A 3-Pole Combline Tunable Filter Using RF MEMS Switches for Band-Selective Low-Noise Amplifier Applications

In this paper, a 3-pole RF MEMS tunable combline filter with frequency coverage of 7.656-9.24 GHz is presented. The proposed filter is designed for a band-selective low-noise amplifier (LNA) in RF front-end of a transceiver on Microstrip line technology. The Microstrip line Topology results in small size, nearly high-Q resonators and very low cost. This filter has an insertion loss of 1.02-1.59 dB and 3-dB bandwidth of 530-566 MHz over the tuning range. The location of resonant poles is controlled by MEMS (Micro-Electro-Mechanical-Systems) capacitive switches.

کلیدواژه ها:

Combline filter ، RF-MEMS ، Microstrip line ، Tunable filter