University of Oulu

N. Shabanzadeh et al., "A Study of the Effects Limiting the Responsivity of A Broadband THz Power Detector with On-chip Antenna in 0.13μm SiGe HBT Technology," 2022 IEEE Nordic Circuits and Systems Conference (NorCAS), Oslo, Norway, 2022, pp. 1-5, doi: 10.1109/NorCAS57515.2022.9934190

A study of the effects limiting the responsivity of a broadband THz power detector with on-chip antenna in 0.13μm SiGe HBT technology

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Author: Shabanzadeh, Negar1; Nokandi, Mostafa Jafari1; Rasilainen, Kimmo2;
Organizations: 1Circuits and Systems Research Unit, University of Oulu, Finland
2Center for Wireless Communications, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.6 MB)
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Language: English
Published: IEEE, 2022
Publish Date: 2023-03-23


This paper presents a broadband THz power detector with on-chip antenna implemented in 0.13μm SiGe HBT technology. The detector has a center frequency of 280 GHz, bandwidth of 64 GHz and responsivity of about 1 A/W. The nonlinear response of the power detector is analyzed and un-desirable linearization effects are discussed. High DC current gain and low-impedance base biasing are shown to improve the conversion gain, but the dominant gain-reducing effect is the feedback from the emitter resistance. The dynamic range and noise sources are also explained.

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ISBN: 979-8-3503-4550-6
ISBN Print: 979-8-3503-4551-3
Pages: 1 - 5
DOI: 10.1109/norcas57515.2022.9934190
Host publication: 2022 IEEE Nordic Circuits and Systems Conference (NorCAS)
Conference: IEEE Nordic Circuits and Systems Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work has been supported by Academy of Finland grant 243032281 and 6Genesis Flagship project (grant 346208).
Academy of Finland Grant Number: 346208
Detailed Information: 346208 (Academy of Finland Funding decision)
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