Preliminary communication

Evaluation of the Radiated Power from Near-field Measurements Acquired via the Planar Wide-mesh Scanning

Francesco D’Agostino ; D.I.I.I.E., Università di Salerno
Claudio Gennarelli ; D.I.I.I.E., Università di Salerno
Rocco Guerriero ; D.I.I.I.E., Università di Salerno
Giovanni Riccio ; D.I.I.I.E., Università di Salerno
Catello Savarese ; DiT, Università di Napoli »Parthenope«

Abstract

A full procedure is developed in this paper for evaluating the power radiated by an antenna under test from a nonredundant number of near-field measurements collected by the innovative planar wide-mesh scanning. It can be applied for the antenna directivity evaluation whenever the power radiated by the antenna in
the backward half-space is negligible. Such a procedure makes use of a closed form formula for computing the total radiated power from the knowledge of the radiation intensity samples on the far-field sphere. These samples are determined via a probe compensated near-field — far-field transformation. An optimal sampling
interpolation formula is also used for their evaluation. The effectiveness of the proposed procedure is assessed by numerical simulations.

Keywords

directivity evaluation; NF—FF transformations; nonredundant sampling representations of electromagnetic fields; planar wide-mesh scanning

Hrčak ID:

25754

URI

https://hrcak.srce.hr/25754

Publication date:

15.5.2008.

Article data in other languages: croatian

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