ETS-Lindgren 3150B Dual Stacked LPDA Antenna - Manual (Page 7)

Introduction | 7
1.0 Introduction
The ETS-Lindgren
Model 3150B Dual-Stacked
Log Periodic Dipole Array
(LPDA) Antenna is comprised
of two separate 100 ohm
LPDAs. The result is a 50 ohm
input impedance array when
assembled in parallel,
providing increased gain when
compared to a single LPDA.
Also, the VSWR is low so that
it provides excellent match
with the amplifier, resulting in
the generation of a high field
per input power.
The Model 3150B is ideal in situations where high fields need to be generated.
Although the Model 3150B can be used as a receive antenna, the primary
application is for generating the high fields that are required in automotive EMC
applications per standards like ISO 11541-2, or for MIL-STD susceptibility
testing.
The frequency range covers 80 MHz to 1 GHz. The Model 3150B can generate
200 V/m with less than 1 kW of input power at a 1-m distance for the 100 MHz to
1 GHz range. When combined with ETS-Lindgren Model 3159 or Model 3158
High-Power Biconical Antennas, the 3150B becomes an integral part of the
ETS-Lindgren high severity level immunity solution.
The Model 3150B is fitted with a 7/16 coaxial connector. With this connector the
antenna can handle up to 5 kW of input power at 80 MHz and up to 3 kW at
1 GHz.
For easy horizontal and vertical polarization changes, the ETS-Lindgren 7-TR
Tripod is recommended; a special cross boom is required to use the
Model 3150B with the 7-TR. For information on the 7-TR and special
cross boom, see page 9. For mounting instructions, see Mounting onto a
7-TR Tripod on page 25.