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A novel RFID reader antenna with polarization reconfigurable performance is proposed. The radiating part of the reader is a printed square ring, and a reconfigurable feeding network with an embedded PIN diode is introduced to reconfigure polarization. The proposed reader antenna can be linear and circular polarized at the 910–930 MHz band by switching ON/OFF the diode. The reader antenna was fabricated...
In advanced technology node, the complexity of process, materials selection and limitation of tools' capability, becomes very challenging with respect to meet tight reliability targets. In our fabrication of low-k based BEOL integration scheme, we have demonstrated that by proper inline process characterization, feedback and control at critical process modules, a robust Time Dependent Dielectric Breakdown...
In this work, we propose a new technique for comprehensive scanner matching to fundamentally improve scanner productivity in a Giga fab. The proposal covers matching solutions for both CD and overlay fingerprints among scanners. CD matching strategy has three main components. The first part is to apply model-based scanner tuning for scanner optics matching. The second part is to apply hotplate-tuning...
Ground penetrating radar has been widely used in many areas. However, the processing and interpretation of acquired signals remains a challenging task since it requires experienced users to manage the whole operations. In this paper, we propose an automatic classification system to categorise GPR signals based on magnitude spectrum amplitudes and support vector machines. The system is tested on a...
Time-reversed electromagnetic wave has the property of spatial super-resolution focusing in far-field circumstances. This paper provides a novel method to design compact multi-antenna for wireless communication system using time reversal super-resolution property. A new type of planar microstructured antennas with the super-resolution of 1/15 wavelength is constructed and simulated with the aid of...
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