Serial and Parallel Active Decoupling Characterization Using RF MEMS Switches for Receiver Endoluminal Coils at 1.5 T

Low-Noise Active Decoupling Circuit and its Application to 13C Cryogenic RF Coils at 3 T

Corresponding Author: Jan Henrik Ardenkjær-Larsen, PhD Department of Electrical Engineering, Technical University of Denmark, Kongens Lyngby, Copenhagen, Denmark; E-mail: [email protected]

Time Characterization of Capacitive Mems Rf Switches

RF MEMS Switches

An overview of the MEMS technology development and applications is given in this paper. A special attention is paid to the RF MEMS switches. Both series and shunt MEMS switches have been considered. It is also presented a technique for modeling and design of inductively-tuned MEMS shunt switch. Some very important issues for the device maturity e.g. reliability and packaging have been addressed.

Comparison of MEMS switches and PIN diodes for switched dual tuned RF coils.

PURPOSE To evaluate the performance of micro-electromechanical systems (MEMS) switches against PIN diodes for switching a dual-tuned RF coil between 19 F and 1 H resonant frequencies for multi-nuclear lung imaging. METHODS A four-element fixed-phase and amplitude transmit-receive RF coil was constructed to provide homogeneous excitation across the lungs, and to serve as a test system for vari...

RF MEMS Switches for Antenna Applications

RF Micro-Electro-Mechanical (MEM) switches have numerous potential applications from mode switching in cell phones at 1-2 GHz to phased array antennas for space-based radar applications. However, environmental factors such as temperature, humidity, and foreign contaminants play a significant role in switch reliability and lifetime. The effects of these environmental factors must be mitigated to...