UHF Dickson 整流器的建模和效率优化,IET Circuits, Devices & Systems

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UHF Dickson 整流器的建模和效率优化
IET Circuits, Devices & Systems ( IF 1.0 ) Pub Date : 2016-11-01 , DOI: 10.1049/iet-cds.2015.0323
Kaveh Gharehbaghi ₁ , Özge Zorlu ₂ , Fatih Koçer ₁ , Haluk Külah _{1,

2}

Affiliation

本文介绍了一种用于 UHF Dickson 整流器的新的省时建模方法。由于计算时间非常短，该方法可以提供一种快速有效的替代标准瞬态仿真的方法。与文献中的类似工作相比，所提出的方法可以更好地估计产生的直流电压和功率转换效率。首次表达了一种准确的数学关系，包括非零反向电流，用于在覆盖广泛的射频幅度范围内找到 Dickson 整流器的开路负载电压。该模型使用峰值正向电流和负载电流之间的关系来开发输入到输出公式。不同于以往的作品，首次考虑了通道长度调制，使所提出的模型非常适合使用亚微米 CMOS 晶体管实现的 UHF Dickson 整流器。此外，所提出的模型考虑了二次效应，例如体效应和短通道效应，从而可以更准确地估计生成的输出直流电压。使用所提出的方法，工作在 900 MHz 的 Dickson 整流器在 0.18 µm CMOS 工艺中实现。观察到模拟结果、预测结果和测量结果之间的良好一致性。使用所提出的方法，工作在 900 MHz 的 Dickson 整流器在 0.18 µm CMOS 工艺中实现。观察到模拟结果、预测结果和测量结果之间的良好一致性。使用所提出的方法，工作在 900 MHz 的 Dickson 整流器在 0.18 µm CMOS 工艺中实现。观察到模拟结果、预测结果和测量结果之间的良好一致性。

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Modelling and efficiency optimisation of UHF Dickson rectifiers

This paper presents a new time-efficient modelling approach for UHF Dickson rectifiers. Due to the very low computation time, the approach can provide a quick and effective alternative to the standard transient simulations. The presented approach results in better estimation of the generated DC voltage and power conversion efficiency compared with the similar works in the literature. For the first time, an accurate mathematical relationship, including the non-zero reverse current, is expressed for finding the open load voltage of the Dickson rectifier while covering the broad range of RF amplitudes. The model uses the relation between the peak forward current and the load current to develop an input-to-output formula. Unlike the previous works, the channel length modulation is taken into consideration for the first time making the proposed model ideal for UHF Dickson rectifiers implemented with submicron CMOS transistors. Moreover, the proposed model takes secondary effects, such as the body effect and short-channel effects into account resulting in a more accurate estimation of the generated output DC voltage. Using the presented approach, a Dickson rectifier working at 900 MHz is implemented in a 0.18 µm CMOS process. Good agreement between simulation results, predicted results, and measurement results is observed.

更新日期：2016-11-01

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