Mansour Marwa, Mansour Islam
Microelectronics Department, Electronics Research Institute (ERI), El Nozha, Cairo, 11843, Egypt.
Electrical Engineering Dept, Shoubra Faculty of Engineering, Benha University, Cairo, 11629, Egypt.
Sci Rep. 2023 Aug 30;13(1):14180. doi: 10.1038/s41598-023-41236-9.
In this paper, novel compact high-efficiency multi-band rectifiers that supply positive and negative output voltages are demonstrated for energy harvesting applications. The proposed voltage doubler circuits are used as real DC voltage supplies of radio frequency mm-wave CMOS receivers. Operating multi-band rectifiers have a complicated structure that required more resonance networks to force the rectifier to work in multi-band. Novel series and parallel resonance networks are implemented to force the rectifier to operate in dual-band at frequencies of 850 and 1400 MHz. The proposed resonance network eliminates the Schottky diode impedance variation as the input power or frequency changes and supports the impedance matching and minimizes the insertion loss. A novel high-quality sine-shape micro-strip inductor that obtains a quality factor above 65 over the frequency band from 200 to 1400 MHz and inductance equal to 14 ± 2 nH is designed to improve efficiency and enhance performance at low power levels. The first suggested RF voltage doubler rectifier with series resonance feedback between the input and cathode of the diode and parallel resonance operates at two frequency bands of 850 and 1400 MHz and obtains a peak conversion efficiency of 59%, a saturated output DC voltage is 2.5 V, and the conversion efficiency is 40% at RF-input-power of - 10 dBm. This voltage doubler achieves the required DC supply parameter (1.1 V and 450 uA) for biasing the mm-wave receiver at an RF input power of 0 dBm. Otherwise, the second suggested negative voltage rectifier has a maximum simulated conversion efficiency of 65%, saturated negative DC-voltage is - 3.5 V, and the conversion efficiency is 45% at an RF input power of - 10 dBm. The negative voltage rectifier obtains DC supply parameters (- 0.5 V and no current condition used for a gate bias) at - 10 dBm input power.
本文展示了用于能量收集应用的新型紧凑型高效多频段整流器，其可提供正负输出电压。所提出的倍压电路用作射频毫米波CMOS接收器的实际直流电压源。工作在多频段的整流器结构复杂，需要更多的谐振网络来迫使整流器在多频段工作。实现了新型串联和并联谐振网络，以迫使整流器在850和1400 MHz频率下工作在双频段。所提出的谐振网络消除了肖特基二极管阻抗随输入功率或频率变化的影响，支持阻抗匹配并使插入损耗最小化。设计了一种新型高品质正弦形微带电感，在200至1400 MHz频段内品质因数高于65，电感等于14±2 nH，以提高效率并在低功率水平下增强性能。第一个建议的射频倍压整流器，在二极管的输入和阴极之间具有串联谐振反馈且并联谐振，工作在850和1400 MHz两个频段，峰值转换效率为59%，饱和输出直流电压为2.5 V，在射频输入功率为 -10 dBm时转换效率为40%。该倍压器在射频输入功率为0 dBm时实现了为毫米波接收器偏置所需的直流电源参数（1.1 V和450 μA）。否则，第二个建议的负压整流器最大模拟转换效率为65%，饱和负直流电压为 -3.5 V，在射频输入功率为 -10 dBm时转换效率为45%。该负压整流器在 -10 dBm输入功率下获得直流电源参数（-0.5 V且无电流条件用于栅极偏置）。
