A 3- to 5-GHz wideband array of connected dipoles with low cross polarization and wide-scan capability

D. Cavallo, A. Neto, G. Gerini, A. Micco, V. Galdi

Research output: Contribution to journalArticleAcademicpeer-review

51 Citations (Scopus)
2 Downloads (Pure)

Abstract

A wideband, wide-scan phased array of connected dipoles has been designed and fabricated. Measured results from a 7 7 prototype demonstrator are presented for experimental validation. In order to avoid common-mode resonances that typically affect this type of array, loop-shaped transformers are included in the feed network. The common-mode rejection implemented by these transformers allow maintaining the crosspolarization levels to values lower than ..10 dBs over a 30% relative bandwidth, for elevation angle up to 45 in all azimuth planes. The array exhibits a measured voltage standing-wave ratio (VSWR) lower than 2.5 from 3 to 5 GHz for broadside radiation. The VSWR maintains levels lower than 3 within a scan volume of 45 from broadside in all planes.
Original languageEnglish
Pages (from-to)1148-1154
Number of pages7
JournalIEEE Transactions on Antennas and Propagation
Volume61
Issue number3
DOIs
Publication statusPublished - 2013

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