Phased array antenna systems with controllable electrical tilt

Details Phased array antenna systems with controllable electrical tilt Phased array antenna systems with controllable electrical tilt

2004-10-26

2008-09-02

Tarcza, Thomkas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

C342S372000, C455S063400, C455S562100

Reexamination Certificate

active

07420507

ABSTRACT:
A phased array antenna system with controllable electrical tilt generates two signals V2aand V2bwith variable relative delay therebetween. The signals are converted into antenna element drive signals by a power distribution network. The network splits each of the two signals V2aand V2binto three signal components. Pairs of components of different signals are input respective hybrid coupling devices (hybrids), which provide vector sums and differences of their inputs and act as phase-to-power converters. Their outputs are distributed between further hybrids, which act as power-to-phase converters and provide antenna element drive signals with phase varying both with element array position and also with the variable relative delay between the two signals V2aand V2b.Antenna electrical tilt is therefore controllable by altering a single relative delay.

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