About one way to decrease the directivity of rectenna spurious radiation
DOI:
https://doi.org/10.1109/ICATT.1999.1236301Abstract
One of the promising alternative directions of modern energetics development is the creation of systems transmitting power by a focused microwave beam. The terminal of such a system is the rectenna (antenna-rectifier) that receives the microwave energy and converts it to the one of direct current. The rectenna is designed as the antenna array of a number of receiving-rectifying elements (RREs). Every RRE consists of an antenna loaded on a microwave rectifier with Schottky barrier diodes. The conversion of microwave energy in the rectenna is of non-linear nature and, consequently, is accompanied by the radiation at high-order harmonic frequencies [1].
In the paper the rather simple technique to decrease the spurious radiation directivity of a rectenna array is proposed. The principle of the technique consists in creation of such conditions when the neighboring rectenna modules or neighboring lines of RREs in a module are excited anti-phasely at higher harmonics frequencies. The proposed technique efficiency in the decrease of the spurious rectenna radiation have been shown by results of numerical and experimental investigations.
References
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Shifrin, Y.; Luchaninov, A.; Shokalo, V.; Sherbina A. Rectennas. Proc. of JINA, Nov. 1994, Nice, France. Nice, 1994, p. 394-397.
Luchaninov, A.I.; Shifrin, Y.S. Antennas with non-linear elements. Ch. IX in Reference Book on Antennas Technique, Vol. 1. Moscow: IPRZhR, 1997 [in Russian, ed. by L.D. Bakhrakh, E.G. Zelkin].
