Design and simulation of RF MEMS switchable low pass filter

Abstract

This paper presents the design and chararacterization of Radio Frequency (RF) Micro Electro Mechanical System (MEMS) based switchable low pass filter. The proposed design of the switchable filter is used in space applications for frequency switchability where electromagnetic spectrum can be effectively utilized. In this paper, RF MEMS Switches are used to achieve tunability between two frequencies. MEMS switches are used since they provide very low loss, do not require any dc current and offer a very low power approach for tuning application. The filter and the switches are designed at a frequency of 2 and 3 GHz. RF performance of switchable filter is carried out using Advanced Design System (ADS).