Abstract
This review paper reports the prerequisites of a monolithic integrated terahertz (THz) technology capable of meeting the network capacity requirements of beyond-5G wireless communications system (WCS). Keeping in mind that the terahertz signal generation for the beyond-5G networks relies on the technology power loss management, we propose a single computationally efficient software design tool featuring cutting-edge optical devices and high speed III–V electronics for the design of optoelectronic integrated circuits (OEICs) monolithically integrated on a single Indium-Phosphide (InP) die. Through the implementation of accurate and SPICE (Simulation Program with Integrated Circuit Emphasis)-compatible compact models of uni-traveling carrier photodiodes (UTC-PDs) and InP double heterojunction bipolar transistors (DHBTs), we demonstrated that the next generation of THz technologies for beyond-5G networks requires (i) a multi-physical understanding of their operation described through electrical, photonic and thermal equations, (ii) dedicated test structures for characterization in the frequency range higher than 110 GHz, (iii) a dedicated parameter extraction procedure, along with (iv) a circuit reliability assessment methodology. Developed on the research and development activities achieved in the past two decades, we detailed each part of the multiphysics design optimization approach while ensuring technology power loss management through a holistic procedure compatible with existing software tools and design flow for the timely and cost-effective achievement of THz OEICs.
Highlights
IntroductionThe overall objective would be to develop high-performance terahertz-wave transmitter modules based on a disruptive monolithic opto-electronic integrated circuit (OEIC), which can be installed in radio base stations to directly convert the optical signals coming from midhaul/fronthaul networks into radio signals
Double heterojunction bipolar transistors (DHBTs) on InP substrate have led the frequency race for the electronic amplification of >100 GHz signals and amplifier circuits offering high output power density [1]
Review, we we addressed of of monolithic inintegrated circuit design for future applications in beyond-5G
Summary
The overall objective would be to develop high-performance terahertz-wave transmitter modules based on a disruptive monolithic opto-electronic integrated circuit (OEIC), which can be installed in radio base stations to directly convert the optical signals coming from midhaul/fronthaul networks into radio signals. This OEIC technology will pave the way for beyond 5G communication technologies, by delivering compact and efficient modules at room temperature. Significant progress has been made on this subject [6]
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