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The level control system by multi-point real-time detection is designed in this paper based on the fuzzy self-adjusting PID algorithm. It is applied in the non-probe near-field optical microscope. Capacitance-to-digital converter chip AD7746 is used to converted capacitance value which is proportional to the distance between code plate and platform into digital value in the micro-positioning platform...
This study presents a high performance K-band low noise amplifier. By utilizing transformer feedback at the input stage, an excellent noise figure (NF) of 4.3 dB is obtained at 22 GHz. With the current-reused technique between the two stages, the amplifier achieves a maximum power gain of 10.1 dB under a supply voltage of 1.8 V and a power consumption of only 7.2 mW. The proposed LNA has comparable...
As wireless communication devices become smaller and lighter, less space is allowed for the placement of the RF components. Area reduction of circuit design is becoming more and more notable. This paper introduces the design and model for the basic embedded passives, and methods of circuits design with embedded elements for 5 GHz RF front-end module for IEEE 802.11a on PWB lamination process. The...
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