초록 ▼

An antenna comprising a metal panel on which are mounted two parallel collinear dipole arrays spaced on the order of a half-wavelength from each other. Each dipole array is of the order of 9 wavelengths long and is fed at its center. Half way between the two collinear arrays is mounted a zigzag ante

An antenna comprising a metal panel on which are mounted two parallel collinear dipole arrays spaced on the order of a half-wavelength from each other. Each dipole array is of the order of 9 wavelengths long and is fed at its center. Half way between the two collinear arrays is mounted a zigzag antenna with its center located half way between the centers of the collinear arrays which may be staggered with respect to each other. The two collinear arrays are fed in the same relative phase with each other. The zigzag antenna and the dipole array may be fed from different sources operating at different frequencies or they may be fed from the same source and phased to radiate circularly polarized waves. A plurality of the panel antennas may be mounted around a metal cylinder to serve as an omnidirectional antenna. A square tower may serve as the metal cylinder. Several levels of one to four antennas may be mounted on a square tower depending on the shape of the area to be served.

대표청구항 ▼

A panel antenna for cross polarized waves comprising: (a) a metal panel on which are mounted two parallel collinear dipole arrays spaced at a distance between 0.3 wavelength and 0.6 of the wavelength from each other, and (b) a zigzag antenna located half way between the two collinear arrays with its

A panel antenna for cross polarized waves comprising: (a) a metal panel on which are mounted two parallel collinear dipole arrays spaced at a distance between 0.3 wavelength and 0.6 of the wavelength from each other, and (b) a zigzag antenna located half way between the two collinear arrays with its longitudinal axis parallel to the arrays and located substantially half way between the centers of the two collinear arrays.