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This paper presents the design of liquid detection sensor with low-frequency electromagnetic field. The purpose of this sensor is to detect a change in the conductivity or permittivity of the liquid. If the evaluation frequency is less than 100 kHz, skin effects would be negligible. This paper proposes sensor that consists of two cylindrical sensors, a solenoid coil and a cylindrical capacitor. For...
The performance of parallel electric field tunnel field-effect transistors (TFETs), in which band-to-band tunneling (BTBT) was initiated in-line to the gate electric field, was evaluated. The TFET was fabricated by inserting a parallel-plate tunnel capacitor between heavily doped source wells and gate insulators. Analysis using a distributed-element circuit model indicated there should be a limit...
A PVT tolerant PLL architecture which uses two on-chip digital calibration circuits to maintain loop transfer function is presented. Test chips with 9 conditions, MOSes, resistors and capacitors, were fabricated in a 90 nm CMOS technology. Experimental results show that the phase noise remains + 2dBc/Hz within 10 MHz offset under any PVT condition.
In this paper, the modeling technique of 3D MEMS structures with sinusoidal motion is proposed. This technique is a combination of the FDTD method and the body fitted grid generation technique. The numerical results of the field plot is shown for a MEMS capacitor with sinusoidal motion and demonstrate its unique computational advantages in the modeling of microwave devices and/or optical devices with...
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