对于螺旋式慢波结构的THz辐射的集成合器
Shiva Hajitabarmarznaki1, Shelley A Scott2, Marcos Martinez-Argudo1
1Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.
ACS omega
|August 26, 2024
概括
研究人员开发了一种集成设备,用于表征晶圆上的慢波结构. 这一创新可能会导致紧的,具有成本效益的太赫兹移动波管放大器.
科学领域:
- 特拉赫兹 (THz) 技术的使用.
- 微波工程 微波工程 微波工程
- 半导体设备制造业 半导体设备制造业
背景情况:
- 描述慢波结构 (SWS) 通常需要切割和包装单个设备,增加成本和复杂性.
- 旅行波管 (TWT) 放大器对于高频应用至关重要,但通常面临尺寸和成本的限制.
- 晶圆级测试为设备开发和表征提供了更有效和更经济的方法.
研究的目的:
- 设计和演示一个集成的装置,用于SWS的晶圆上表征.
- 探索垂直集成天线和SWS用于THz TWT放大器的潜力.
- 为了实现高效的光束波相互作用研究,而无需单独的设备包装.
主要方法:
- 设计了一种集成装置,将同轴喇天线与自组装的螺旋慢波结构合起来.
- 在用于设备制造的在绝缘体 (SOI) 晶圆上使用了v槽.
- 专注于使冷参数和光束-波相互作用的晶圆层次表征成为可能.
主要成果:
- 成功设计了一种新的集成设备架构.
- 设计方便在晶圆上进行表征,可能减少制造步骤.
- 综合结构显示出开发紧和低成本THz TWT放大器的前景.
结论:
- 开发的集成装置使得缓波结构的晶圆层级特征能够高效地进行表征.
- 这种方法为紧且具有成本效益的太赫兹移动波管放大器铺平了道路.
- 天线和SWS的垂直集成是未来THz设备开发的有希望的策略.
相关概念视频
¹H NMR: Long-Range Coupling
1.7K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
1.7K
Standing Waves in a Cavity
886
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
886
Propagation Speed of Electromagnetic Waves
3.3K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.3K
Double Resonance Techniques: Overview
192
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...
192
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)
984
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
984
Spin–Spin Coupling Constant: Overview
899
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
899


