Zhai Dailiang

Compact Monopole Sleeve Antenna Reaches 11.8 GHz

Antennas for ultrawideband (UWB) must exhibit wide operating bandwidth, but also small size for use in a variety of electronic devices. A monopole planar sleeve antenna may meet those requirements with a broad frequency range extending almost to 12 GHz. It consists of symmetrical strips and a ground plane on the same side, using a coplanar-waveguide (CPW) structure on low-cost FR-4 dielectric substrate material with relative dielectric constant of 2.95 and thickness of 1.6 mm. This antenna is suitable for worldwide interoperability for microwave access (WiMAX) applications.


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