Novel Dual-Band Microwave Filter Using Dual-Capacitively-Loaded Cavity Resonators Academic Article

abstract

• We present a novel design concept for low-loss dual-band cavity filters based on dual-capacitively-loaded (DCL) cavity resonators. The relatively independent control over the center frequencies, inter-resonator and external coupling coefficients makes the DCL resonator an ideal building block for dual-band filters with widely separated passbands. The high unloaded quality factor (Qu) of the DCL cavity resonator ensures a low insertion loss. An example 2-pole dual-band filter at 2.4 and 5.0 GHz is demonstrated with an insertion loss of 1.47 dB at 2.4 GHz, 1.01 dB at 5.0 GHz and a bandwidth of 24.8 MHz (~1%) at 2.4 , and 51.2 MHz (~1%) at 5.0 GHz.

authors

• Katehi, Linda

published proceedings

• IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS

author list (cited authors)

• Liu, X., Katehi, L., & Peroulis, D.

citation count

• 42

complete list of authors

• Liu, Xiaoguang||Katehi, Linda PB||Peroulis, Dimitrios

publication date

• November 2010

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Microwave and Wireless Components Letters  Journal

keywords

• Cavity Resonator
• Dual-band Filter
• Quality Factor
• Waveguide Filter

Digital Object Identifier (DOI)

• 10.1109/LMWC.2010.2059696

start page

• 610

end page

• 612

volume

• 20

issue

• 11

URL

• http://dx.doi.org/10.1109/lmwc.2010.2059696