H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 3/12 (2006.01) H01Q 9/28 (2006.01) H01Q 21/10 (2006.01)
Patent
CA 2097122
ABSTRACT An omni-directional, collinear, vertical base station antenna having an adjustable or variable radiation beam tilt capability. Termination at the drive or feed point is provided by an adjustable, capacitive coupling at the feed point between the conductive elements of a feed structure and a radiator assembly for adjusting the physical position of the feed point and thereby the phase of the feed points relative to the upper and lower portions of the antenna, to alter the deflection angle of the radiation produced. Signal feed means, having first and second conductive feed elements, is connectable to a signal feed line to couple a signal between the feed line and the radiator assembly. Adjustable support and control mechanism supports said elongated radiator assembly and said feed means for relative movement therebetween to effect selective adjustment of the feed point of said capacitive coupling means along the length of said elongated dipole radiator assembly to thereby effect adjustment of the beam angle of the radiation pattern.
Hadzoglou James
Stevens Harold E.
Warner Michael E.
Allen Telecom Group Inc.
Fetherstonhaugh & Co.
Orion Industries Inc.
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