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| ACB-40 ACB-20 |
ACB-4 Phased Array Systems
For 2 or 4 element vertical arrays
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| ACB-40 ACB-20 |
COMTEK uses state of the art design and technology to offer every ham the most advanced antenna systems possible.
The Phased Array Systems are affordable, simple to install and easy to use. COMTEK makes mono-band phased array switches from 160-10 meters.
A phased array consists of two of more elements fed with a particular phase and power ratio to obtain a directional pattern. Each element of the antenna can be fed with different amounts of power and phase relationships to obtain this directional pattern, providing good gain and front-to-back and front-to-side ratios. COMTEK phased array switchboxes can be used with 2 or 4-element horizontal or vertical arrays. The 4-square vertical array provides the greatest directivity.
Even more gain and better front-to-back and front-to-side ratios are possible
using a 4-element array. Four separate verticals are arranged in a square--a
4-square array--one vertical at each corner of a square. The square is one
quarter wavelength on a side. Its pattern is directional across each diagonal of
that square. In other words, it beams across opposite corners of the square.
COMTEK's ACB-4 provides the correct power and phase division between these 4
vertical elements and a switch matrix which allows rotation of the relative
powers and phases allowing 4 separate directions at the flick of a switch from
your operating position. The exterior switchbox of the ACB-4 contains all the
switching and phase and power controls using hybrid toroids. No coax cables are
hanging at the switchbox. You switch 90 degrees at each of the 4 switch
settings--providing a full 360 degrees of coverage.
ACB-4 HYBRID PHASING COUPLER
POWER SUPPLY / SWITCH CONTROL