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 language | English |
---|---|
Title of host publication | 2024 IEEE Nordic Circuits and Systems Conference, NORCAS 2024 |
Subtitle of host publication | Proceedings |
Editors | Jari Nurmi, Joachim Rodrigues, Luca Pezzarossa, Viktor Aberg, Baktash Behmanesh |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Number of pages | 5 |
ISBN (Electronic) | 9798331517663 |
DOIs | |
Publication status | Published - 2024 |
MoE publication type | A4 Article in a conference publication |
Event | 10th IEEE Nordic Circuits and Systems Conference, NORCAS 2024 - Lund, Sweden Duration: 29 Oct 2024 → 30 Oct 2024 |
Conference
Conference | 10th IEEE Nordic Circuits and Systems Conference, NORCAS 2024 |
---|---|
Country/Territory | Sweden |
City | Lund |
Period | 29/10/24 → 30/10/24 |
Keywords
- MMIC
- Power detector
- Radiometer
- SiGe
- System integration
- THz