Owner's manual
System Operation
4
4.7 Antenna Basics
By definition, an antenna is a device used to transform an RF 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
transmitter system have been tuned to operate in the 2.4 GHz band. In some
cases, a short RF cable may be used to connect an antenna to your device. Please
note that RF extension cables will always add some loss to the transmitting
signal strength. The longer the cable the more signal will be lost over that cable.
Because of this the length of the cable should be kept as short as possible.
4.8 Antenna Placement
Proper antenna installation is important and will allow you to achieve maximum
performance and range between your transmitter and receiver unit. Your
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 transmitter installed on the opposite or connecting wall to the receiver.
4.8.1 Horizontal Antenna Placement
Figure 4-4. Horizontal Antenna Placement
If your transmitter is mounted 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.
TX
RX
SB
PWR
PWR
2.4 GHz
®
ANTENNA
USB
UWTC SERIES
WIRELESS TRANSCEIVER
OMEGA ENGINEERING, INC.
Stamford, CT 06907
Made in USA
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
1) This device may not cause harmful interference;
2) This device must accept any interference received,
including interference that may cause undesired operation.
!
FCC ID: OUR–XBEEPRO
IC #4214A–XBEEPRO
®
4-6