ProSoft Technology RLX-IFH9E-A - Manual (Page 83)

RLX-IFHE ♦ RadioLinx Industrial Wireless Reference
RadioLinx® Industrial Frequency Hopping Ethernet Radios User Manual
ProSoft Technology, Inc. Page 83 of 109
November 19, 2013
4.1.6 Collinear array antennas
A collinear array antenna is typically composed of several linear antennas
stacked on top of each other. The more stacked elements it has, the longer it is,
and the more gain it has. It is fed in on one end.
The antenna pattern is torroidal. Its azimuthal beamwidth is 360°
(omnidirectional). Its vertical beamwidth depends on the number of
elements/length, where more elements equal narrower beamwidth. The antenna
gain also depends on the number of elements/length, where more elements
produce higher gain. Typical gain is 5 to 10 dBi.
The antenna polarity is linear, or parallel to the length of the antenna.