- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 AEIT International Annual Conference - Bari, Italy (2018.10.3-2018.10.5)] 2018 AEIT International Annual Conference - Solid State Rectifier as Terahertz Detector
摘要： We present a new solid state rectifier, compatible with CMOS integrated circuit, suitable to direct conversion of terahertz radiation, at room temperature. The structure creates a rectenna, consists in a truncated conical helix extruded from a planar spiral and connected to a nanometric metallic whisker at one of its edges. The whisker reaches the gate of a MOS-FET transistor. Rectification can be obtained by the self-mixing effect occurring into the plasma waves generate underneath the gate. The proposed solution is easy to integrate with existing imaging systems. No need of scaling toward very scaled and costly technological node is required, since the plasma wave are not dependent on the gate extension. The remaining electronics should only provide the necessary integrated readout. A theoretical explanation of the self-mixing process, and TCAD simulations showing the onset of the DC potential are presented. An additional detector structure, the double barrier rectifier, is also presented for comparison.
关键词： MOS-FET,rectifying antenna (rectenna),Image detector,CMOS,THz antennas
更新于2025-09-23 15:23:52
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Small-sized visual angular displacement measurement technology
摘要： Visual angular displacement measurement methods are a popular approach to photoelectric displacement measurement technology, as they provide significantly higher precision than traditional angular displacement measurement methods. This paper proposes a small-sized high-precision angular displacement measurement technology based on the sub-pixel level varying principle. The small-sized visual angular displacement measurement mechanism is first established without lens near-field imaging. A coding method based on the varying principle is then developed in order to decrease the ruled grating density. A sub-pixel angular displacement calculating model based on uniline pix is built to decrease the pixel data and enhance the frequency response of the measurement system; the corresponding data combination and correction algorithms are proposed. The error analysis is proposed. Tests on an angular displacement measurement device prototype showed a resolution of 20-bit and precision of 20.400. The device also outperformed traditional angular displacement measuring devices of similar size, but features low ruled grating density and miniaturization. The results presented here may thus provide a workable foundation for further research on small-size visual angular displacement measurement devices.
关键词： High-precision,Image detector,High-resolution,Varying principle
更新于2025-09-23 15:22:29