Article 2022 · 9 citations

Determination of Propagation Constants and Wave Impedance of Non-Reciprocal Networks From Position-Insensitive Waveguide Measurements

Hasar, Ugur C., Kaya, Yunus, Izginli, Mucahit, Ozturk, Hamdullah, Barroso, Joaquim J., Ramahi, Omar M., Ertugrul, Mehmet

Abstract

A microwave method is proposed to determine the forward and backward propagation constants (gamma ⁺ and gamma ⁻) and the wave impedance ( $z_{w}$ ) of reciprocal and non-reciprocal microwave networks whose positions are not known within their measurement cells (position-insensitive). The proposed method relies purely on analytical expressions and can also evaluate the reference plane transformation distances. Scattering parameter measurements at the X-band (8.2-12.4 GHz) of a reciprocal network (a waveguide straight) and a non-reciprocal network (a microwave phase shifter) arbitrarily positioned into their measurement cells were conducted to retrieve gamma ⁺, gamma ⁻, and $z_{w}$ for validation of our method and testing its position-insensitive property. The importance of the method becomes apparent when compared to conventional methods whose accuracy is based on precise determination of the reference planes.

Keywords

Position measurement Impedance Frequency measurement Microwave measurement Electromagnetic waveguides Microwave theory and techniques Calibration Non-reciprocal networks position-insensitive propagation constant transmission and reflection methods wave impedance TRANSMISSION-REFLECTION METHOD REFERENCE-PLANE INVARIANT COMPLEX PERMITTIVITY DETERMINATION CONSTITUTIVE PARAMETERS BROAD-BAND ELECTROMAGNETIC PROPERTIES LINE PERMITTIVITY UNIQUE RETRIEVAL PERMEABILITY ACCURATE

WoS Categories

Engineering, Electrical & Electronic Telecommunications

Citation

Journal: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
Year: 2022
Volume: 70
Issue: 5
Pages: 2723-2731
ISSN: 0018-9480
eISSN: 1557-9670
DOI: 10.1109/TMTT.2022.3157718
WoS UID: WOS:000770584100001

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