Mobile communications antenna

Details Mobile communications antenna Mobile communications antenna

H - Electricity

01

Q

351/8

H01Q 11/16 (2006.01) H01Q 1/12 (2006.01) H01Q 21/10 (2006.01)

Patent

CA 1322786

ABSTRACT OF THE DISCLOSURE A mobile communications antenna assembly for use over a selected band of frequencies in the VHF and UHF ranges, has, a radiating element with first, second and third, collinear radiating sections. The first and second sections each have an electrical length substantially equal to five-eighths wavelength over the selected band, while the third section has an electrical length substantially equal to one-quarter wavelength. Phase inductor elements connect the sections for maintaining a predetermined phase relationship between electrical signals radiating from the sections. The third section further has a radiating surface area that is substantially greater than the radiating surface areas of the first and second sections. The base end of the third section is mounted to be elevated above the surface. The transmission line is connected to impedance matching means at a point where impedance of the two is substantially equal.

601606

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