Antenna drive arrangement for very high frequency...

Details Antenna drive arrangement for very high frequency... Antenna drive arrangement for very high frequency...

G - Physics

01

S

343/102, 343/90

G01S 1/50 (2006.01) H01Q 3/34 (2006.01)

Patent

CA 1197307

ANTENNA DRIVE ARRANGEMENT FOR VERY HIGH-FREQUENCY OMNIDIRECTIONAL RANGE NAVIGATION SYSTEM ABSTRACT OF THE DISCLOSURE An antenna drive arrangement for a very high frequency omnidirectional range (VOR) navigation system for aircraft. The antenna has two vertically arrayed antenna elements located above a ground plane, and reference and variable phase signals are distributed to each of the antenna elements in amplitude and phase relationship selected to produce a null in the H-component of the radiated field which is substantially tangential to a projection of the ground plane. The null is located in a region of the field disposed radially outwardly of the antenna array.

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