Abstract: A circularly polarized antenna has bays stacked at spacings of less than one wavelength in order to have a broadband SWR characteristic and to minimize radiation along a supporting mast axis. Vertical stubs are used to increase the circularity of the horizontal pattern and to improve the axial ratio.

Abstract: A circularly polarized antenna system adapted to provide a desired radiation pattern about a support mast using four horizontal radiating elements spaced at 90.degree. intervals about the support mast and by four vertically polarized dipoles with each vertical dipole mounted vertically spaced from the four horizontally polarized radiating elements. The four vertically polarized dipoles are spaced at 90.degree. intervals about the mast. Both the horizontal radiators and the vertical dipoles are fed in rotating phase. Each of the four vertically polarized dipoles comprises a pair of dipole arms which arms are bent to form a V with the vertex pointing toward the mast to increase the radiation in the plane orthogonal to the lengthwise axis of the mast and to decrease the radiation in the direction of the axis of the mast.

Abstract: A circularly polarized antenna is provided using a slotted conductive mast. The slots extend about one-half wavelength long along the lengthwise axis of the mast for exciting horizontal components of the wave. Conductive rods extend from a point near each elongated side of the slot with each rod being about one full wavelength long and having a free end portion extending in the vertical plane approximately one-half wavelength to radiate the vertical component of the wave.