Erratum: “Vector network analyzer ferromagnetic resonance spectrometer with field differential detection” [Rev. Sci. Instrum. 89, 053901 (2018)]

Instrumentation for Ferromagnetic Resonance Spectrometer

Perspective: Local ferromagnetic resonance measurement techniques: "Invited Review Article: Microwave spectroscopy based on scanning thermal microscopy: resolution in the nanometer range" [Rev. Sci. Instrum. 79, 041101 (2008)].

According to Vonsovskii, ferromagnetic resonance FMR was unknowingly discovered by Arkad’yev in 1911. The standard citation for the experimental discovery of FMR is to Griffiths for his observation of the rather broad absorption profile and an “anomalous” electron paramagnetic resonance EPR field for in-plane magnetized electroplated ferromagnetic films. One year later, Kittel explained the ano...

Comment on "MEMS-based high speed scanning probe microscopy" [Rev. Sci. Instrum. 81, 043702 (2010)].

In a recent article, Disseldorp et al. [Rev. Sci. Instrum. 81, 043702 (2010)] present a micromachined z-scanner for scanning probe microscopy (SPM). The scanner comprises a micromachined electrostatically actuated membrane anchored to its substrate with crab-leg flexures. This structure is used as a fast actuator specifically for atomic force microscope and scanning tunneling microscope. The au...

Vector-Network-Analyzer Calibrations

We develop an uncertainty analysis that captures the dominant sources of measurement error in state-of-the-art WM-380 (WR 1.5) rectangular-waveguide vector-network-analyzer measurements over the frequency range 500–750 GHz. We use the analysis to assess thru-reflect-line, thru-short-match, and thru-short-radiating-open calibrations. The comparison shows that thru-short-match and thru-short-radi...

Low-cost Vector Network Analyzer for Biomedical Applications

A low-cost and portable vector network analyzer (VNA) which covered operating frequency between 1MHz to 3GHz is used for vector reflection coefficient and standing wave ratio (swr) of the various microstrip antennas. This paper presents measurements of various ultra wideband (uwb) microstrip antennas for applications in biomedical field. Selection of antenna is an important key for detection of...