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P440 Data Sheet / User Guide
7 Broadspec Antenna
The P440 is designed to operate with the Broadspec antennas shown in
Figure 36
. While this is the
antenna provided with the P440, the unit can accommodate a wide variety of standard and custom
antennas. The only electrical requirement is that the antenna used has a 50 ohm SMA connection.
Using a different antenna will likely change the beam pattern and gain, either of which will affect
certification. Using a different antenna may change the phase linearity and compromise the pulse
shape and integrity. This can affect the performance of the range measurement algorithms.
However, all of the transmit settings have been set assuming that the P440 is connected to the
Broadspec. In fact, the pending US certification effort will require use with the Broadspec antenna.
Using any other antenna (or even adding cabling between the P440 and the antenna) will require
recertification of the equipment.
For example, as per FCC 15.203,
the Broadspec antenna must be professionally installed and the
installer has the responsibility to insure that the Broadspec antenna is used.
EU regulations have similar restrictions.
The P440 can be operated with a single antenna (used for transmit and receive) or with two antennas
(where one is dedicated for transmit and the second for receive).
The Broadspec antenna (~3 dBi) provides an omni-directional transmit/receive pattern supporting a
frequency range of 3.1-5.3 GHz. It has a standard SMA male connector and measures 1.2” x 2.5” x
0.063” (3.0 x 63.5 x 1.6 mm). When ordered with a Kit it is also provided with a 90-degree connector
as shown in
Figure 36
.
The connector can also be ordered with a standard SMA female connector. See
Section 10
for
ordering details.
Specifications are available on the web at:
http://www.timedomain.com/datasheets/TD_Broadspec_Antenna.pdf
Fig. 36: Broadspec antenna with phase center indicated
Phase Center