A broadband and high-sensitivity permeability measurement system that covers 10 MHz–20 GHz was previously developed and named the transformer coupled permeameter (TC-Perm). This paper describes the modifications of the TC-Perm system to further extend the operation frequency range on both the high and low frequency sides. In the previous system, the high frequency limit was set by a large notch appearing at around 22 GHz, which was considered to be caused by the excitation of two unwanted modes. In the new system, the jig design was modified to have a back ground plane and vias to suppress these unwanted modes, which resulted in a clean transmission characteristic over the entire frequency range up to 44 GHz. The low frequency limit is determined by the noise figure (NF) of the vector network analyzer input, which was measured to be ∼35 dB in the previous system configuration. The new system employed a low noise amplifier and analog switches to improve the NF to be 2.7 dB below 100 MHz. As a result of these modifications, the operation frequency range of the new TC-Perm system was extended to cover 1 MHz–44 GHz, which is sufficient for characterizing magnetic materials used in noise suppression sheets targeting fifth-generation millimeter-wave (5G mmWave) wireless communication.
Skip Nav Destination
Article navigation
July 2023
Research Article|
July 14 2023
Modification of transformer coupled permeameter for frequency extension
S. Tamaru
S. Tamaru
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
Reserach Center for Emerging Computing Technologies (RCECT), National Institute of Advanced Industrial Science and Technology (AIST)
, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
a)Author to whom correspondence should be addressed: shingo.tamaru@aist.go.jp
Search for other works by this author on:
a)Author to whom correspondence should be addressed: shingo.tamaru@aist.go.jp
Rev. Sci. Instrum. 94, 073901 (2023)
Article history
Received:
January 20 2023
Accepted:
July 01 2023
Citation
S. Tamaru; Modification of transformer coupled permeameter for frequency extension. Rev. Sci. Instrum. 1 July 2023; 94 (7): 073901. https://doi.org/10.1063/5.0143265
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Pay-Per-View Access
$40.00
Citing articles via
Overview of the early campaign diagnostics for the SPARC tokamak (invited)
M. L. Reinke, I. Abramovic, et al.
An instrumentation guide to measuring thermal conductivity using frequency domain thermoreflectance (FDTR)
Dylan J. Kirsch, Joshua Martin, et al.
Uniform microwave field formation for control of ensembles of negatively charged nitrogen vacancy in diamond
Oleg Rezinkin, Marina Rezinkina, et al.
Related Content
Permeameter and solenoid measurements of Epstein strips of electrical steels
Rev. Sci. Instrum. (September 2023)
Improved accuracy thin film permeability extraction for a microstrip permeameter
J. Appl. Phys. (January 2013)
Characterization of grain boundary conductivity of spin-sprayed ferrites using scanning microwave microscope
J. Appl. Phys. (January 2014)
Magnetodielectric effect in trilayered Co 65 Fe 35 B 20 / PVDF / Co 65 Fe 35 B 20 composite materials. Prediction and measurement for tunable microwave applications
J. Appl. Phys. (May 2010)
Structural and soft magnetic properties of a new nanocrystalline Fe-based and B-free alloy
J. Appl. Phys. (January 2008)