Product manual

Configuration directions, Non-standard antennas for BS340/BS370
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
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used are: large production halls, long corridors (directional antennas), coverage of bad radio spots
and for expanded base station coverage.
When compared to the standard base station antennas, non-standard antennas are more expensive,
less easy to install and usually larger. These disadvantages do normally not justify the use of non-
standard antennas in an office environment.
8.3 Outdoor applications
Coverage instead of capacity is usually required in outdoor applications where LOS propagation can
be expected. Omni-directional antennas can be used for large areas like parking places. Directional
antennas can be used for example to cover large walking distances between buildings.
In some cases it is handy to place the base station indoors and feed the coax cable through the wall
towards the non-standard antennas.
8.4 Recommended antenna types
The following models have been chosen because they give good test results and are easy to mount.
The tests results given are compared to a base station with the standard 2 dBi gain antennas. The
tests were done in an open outdoor environment, always with LOS propagation.
The omni-directional MA430X14 antenna refers to one antenna (you must order 2 antennas for each
base station) whereas the directional SPA antenna includes two antennas.
Table 7 Characteristics of an omnidirectional and a directional antenna
8.5 Cable losses
Above mentioned cables are delivered with 1 m coax cable fixed to the antenna. If additional coax
cable is used an important aspect is the loss in the coax cable between the base station and the
antenna. This loss is supposed to be less than the difference between the gain of the non-standard
antenna and the gain of the standard antenna (3 dB). For example, if antenna 2 is used, a cable with
a loss of 1 dB/m is acceptable if cables no longer then 5 m are used. This type of cable is still flexible
and easy to mount. Longer cables are possible but are very expensive and are not flexible due to the
larger diameter.
Antenna types
Omnidirectional – Mat Equipement
MA430X14 (antenna 1)
Directional – Suhner Planar antenna SPA
(antenna 2)
Gain
6.2 dBi ± 0.3 dBi 8 dBi
Frequency range 1880-1930 MHz 1850-1990 MHz (Although DECT is from
1880–1900 MHz, tests have shown that this
antenna is highly satisfactory)
Radiation in horizontal
plane
omnidirectional within ± 0.4 dB beamwidth at -3 dB: 85 degrees
Radiation in vertical plane beamwidth at -3 dB: 24° ± 2° beamwidth at 3 dB: 75 degrees
Impedance 50 ohms 50 ohms
Maximum power 10 W 75 W
Connector One MCX male connector at end of 1m
of RG316 coaxial cable
Two MCX male connectors at end of 1m of
RG316 coaxial cable
Weight 0.3 kg 0.11 kg
Size 395 x 16 mm 101 x 95 x 32 mm
Test results 450 m max. range 600 m max. range