منابع مشابه
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...
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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...
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The superiority of multiple-input multiple-output (MIMO) radars over conventional radars has been recently shown in many aspects. These radars consist of many transmitters and receivers located far from each other. In this scenario, the MIMO radar is able to observe the targets from different directions. One of the advantages of these radars is exploitation of Doppler frequencies from different...
متن کاملElectronic Vector - Network - Analyzer Verification ■
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...
متن کاملDetermination of Permeability from Impedance Measurement Using Vector Network Analyzer
This study treats the optimised one-port (reflection coefficient) and two-port (shunt-through/series-through) measurement methods for complex permeability determination of solid soft magnetic materials using a vector network analyzer (VNA) at frequencies from 9 kHz to 6.5 GHz. The principle of measurement methods, the relationships of measured phasor voltage ratio (Sparameter) to complex impeda...
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ژورنال
عنوان ژورنال: Electronics
سال: 2019
ISSN: 2079-9292
DOI: 10.3390/electronics8121447