D-Band Reciprocal Passive Design and Analysis Based on Consecutive Single-Ended Two-Port Measurements

IEEE Transactions on Microwave Theory and Techniques 2026 Open access

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Authors: Remco Schalk, Maarten Lont, Thiago H. Both, Luuk F. Tiemeijer, Daan Dekker, Mark P. van der Heijden, Marios Neofytou, Georgi I. Radulov, Vojkan Vidojković, Kostas Doris
DOI: 10.1109/tmtt.2026.3651686
Cited by: 0

Abstract

This work proposes and analyzes a methodology to characterize the scattering parameters of multiport passives up to 170 GHz by consecutive single-ended two-port measurements. The generalized methodology is based on duplicating the device under test with linear combinations of load and open terminations to create a system of equations that can be solved for full characterization. The methodology is applied to a D-band differential four-port quadrature hybrid (QH) coupler designed in 22-nm FDSOI technology. Measurement results are presented for even- and odd-mode and differential-mode over five samples. Moreover, a quantitative and qualitative study is presented to highlight the method’s sensitivity to variability in measurement, device under test, and terminations.

Fields of Study & Subjects

Microwave Engineering and Waveguides Radio Frequency Integrated Circuit Design Microwave and Dielectric Measurement Techniques

Publication details

Journal / source
IEEE Transactions on Microwave Theory and Techniques
Volume
74
Issue
4
Pages
3666–3676
Publication date
14 January 2026
Language
EN