概括
我们开发了一种使用拓光子晶体创建可调节的太赫兹功率分隔器的新方法. 这项创新允许精确控制太赫兹系统中的信号分割,克服小型化挑战.
科学领域:
- 拓式光子学 拓式光子学
- 特拉赫兹 (THz) 技术的使用.
- 综合光子学 综合光子学
背景情况:
- 集成功率分隔器 (PD) 对太赫兹 (THz) 通信和雷达系统至关重要.
- 缩小THz设备往往会导致性能降低,特别是在急剧曲的情况下.
- 现有的THz功率分隔器具有任意分割比,很难制造.
研究的目的:
- 介绍芯片上拓THz功率分割器的设计方法,具有可定制的分割比率.
- 为了解决当前THz功率分隔器在小型化和性能方面的局限性.
- 为了实现强大的THz芯片上连接和高效的信号路由.
主要方法:
- 使用三层结构的谷锁光子晶体 (两个谷切尔恩数层和一个中间半金属层).
- 采用Jackiw-Rebbi模型来分析光子晶体的特征阻抗.
- 通过调整半金属层的宽度来调整功率分配比.
主要成果:
- 证明,通过改变半金属层宽度,可以精确控制特征阻抗和功率分割比.
- 通过模拟和实验验证设计方法,对1:1和4:9的功率分割比进行验证.
- 在尖的道上实现了高效的导航,表明了强大的性能.
结论:
- 拟议的设计方法允许创建具有任意分割比的拓THz功率分隔器.
- 这种方法克服了与THz系统中小型化和急剧曲相关的性能降低问题.
- 开发的技术为先进的通信和雷达应用提供了强大的THz芯片上连接.
相关概念视频
01:14Voltage Dividers
491
In electrical circuits, resistors can be connected in series, sequentially linked one after the other. In a series configuration, the same current flows through each resistor. Ohm's law is a fundamental principle to understand the behavior of resistors in series. It expresses the voltage across these resistors in terms of the current and resistance.
Kirchhoff's voltage law implies that the sum of the voltages across the resistors in series equals the source voltage. This means that the...
Kirchhoff's voltage law implies that the sum of the voltages across the resistors in series equals the source voltage. This means that the...
491
01:20Design Example: Capacitance Multiplier Circuit
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In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
718
01:20Power Factor Correction
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The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
159
01:23Voltage Doubler Circuit
492
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.
492
01:16Maximum Power Transfer
239
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...
239
01:16Biasing of P-N Junction
443
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
443