This paper presents an active RF phase shifter, targeted towards 5G wireless systems, which uses an IQ vector modulator (IQVM) topology with a 10 bit cartesian codebook. The circuit is designed using 45 nm CMOS SOI technology. To generate the I and Q basis vectors for the IQVM, a tunable polyphase filter with a novel tuning mechanism is used, which allows operation over an octave of a frequency range, from 22 GHz to 40 GHz. The RF bandwidth of the proposed phase shifter is 2.5 GHz and can provide in excess of 8 dB of fine gain control over 360 degrees of phase shift. Active area occupied is 0.2 square millimeter. The total DC power consumed from 1 V supply is 36 mW.
Authors:
Sethi Alok, Aikio Janne P., Akbar Rehman, Hietanen Mikko, Rahkonen Timo, Pärssinen Aarno
Publication type:
A4 Article in conference proceedings
Place of publication:
2020 2nd 6G Wireless Summit (6G SUMMIT)
Keywords:
5G, CMOS, IQVM, millimeter wave, Phase shifter
Published:
13 May 2020
Full citation:
A. Sethi, J. P. Aikio, R. Akbar, M. Hietanen, T. Rahkonen and A. Pärssinen, “A 25 GHz Active Phase Shifter Using 10 bit Cartesian Control,” 2020 2nd 6G Wireless Summit (6G SUMMIT), Levi, Finland, 2020, pp. 1-5, doi: 10.1109/6GSUMMIT49458.2020.9083742
DOI:
https://doi.org/10.1109/6GSUMMIT49458.2020.9083742
Read the publication here:
http://urn.fi/urn:nbn:fi-fe2020070646922
