MMIC Design for Radiometer Receiver at 240 GHz in 0.13 μm SiGe BiCMOS Technology

M. Najmussadat*, Y. Tawfik, R. Ahamed, M. Varonen*, D. Parveg, A. Lamminen, P. Pursula, K. A.I. Halonen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

This paper introduces an MMIC radiometer receiver designed for integration into a 240 GHz radiometer receiver system using a 130-nm SiGe BiCMOS technology. The detector features an on-chip dipole antenna, an SPDT switch, a Low Noise Amplifier (LNA), a mixer, an IF amplifier, and a power detector. The resonator switch exhibits a measured minimum insertion loss of 4.2 dB, maximum isolation of 29 dB, and minimum input and output reflection coefficients of 16 dB and 20 dB, respectively. The LNA utilizes a 5 -stage cascode design, achieving a simulated gain of 28 dB at 240 GHz. The mixer, designed as a single-balanced second harmonic mixer, provides a simulated conversion gain of 0 dB. The IF amplifier, a 3 -stage differential cascode amplifier, can provide a simulated gain of 45 dB at its IF frequency. The power detector is designed using the Meyer topology for a high dynamic range contributing to the chip's ability to enhance radiometer resolution. Additionally, this paper also presents a free-space measurement conducted to verify the radiometer receiver's functionality. In the measurement, with a LO frequency set at 112 GHz, the detector provides an output voltage of 650 mV in response to an IF current of 43 mA, demonstrating its effective performance.

Original languageEnglish
Title of host publication2024 IEEE Nordic Circuits and Systems Conference, NORCAS 2024
Subtitle of host publicationProceedings
EditorsJari Nurmi, Joachim Rodrigues, Luca Pezzarossa, Viktor Aberg, Baktash Behmanesh
PublisherIEEE Institute of Electrical and Electronic Engineers
Number of pages5
ISBN (Electronic)9798331517663
DOIs
Publication statusPublished - 2024
MoE publication typeA4 Article in a conference publication
Event10th IEEE Nordic Circuits and Systems Conference, NORCAS 2024 - Lund, Sweden
Duration: 29 Oct 202430 Oct 2024

Conference

Conference10th IEEE Nordic Circuits and Systems Conference, NORCAS 2024
Country/TerritorySweden
CityLund
Period29/10/2430/10/24

Keywords

  • MMIC
  • Power detector
  • Radiometer
  • SiGe
  • System integration
  • THz

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