Performance analysis of a nanocolumn-RTD VCO for emerging THz wireless applications

Rafael Nobrega, Thiago Raddo, Ulysses Duarte, Ivan Glesk, Anderson Sanches, Murilo Loiola Loiola

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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The data rates which can be processed by integrated communication systems are increasing as the CMOS process and photonic technologies scale. Emerging bandwidth-hungry applications demand new solutions based on terahertz (THz)
systems. This work proposes a GaAs/AlAs nanocolumn-Resonant Tunneling Diode (Nano-RTD) device as a voltage-controlled oscillator (VCO) for frequency generation in the THz spectrum window, i.e., Y-band (325 – 500 GHz). A comprehensive semianalytical approach to evaluating the performance of the Nano-RTD VCO device is developed. The latter addresses the oscillation
frequency, maximum oscillation frequency, tuning range, output power, DC consumption power, and DC/AC conversion efficiency. Moreover, the oscillation stability of the designed device in the Y-band was numerically verified. Results shown that the device can operate in the Y-band (@ 500 GHz and 300 K), with a
very-low DC power consumption down to 0.16 mW, along with a good DC/AC conversion efficiency (2.4%). The Nano-RTD VCO is compatible with current CMOS fabrication technology and has a very compact footprint (2000 nm2). Finally, the device may be used as part of system solutions to satisfying emerging THz wireless applications such as in-body nano-communication, wireless nano-networks, and network-on-chip.
Original languageEnglish
Title of host publication2020 IEEE Latin-American Conference on Communications (LATINCOM)
Place of PublicationPiscataway, N.J.
Number of pages6
ISBN (Electronic)978-1-7281-8904-8
Publication statusPublished - 20 Nov 2020
EventIEEE Latin-American Conference on Communications -, online
Duration: 18 Nov 202020 Nov 2020


ConferenceIEEE Latin-American Conference on Communications
Abbreviated titleIEEE Latin Com Conference
Internet address


  • nanoculumn
  • resonant tuneling diode
  • voltage-controlled oscillator
  • THz applications


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