Narang, N. and Dubey, S. K. and Negi, P. S. and Ojha, V. N. (2016) Design and characterization of microstrip based E-field sensor for GSM and UMTS frequency bands. Review of Scientific Instruments, 87 (12). ISSN 0034-6748

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Abstract

An Electric (E-) field sensor based on coplanar waveguide-fed microstrip antenna to measure E-field strength for dual-band operation at 914 MHz and 2.1 GHz is proposed, designed, and characterized. The parametric optimization of the design has been performed to obtain resonance at global system for mobile communication and universal mobile telecommunication system frequency band. Low return loss (-17 dB and -19 dB), appropriate gain (0.50 dB and 1.55 dB), and isotropic behaviour (directivity similar to 1 dB), respectively, at 914 MHz and 2.1 GHz, are obtained for probing application. Antenna factor (AF) is used as an important parameter to characterize the performance of the E-field sensor. The AF measurement is explained in detail and results are reported. Finally, using the designed E-field sensor, the E-field strength measurements are carried out in a transverse electromagnetic cell. The key sources of uncertainties in the measurement are identified, evaluated, and incorporated into the final results. The measurement results are compared with theoretical values, which are found in good agreement. For comparative validation, the results are evaluated with reference to an already calibrated commercially available isotropic probe. Published by AIP Publishing.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s AIP Publishing.
Subjects:	Instruments/ Instrumentation Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	17 Nov 2017 07:42
Last Modified:	17 Nov 2017 07:42
URI:	http://npl.csircentral.net/id/eprint/2179

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