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Wideband stripline fed tapered slot antenna with integral coupler for wide scan angle active phased array

Nalumakkal, Priya Suresh and Reddy, K Maheshwara and Vinoy, K J and Shukla, Saurabh (2018) Wideband stripline fed tapered slot antenna with integral coupler for wide scan angle active phased array. In: IET MICROWAVES ANTENNAS & PROPAGATION, 12 (9). pp. 1487-1493.

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Official URL: https://dx.doi.org/10.1049/iet-map.2017.0784

Abstract

A stripline fed tapered slot antenna (STSA) with integral coupler operating as an active array element over 1.5 octave bandwidth is presented. The proposed STSA with integral coupler features wideband transition which allows a direct 50 stripline feed and enables the coupler to be integrated along with the feed. The coupler helps in taking a sample of signal for online performance monitoring and active phased array calibration. The measured results of antenna element have exhibited good radiation pattern performance with low cross-polarisation in principal plane and low beam squint. Using this, a 16-element H-plane linear phased array antenna designed for the frequency range of 6-18GHz and azimuth scan coverage of 60 degrees is also presented. The active reflection coefficient of the array is calculated from measured mutual coupling coefficients and the array pattern over different scan angles is demonstrated. The grating lobe free scan coverage of 60 degrees is obtained. The antenna array finds application in airborne systems.

Item Type: Journal Article
Additional Information: Copyright of this article belong to INST ENGINEERING TECHNOLOGY-IET, MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Depositing User: Id for Latest eprints
Date Deposited: 24 Jul 2018 14:55
Last Modified: 24 Jul 2018 14:55
URI: http://eprints.iisc.ac.in/id/eprint/60277

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