Antenna Basics; Antenna Placement - Omega MWTC SERIES User Manual

6.8 Antenna Basics

6.8.1 Antenna Basics
By definition, an antenna is a device used to transform an RI signal, traveling on
a conductor, into an electromagnetic wave in free space. Antennas demonstrate
a property known as reciprocity, this means that an antenna will always
maintain the same characteristics regardless if it is used to transmit or receive.
Most antennas are resonant devices, which means they operate efficiently over
a relatively very narrow frequency band. An antenna must be tuned to the
same frequency band of the radio system to which it is connected, otherwise the
reception and the transmission will be impaired. The antennas in your wireless
thermocouple connector system have been tuned to operate in the 915 or 868
band.

6.9 Antenna Placement

Proper antenna installation is important and will allow you to achieve maximum
performance and range between your connector/transmitter and receiver unit.
Your connector/transmitter should not be installed on the same side of the wall as the
receiver. If mounted close to each other on the same wall, the radio waves are likely
to be subject to interfering dispersions or reflections. The best positioning is to have the
connector/transmitter installed on the opposite or connecting wall to the receiver.
6.9.1 Horizontal Antenna Placement
If your Connector/Transmitter is mounded in a horizontal position in your
application you should mount your receiving so that the same polarization is
achieved with the receiving antenna. As shown in the "Horizontal" example above.
NOTE:
Figure 6-7. Horizontal Antenna Placement
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System Operation
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