紧型高效能能源采集正负直流供电电压为无电池的CMOS接收器提供电压
Marwa Mansour1, Islam Mansour2
1Microelectronics Department, Electronics Research Institute (ERI), El Nozha, Cairo, 11843, Egypt. marwa_mansour@eri.sci.eg.
Scientific reports
|August 30, 2023
概括
本研究引入了新型的多频段整流器,用于高效的能量采集,为无线电频率接收器提供正和负直流电压. 这些紧的设计实现了高转换效率,为毫米波应用提供了实际的功率解决方案.
科学领域:
- 电气工程 电气工程
- 射频和微波工程 射频和微波工程
- 收集能源 收集能源
背景情况:
- 收获无线电频率 (RF) 能量需要低功耗电子产品高效的直流功率转换.
- 传统的整流器通常在低输入功率水平下难以实现多频段运行和效率.
- 毫米波 (mm-wave) CMOS接收器需要稳定和特定的直流电源电压以实现最佳偏移.
研究的目的:
- 为了展示新的紧型,高效的多频段整流器,用于能源采集.
- 开发能够提供正负输出电压的整流器.
- 为了使收获的射频能量能够用于为毫米波CMOS接收器供电.
主要方法:
- 设计和实施新型系列和并行共振网络,用于850和1400 MHz的双频段运行.
- 集成高质量的正弦形微条电感器,质量因子>65.
- 开发一个正输出电压加倍电路和一个负电压整流电路.
主要成果:
- 阳性电压加倍器实现了59%的峰值转换效率,并为毫米波接收器在0dBm输入功率时偏移,在450uA提供1.1V.
- 负电压调整器的最大模拟效率为65%,并且在-10dBm输入功率下为门偏差提供了-0.5V.
- 两个整流器在指定的双频带中表现出稳定的运行,最大限度地减少阻抗变化和插入损失.
结论:
- 开发的多频段整流器为高效的射频能量采集提供了可行的解决方案.
- 这些整流器成功地为毫米波接收器提供必要的正负直流电压.
- 新的共振网络和电感器设计提高了性能,特别是在低功率水平.
相关概念视频
01:21DC Battery
824
A conductor needs to be a component of a path that creates a closed loop or full circuit to have a continuous current flowing through it. A current starts to flow if an electric field is created inside an isolated conductor that is not part of a full circuit. The conductor quickly develops a net positive charge at one end and a net negative charge at the other. These charges generate an electric field opposite the direction of the applied electric field, which reduces the current. Eventually,...
824
01:19DC Generator
814
An alternator converts mechanical energy into electrical energy that varies sinusoidally, resulting in AC current. Meanwhile, a DC generator converts mechanical energy into electrical energy, which are DC pulses with the same polarity. The construction of a DC generator is similar to that of an alternator, except that the pair of slip rings is replaced by a single split ring, also called a commutator. The commutator functions like a periodic rotary switch; it changes the contacts with the...
814
01:30RC Circuits: Charging A Capacitor
3.7K
A circuit containing resistance and capacitance is called an RC circuit. A capacitor is an electrical component that stores electric charge by storing energy in an electric field. Consider a simple RC circuit having a DC (direct current) voltage source ε, a resistor R, a capacitor C, and a two-way position switch. In the circuit, the capacitor can be charged or discharged depending on the position of the switch.
When the switch is moved to connect the battery, the circuit reduces to a simple...
When the switch is moved to connect the battery, the circuit reduces to a simple...
3.7K
01:23Voltage Doubler Circuit
651
A voltage doubler circuit integrates two main components: a clamping section and a rectifier section. The clamping section consists of a capacitor (C1) and a diode (D1), whereas the rectifier section is equipped with another diode (D2) and capacitor (C2). This circuit produces an output voltage with twice the amplitude of the sinusoidal input voltage.
651
01:12Energy Stored in a Capacitor
3.7K
When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.
3.7K
01:16Maximum Power Transfer
286
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
By substituting the entire circuit with...
286