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The article offers the information on the microwave band pass filters and leverage metamaterial resonators for low passband insertion loss and high out-of-band rejection for wireless applications at 2.4 GHz. The article also mentions about the open-loop resonator is constructed by adding half-wave-length microstrip lines with a certain coupling structure to achieve the required filter performance.

The article offers information on designing an UWB bandpass filter by using metamaterials and composite-right-left-handed transmission lines. The U.S. Federal Communications Commission allowed use of 3.1 to 10.6 GHz and fractional bandwidths for indoor and outdoor data transmission systems. Multimode resonators were also used in UWB filter designs.

The article describes a compact dual-band ultrawideband power divider that is designed for multiband orthogonal frequency division multiplexing and for direct sequence ultrawideband applications from 6.2 to 9.0 gigahertz. Topics mentioned include insertion loss exhibited by the power divider, global expansion of wireless services and systems, and the use of dual composite right- and left-handed metamaterial transmission lines in a microstrip configuration.

The article reports that a new configuration of composite right/left-handed metamaterial-based transmission lines were the building blocks for a novel triple-band compact resonator. The multiple-band resonator is fabricated on standard commercial circuit material with dielectric constant of 3.55 and thickness of 1.52 mm.