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This study presents the implementation of a millimeter-wave compact bandstop filter (BSF) using the standard 0.18 μm CMOS process. The topology is based on transversal signal interference technique, obtained by connecting two transmission lines with proper characteristic impedances and electrical lengths in parallel. Sharp-rejection characteristics are obtained without using any extra resonators....
Direct current transformer is the key device in measuring high current value of HVDC power system. Its accuracy and reliability is an important basis guaranteeing the control and protection system of HVDC grid work normal. A mal-operation event of protection relay of plusmn500 kV HVDC system of China Southern Power Grid Co., Ltd. is described. Measurement performance of optic-electric DC current transformer...
In this paper, we describe the sensitivity and impedance measurement method for UHF RF identification (RFID) chips. The measurements are performed using an RFID tester (RFID reader with variable output power and frequency) and a vector network analyzer. No special impedance matching is required: chips can be connected to standard 50-Omega connectors allowing the sensitivity and threshold impedance...
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