Fully Integrated Multimode Orbital Angular Momentum Wave Generation at 360 GHz Using SiGe BiCMOS

IF 4.1 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2025-01-06 DOI:10.1109/TMTT.2024.3522803

Wei Sun;Sidharth Thomas;Aydin Babakhani

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引用次数: 0

Abstract

This article presents a fully integrated multimode orbital angular momentum (OAM) transmitter using a circular slot cavity antenna, capable of concurrently operating three orthogonal OAM modes (

$|l_{\text {oam}}| =0$

, 1, and 2) while maintaining a common phase center. This allows the use of passive gain elements like lenses or reflectors for directivity enhancement. Additionally, the transmitter takes advantage of high-order cavity modes eliminating the complex multiphase feeding network. Detailed studies about the angular momentum (AM) of the radiated electromagnetic (EM) wave and the correlation between the antenna mode and OAM/SAM mode are provided in this article. The single-element transmitter is composed of a 120-GHz oscillator and a p-i-n diode frequency tripler interfacing with harmonic filtering networks. The transmitter can generate OAM waves at 360-GHz signal with a peak radiated power of −8.1 dBm and a dc-to-THz efficiency of 0.1%. It also exhibits a wide-frequency tuning range of 14.2%. The chip is fabricated in the GlobalFoundries 90-nm BiCMOS process. Apart from transmitter design, this work also introduces a method for measuring OAM amplitude and phase distribution that does not require Tx/Rx frequency and phase coherency, simplifying the measurement process and ensuring accurate characterization of OAM modes. Its ability to operate in multiple OAM modes simultaneously, combined with its compact and efficient design, highlights its potential for future secure high-capacity communication applications.

查看原文本刊更多论文

利用SiGe BiCMOS产生360 GHz全集成多模轨道角动量波

本文介绍了一种完全集成的多模轨道角动量（OAM）发射机，采用圆形槽腔天线，能够同时工作三个正交的OAM模式（$|l_{\text {OAM}}| =0$， 1和2），同时保持一个共同的相位中心。这允许使用无源增益元件，如透镜或反射器来增强指向性。此外，发射机利用高阶腔模式消除了复杂的多相馈电网络。本文对辐射电磁波的角动量（AM）以及天线模式与OAM/SAM模式的关系进行了详细的研究。单元件发射机由一个120 ghz振荡器和一个带谐波滤波网络的p-i-n二极管三频器组成。该发射机可产生360 ghz信号的OAM波，峰值辐射功率为- 8.1 dBm， dc-to-THz效率为0.1%。它还具有14.2%的宽频率调谐范围。该芯片采用GlobalFoundries的90纳米BiCMOS工艺制造。除了发射机设计之外，本工作还介绍了一种测量OAM振幅和相位分布的方法，该方法不需要Tx/Rx频率和相位相干性，从而简化了测量过程并确保了OAM模式的准确表征。它能够同时在多个OAM模式下工作，结合其紧凑高效的设计，突出了其未来安全高容量通信应用的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.