A 1.2-1.6-GHz Substrate-Integrated-Waveguide RF MEMS Tunable Filter Academic Article

abstract

• This paper presents a high-performance substrate-integrated-waveguide RF microelectromechanical systems (MEMS) tunable filter for 1.2-1.6-GHz frequency range. The proposed filter is developed using packaged RF MEMS switches and utilizes a two-layer structure that effectively isolates the cavity filter from the RF MEMS switch circuitry. The two-pole filter implemented on RT/Duroid 6010LM exhibits an insertion loss of 2.2-4.1 dB and a return loss better than 15 dB for all tuning states. The relative bandwidth of the filter is 3.7 ± 0.5% over the tuning range. The measuredQuof the filter is 93-132 over the tuning range, which is the best reportedQin filters using off-the-shelf RF MEMS switches on conventional printed circuit board substrates. In addition, an upper stopband rejection better than 28 dB is obtained up to 4.0 GHz by employing low-pass filters at the bandpass filter terminals at the cost of 0.7-1.0-dB increase in the insertion loss.

authors

• Entesari, Kamran

published proceedings

• IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES

author list (cited authors)

• Sekar, V., Armendariz, M., & Entesari, K.

citation count

• 138

complete list of authors

• Sekar, Vikram||Armendariz, Marcelino||Entesari, Kamran

publication date

• April 2011

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Microwave Theory and Techniques  Journal

keywords

• Rf Microelectromechanical Systems (rf Mems)
• Spurious Suppression
• Substrate Integrated Waveguide (siw)
• Tunable Filter

Digital Object Identifier (DOI)

• 10.1109/TMTT.2011.2109006

start page

• 866

end page

• 876

volume

• 59

issue

• 4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Ftmtt.2011.2109006