A 129.9-141.1 GHz VCO Quadrature Frequency Generator Using Frequency Division and Mixing

Koch M, Löffler J, Kohl C, Engelmann A, Breun S, Weigel R, Franchi N (2026)

Publication Language: English

Publication Status: Accepted

Publication Type: Conference contribution, Conference Contribution

Future Publication Type: Conference contribution

Publication year: 2026

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 251-254

Conference Proceedings Title: GEMIC 2026 - 17th German Microwave Conference

Event location: Karlsruhe

ISBN: 9798319519559

DOI: 10.1109/GeMiC71240.2026.11516479

Abstract

This paper presents a local oscillator signal generation scheme at D-band frequencies for homodyne transmitters and transceivers that require quadrature phases and reduced susceptibility to oscillator pulling by the integrated power amplifiers. A voltage-controlled oscillator at two-Thirds of the output frequency is used to drive a static frequency divider that generates quadrature phases. Based on the divider outputs, subsequent mixing stages generate quadrature D-band signals. Individual characterization of the W-band oscillator core shows a tuning range from 86.7 to 94.3 GHz while the divider-based quadrature generator's input frequency range covers the complete W-band and achieves < 2° divider output phase error at most frequencies. The oscillator-enabled quadrature generator operates over a 11.2 GHz (8.2 %) tuning range from 129.9 to 141.1 GHz, achieving a phase noise of-78 dBc/Hz at 1 MHz offset and a quadrature phase error of 6.5°. The circuits are fabricated using 130 nm BiCMOS technology.

Authors with CRIS profile

Manuel Koch Lehrstuhl für Intelligente Technische Elektronik und Systeme Jens Löffler Lehrstuhl für Intelligente Technische Elektronik und Systeme Chiara Kohl Lehrstuhl für Intelligente Technische Elektronik und Systeme Andre Engelmann Lehrstuhl für Intelligente Technische Elektronik und Systeme Sascha Breun Lehrstuhl für Intelligente Technische Elektronik und Systeme Robert Weigel Lehrstuhl für Technische Elektronik (LTE) Norman Franchi Lehrstuhl für Intelligente Technische Elektronik und Systeme

How to cite

APA:

Koch, M., Löffler, J., Kohl, C., Engelmann, A., Breun, S., Weigel, R., & Franchi, N. (2026). A 129.9-141.1 GHz VCO Quadrature Frequency Generator Using Frequency Division and Mixing. In GEMIC 2026 - 17th German Microwave Conference (pp. 251-254). Karlsruhe: Institute of Electrical and Electronics Engineers Inc..

MLA:

Koch, Manuel, et al. "A 129.9-141.1 GHz VCO Quadrature Frequency Generator Using Frequency Division and Mixing." Proceedings of the 17th German Microwave Conference, GEMIC 2026, Karlsruhe Institute of Electrical and Electronics Engineers Inc., 2026. 251-254.

BibTeX: Download