Antenna drive arrangement for very high frequency omidirectional range navigation system

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 amplitu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LUCAS, JAMES G, YOUNG, ALAN C
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	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.