The spiral antenna
2005; Linguagem: Inglês
10.1109/irecon.1960.1150893
Autores Tópico(s)Antenna Design and Optimization
ResumoA simplified description of the radiation mechanism of the spiral antenna is given, and the effects of the various parameters on the characteristics of the cavity-backed Archimedian spiral are discussed. Experimental data illustrating the effect of cavity diameter, cavity depth, conductor loading, and spiral rate of growth are offered as design guides. Finally, a spiral antenna and balun feed are described. Over an octave frequency range, ellipticity ratios of less than 3 db have been maintained over azimuth angles greater than \pm60 degrees, boresight errors have been virtually eliminated, and standing wave ratios of less than 2:1 have been realized.
Referência(s)