Journal ArticleDOI
A SiGe Terahertz Heterodyne Imaging Transmitter With 3.3 mW Radiated Power and Fully-Integrated Phase-Locked Loop
Ruonan Han,Chen Jiang,Ali Mostajeran,Mohammad Javad Emadi,Hamidreza Aghasi,Hani Sherry,Andreia Cathelin,Ehsan Afshari +7 more
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TLDR
To the authors' best knowledge, this work presents the highest radiated power and DC-to-THz radiation efficiency in silicon-based terahertz radiating sources.Abstract:
A high-power 320 GHz transmitter using 130 nm SiGe BiCMOS technology ( $f_{T}/f_{\max} =$ 220/280 GHz) is reported. This transmitter consists of a 4 × 4 array of radiators based on coupled harmonic oscillators. By incorporating a signal filter structure called return-path gap coupler into a differential self-feeding oscillator, the proposed 320 GHz radiator simultaneously maximizes the fundamental oscillation power, harmonic generation, as well as on-chip radiation. To facilitate the TX-RX synchronization of a future terahertz (THz) heterodyne imaging chipset, a fully-integrated phase-locked loop (PLL) is also implemented in the transmitter. Such on-chip phase-locking capability is the first demonstration for all THz radiators in silicon. In the far-field measurement, the total radiated power and EIRP of the chip is 3.3 mW and 22.5 dBm, respectively. The transmitter consumes 610 mW DC power, which leads to a DC-to-THz radiation efficiency of 0.54%. To the authors' best knowledge, this work presents the highest radiated power and DC-to-THz radiation efficiency in silicon-based THz radiating sources.read more
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Journal ArticleDOI
Terahertz integrated electronic and hybrid electronic–photonic systems
TL;DR: This Review Article examines the development of terahertz integrated electronic and hybrid electronic–photonic systems, considering, in particular, advances that deliver important functionalities for applications in communication, sensing and imaging.
Journal ArticleDOI
Terahertz Imaging and Sensing Applications With Silicon-Based Technologies
TL;DR: This paper reviews the progress in THz IC research and investigates several realizations of THz imaging and sensing applications with silicon-based components regarding their motivation, system performance, and challenges.
Journal ArticleDOI
An Overview of the Development of Antenna-in-Package Technology for Highly Integrated Wireless Devices
Yueping Zhang,Junfa Mao +1 more
TL;DR: AiP technology has emerged as the mainstream antenna and packaging technology for various mmWave applications, and some recommendations on research topics are presented to further the state of the art of AiP technology.
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An Overview of Signal Processing Techniques for Terahertz Communications
TL;DR: This tutorial overviews classical problems of waveform design and modulation, beamforming and precoding, index modulation, channel estimation, channel coding, and data detection in THz transceiver systems and reconfigurable intelligent surfaces, which are vital to overcoming the distance problem at very high frequencies.
Journal ArticleDOI
An Overview of Signal Processing Techniques for Terahertz Communications
TL;DR: In this article, the authors provide a comprehensive overview of waveform design and modulation, beamforming and precoding, index modulation, channel estimation, channel coding, and data detection for terahertz (THz)-band communications.
References
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Journal ArticleDOI
Cutting-edge terahertz technology
TL;DR: An overview of the status of the terahertz technology, its uses and its future prospects are presented in this article, with a focus on the use of the waveband in a wide range of applications.
Journal ArticleDOI
A Note on a Simple Transmission Formula
TL;DR: In this paper, a simple transmission formula for a radio circuit is derived, and the utility of the formula is emphasized and its limitations are discussed, as well as its utility and limitations.
Journal ArticleDOI
A Study of Locking Phenomena in Oscillators
TL;DR: In this paper, a differential equation is derived which gives the oscillator phase as a function of time, and with the aid of this equation, the transient process of "pull-in" as well as the production of distorted beat note are described in detail.
Journal ArticleDOI
Terahertz quantum-cascade lasers
TL;DR: In this paper, the state-of-the-art and future prospects for terahertz quantum-cascade laser systems are reviewed, including efforts to increase their operating temperatures, deliver higher output powers and emit longer wavelengths.
Journal ArticleDOI
A study of injection locking and pulling in oscillators
TL;DR: In this paper, an identity obtained from phase and envelope equations is used to express the requisite oscillator nonlinearity and interpret phase noise reduction, and the behavior of phase-locked oscillators under injection pulling is also formulated.
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