Load-Pull Effect on Radiation Characteristics of Active Antennas

The design of array antennas including nonlinear devices requires specific simulation tools. These tools should combine the electromagnetic modeling of passive components with an appropriate description of nonlinearities potentially induced by the active circuitry. An iterative approach is proposed...

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Veröffentlicht in:	IEEE antennas and wireless propagation letters 2008, Vol.7, p.550-552
Hauptverfasser:	Romier, M., Barka, A., Aubert, H., Martinaud, J.-P., Soiron, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna array mutual coupling Antenna arrays Circuit simulation Computational modeling domain decomposition method Frequency Isolators Iterative methods load-pull effects Loaded antennas Microwave antenna arrays nonlinear circuits polyharmonic distortion model Power amplifiers radar radiation patterns telecom Transmitting antennas
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Beschreibung
Zusammenfassung:	The design of array antennas including nonlinear devices requires specific simulation tools. These tools should combine the electromagnetic modeling of passive components with an appropriate description of nonlinearities potentially induced by the active circuitry. An iterative approach is proposed here for the simulation of transmitting arrays, including power amplifiers, taking into account distortion and varying antenna loads induced by coupling effects. Our approach predicts, for the first time at our knowledge, a significant effect of nonlinearity on the sidelobe levels of the active array antennas.
ISSN:	1536-1225 1548-5757
DOI:	10.1109/LAWP.2008.2005652