On the use of sub-harmonic mixer in sliding-IF architecture for mm-Wave/THz transceivers

This paper discusses methods to implement a sub-THz transceiver for 300 GHz band with minimal LO frequency. An existing sub-harmonic mixer, used previously in direct conversion transceiver, is applied in a sliding-IF mixer architecture. Sub-harmonic mixer with sliding IF architecture is envisioned to further reduce the need of higher LO frequency for upconversion. In this aspect, two architectures are studied by spectral analysis and further verified through circuit simulator. The first has a problem with overlapping sidebands, making it unsuitable for non-symmetrical double sideband modulations. On the other hand, the second architecture manages to up-convert signals up to f o, using a single LO frequency of f o /3.

Authors:
Singh Sumit Pratap, Nokandi Mostafa Jafari, Rahkonen Timo, Pärssinen Aarno

Publication type:
A4 Article in conference proceedings

Place of publication:
2020 2nd 6G Wireless Summit (6G SUMMIT)

Keywords:
Gilbert Cell, Mixer, mm-Wave, sliding-IF, Sub-harmonic, THz, Transceiver

Published:

Full citation:
S. P. Singh, M. J. Nokandi, T. Rahkonen and A. Pärssinen, “On the use of sub-harmonic mixer in sliding-IF architecture for mm-Wave/THz transceivers,” 2020 2nd 6G Wireless Summit (6G SUMMIT), Levi, Finland, 2020, pp. 1-4, doi: 10.1109/6GSUMMIT49458.2020.9083758

DOI:
https://doi.org/10.1109/6GSUMMIT49458.2020.9083758

Read the publication here:
http://urn.fi/urn:nbn:fi-fe2020100277668