TUNABLE BANDPASS FILTER USING RF MEMS SWITCHES

Rf Mems: Switches and Tunable Capacitors

RF MEMS is a key enabling device technology with the potential for significant performance, cost, and integration benefits to communications and radar applications. An overview of MEMS RF switches and tunable capacitors is presented, with examples of device technologies developed at RSC. Examples of MEMS-based circuits, including tunable filters and phase shifter circuits, are provided to illus...

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.

Effect of Filter Parameters on the Phase Noise of RF MEMS Tunable Filters Employing Shunt Capacitive Switches

The effect of filter parameters on the phase noise of RF MEMS tunable filters employing shunt capacitive switches is investigated in this article. It is shown that the phase noise of a tunable filter is dependent on the input power, fractional bandwidth, filter order, resonator quality factor, and tuning state. Phase noise is higher for filters with smaller fractional bandwidth. In filters with...

ESD effects in capacitive RF MEMS switches

RF MEMS have shown very attractive characteristics in automotive, communication, aeronautic and aerospace applications, thanks to its low mass and volume, low losses, low power consumption, high isolation and a wide operative frequency range. Moreover they have demonstrated good integration with electronics which show their ability to built-in innovative RF architectures [1]. Nevertheless the a...

Time Characterization of Capacitive Mems Rf Switches