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...

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...

118 October 2009 Digital Object Identifier 10.1109/MMM.2009.933595 The National Institute of Standards and Technology (NIST) recently introduced a new electronic approach for verifying microwave vectornetwork-analyzer (VNA) calibrations with a single computer-controlled electronic verifi cation artifact. The verifi cation results are captured in easy-tounderstand performance metrics that, unlik...

Ensuring a high accuracy when measuring the parameters of devices under testing is an important task conducting research in terahertz-frequency range. The purpose this paper practical study thermal drift errors vector network analyzer using low-terahertz-frequency extender modules. For this, change measurement error, which function time, was analysed system, based on Keysight N5247B and coverin...