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A miniaturized coplanar waveguide-fed (CPW) ultra-wideband (UWB) printed antenna is designed and optimized with S11 < 10 dB and bandwidth of 3.1 ∼ 10.5 GHz, i.e., 3.4:1 ration bandwidth. The miniaturization is achieved by cutting out a half-elliptical notch in the original half-elliptical metallic patch that acts as the radiator, and the size of metallic patch is reduced to less than 72% of the...
In this paper, we introduce back-to-back patch antennas for intelligent door lock with −60dB isolation. By adopting this structure, the lock can identify the position of the remote sensor successfully. The high isolation between the back-to-back patch antennas can be properly analyzed and explained by the cavity model theory.
This letter introduces a planar slot antenna operated under surroundings of an unbroken metal rim in mobile handsets. The height of the slot antenna is shortened, and the bandwidth for low band is expanded to cover both GSM850 and GSM900. This antenna provides a solution for planar unbroken metal-rimmed handsets and can be operated in five wireless communication bands...
As the continual decrease of the feature size, the parasitic inductance and capacitance effect play important role in IC design and verification. Previous works on layout extraction mainly concentrated on how to find out the type of devices and connections between them, few works has addressed the information of centerlines and widths of IC interconnects in a polygon-based VLSI layout, which are required...
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