ProSoft Technology RLX-IFH24S-A - Manual (Page 75)

RLX-IFHS ♦ RadioLinx Industrial Wireless Guide to the RLX-IFHS User Manual
RadioLinx® Industrial Frequency Hopping Serial Radios User Manual
ProSoft Technology, Inc. Page 75 of 107
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.