Patel, Kamlesh and Singh, Paramjeet and Patel, Sandhya M. and Ojha, V. N. (2020) Modified Calibration Coefficients of Two-Port CPW Standards with Superstrate Effects. Mapan, 35 (1). pp. 87-96. ISSN 0970-3950

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Abstract

Calibration standards are used for the calibration of a vector network analyzer to characterize the microwave components under test. For the direct characterization of coplanar waveguide components, two-port CPW open, short and line are proposed to complement the existing calibration techniques. The developed CPW standards are characterized in the frequency range of 10 MHz to 10 GHz. As these are planar structures, effects of small superstrates on the calibration coefficients of open and short are studied also. The CPW line has shown slight changes in impedance due to superstrates, whereas a few calibration coefficients of open and short standards showed dependence on superstrates. Similar observations are noted by improving the polynomial models of CPW open and short standards up to fifth and sixth order, respectively, which better matches for CPW standards. The reported results are helpful to estimate any change in the measurement uncertainty on using such calibration standards due to superstrates.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Springer Verlag.
Subjects:	Instruments/ Instrumentation Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	01 Apr 2022 09:50
Last Modified:	01 Apr 2022 09:50
URI:	http://npl.csircentral.net/id/eprint/4821

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