy found between them. It should be of no surprise that there is a large overlap between these technologies; with latches being used in both multiway and high-power switches and the need for implementing high-power multiway switches.
Latching switches
For some applications, switches are required that are non-volatile and able to remain in any state after the source of actuation energy has been removed. For example, in certain safety-critical applications it is essential for the state of the system to be preserved in the event of a power failure. In other systems, for example, in portable electronic devices, remote sensors and unmanned aerial (or air or aircraft) vehicles (UAVs) or systems (UASs), the available power is limited and non-volatile switches are attractive because they require zero holding power, regardless of their state.
- Type
- Chapter
- Information
- Advanced RF MEMS , pp. 73 - 108Publisher: Cambridge University PressPrint publication year: 2010