Antennas
Log Periodic
Dipole Array Antenna
Model 3150
Features
●
100 MHz to 1 GHz frequency range
●
Moderate gain for maximum
illumination area
●
Low VSWR of less than 2:1 minimizes
mismatch losses between amplifier
and antenna
●
2 kW continuous RF input power (Maximum)
●
Tough powder coat finish
ETS-Lindgren’s Model 3150 is a broadband,
Electrical Field Distribution*
linearly-polarized log periodic dipole array
antenna (LPDA) with a 100 MHz to 1 GHz
frequency range. The antenna has moderate
gain to provide an ideal illumination area.
It exhibits low VSWR of less than 2:1, which
minimizes mismatch losses between the
amplifier and antenna. The Model 3150
handles high power requirements of up to
2 kW for generating high electric field
strength.
The Model 3150 can be used in both
horizontal and vertical polarizations.
The antenna provides a half-power
beamwidth greater than 50° across the
whole operating frequency range. The
final design is thoroughly optimized
numerically and experimentally for
efficient radiation and illumination of a
large uniform area.
The 3150 is constructed of lightweight,
corrosion-resistant aluminum, providing
years of trouble-free service. It receives a
tough powder coat finish, which protects
against scratching and abrasion better
than painted or bare surfaces.
An optional wheeled pedestal is available
which permits horizontal and vertical
antenna polarization, height, and tilt-angle
adjustments. A pneumatic cylinder is used
to change polarization, and can be
remotely controlled using an optional
ETS-Lindgren Model 2090 Controller. The
Model 2090 is IEEE-488 compatible, and
uses fiber optic I/O for communication
with the pedestal.
* Field distribution data are based on free-space condition.
In the graphs that follow, a full numerical
model is used to analyze the Model 3150,
and no assumption was made about the
input impedance and radiation pattern
of the LPDA antenna. The LPDA antenna
design, combined with the setup of the
antenna with respect to the equipment
under test(EUT), is specially optimized
to yield the best uniformity and field
strength in a large uniform area, such as
5(w) x 2.4(h) m2 . The input power to the
antenna is 1.8 kW (maximum RF output
from the amplifier provided).
Field measurement is based on 100 V/m
being the strongest field point in the
uniform area with the given input
power.
For both horizontal and vertical
polarizations, 100 V/m with 0 dB to -3 dB
uniformity can be achieved up to 500 MHz
across the whole 5 x 2.4m2 area. Above 500 MHz:
●
For vertical polarization, from 500 MHz - 1 GHz,
field uniformity (0 dB to -3 dB) can be achieved in
the horizontal direction. In the vertical direction,
field uniformity is achieved 0.6 m above the floor
in a 5 (w) x 1.9(h) m2 area.
●
For horizontal polarization, from 500 MHz - 1 GHz,
field uniformity (0 dB to -3 dB) can be achieved in
the vertical direction. In the horizontal direction,
field uniformity is achieved up to a width of 2.5m
(i.e. , 0.6 m above the floor, 2.5 (w) x 2.4(h) m2).
●
The field distribution in the required area (0.6 m
above the floor, 5 x 2.4 m2) for the setup in Figure 2
(pg. 2) is simulated. Note that the antenna is tilted
with respect to the test area. Typical frequencies
are shown in Figures 3 -14 (pgs. 2 - 8). Field
distribution data at additional frequencies are
available upon request.
Standard Configuration
●
LPDA antenna (100 MHz- 1 GHz) 7/8” EIA Flange
Connector
Options
●
Custom pedestal with angle tilt control (0-21°),
and polarization control (horizontal and vertical)
●
Mounting bracket
●
Model 2090 Controller
Performance may vary with different ground treatments.
USA :
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JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
Electrical Specifications
MODEL
FREQUENCY
RANGE
VSWR
RATIO
(AVG)
VSWR
RATIO
(MAX)
CROSSPOLARIZATION
MAXIMUM
CONTINUOUS
IMPEDANCE
3150
100 MHz - 1 GHz
<1.2:1
2:1
> 20 dB
2 kW
50 Ω
CONNECTORS
7/8” EIA Flange
(others available)
Physical Specifications
WIDTH 1
LENGTH
210.8 cm
83.0 in
170.2 cm
67.0 in
MODEL
3150
Custom Pedestal
1
HEIGHT
WEIGHT
9.5 cm (vertical position)
3.7 in
1.2 m
1.2 m
1.6 - 2.0 m (adjustable)
3.9 ft
3.9 ft
5.2 - 6.5
4.5 kg
10.0 lb
ft (adjustable)
At aperture
ETS-Lindgren’s custom pedestal allows antenna height, tilt-angle
and polarization to be easily adjusted.
uniform area
switch polarization
h= 1.8 m
h= 1.0 m
d= 3.5 m
Figure 1. ETS-Lindgren 3150 vertical polarization setup schematic (can be switched
USA :
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Figure 2. ETS-Lindgren 3150 LPDA antenna modeled geometry.
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
Horizontal Polarization:
2.85
69.41
96.72
94.54
92.35
90.17
87.98
85.80
83.61
81.43
79.24
77.06
74.87
72.69
70.51
68.32
66.14
2.47
2.10
1.72
100
69.41
86.89
1.35
0.97
72.69
0.60
-2.50
-0.94
0.62
2.19
Figure 3. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
horizontally polarized d=3.5 m (setup shown in figure 2), f=100 MHz
filename: r44hd35f100.ps
72.93
2.85
97.10
95.17
93.23
91.30
89.36
87.43
85.50
83.56
81.63
79.69
77.76
75.83
73.89
71.96
70.02
2.47
2.10
1.72
100
96.13
89.36
78.73
1.35
0.97
76.79
0.60
-2.50
-0.94
0.62
2.19
Figure 4. E-field (V/m) in the uniform field area for ETS-Lindgren 3150 horizontally polarized d=3.5 m (setup shown in figure 2), f=300 MHz
filename: r44hd35f300.ps
USA :
FINLAND:
UK:
FRANCE:
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
71.54
2.85
96.58
94.31
92.03
89.75
87.48
85.20
82.93
80.65
78.37
76.10
73.82
71.54
69.26
66.99
64.71
2.47
2.10
96.58
1.72
90.89
100
99.6
78.37
1.35
0.97
79.51
0.60
-2.50
-0.94
0.62
2.19
Figure 5. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
horizontally polarized d=3.5 m (setup shown in figure 2), f=500 MHz
filename: r44hd35f500.ps
2.85
94.70
91.17
87.64
84.11
80.58
77.05
73.51
69.98
66.45
62.92
59.39
55.86
52.33
48.80
45.26
100
2.47
2.10
1.72
84.11
54.09
1.35
96.47
0.97
94.70
0.60
-2.50
-0.94
0.62
2.19
Figure 6. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
horizontally polarized d=3.5 m (setup shown in figure 2), f=700 MHz
filename: r44hd35f700.ps
USA :
FINLAND:
UK:
FRANCE:
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
100
2.85
93.98
89.97
85.95
81.94
77.93
73.91
69.90
65.89
61.87
57.86
53.85
49.84
45.82
41.81
37.80
2.47
2.10
1.72
93.98
85.95
71.91
47.83
1.35
93.98
0.97
0.60
91.97
-2.50
-0.94
0.62
2.19
Figure 7. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
horizontally polarized d=3.5 m (setup shown in figure 2), f=900 MHz
filename: r44hd35f900.ps
2.85
93.87
89.79
85.71
81.62
77.54
73.45
69.37
65.28
61.20
57.12
53.03
48.95
44.86
40.78
36.70
100
2.47
2.10
1.72
77.54
95.92
53.03
36.70
1.35
93.87
0.97
0.60
91.83
-2.50
-0.94
0.62
2.19
Figure 8. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
horizontally polarized d=3.5 m (setup shown in figure 2), f=1000 MHz
filename: r44f1000h.ps
USA :
FINLAND:
UK:
FRANCE:
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
Vertical Polarization:
2.85
83.15
70.97
97.19
95.32
93.45
91.57
89.70
87.83
85.95
84.08
82.21
80.34
78.46
76.59
74.72
72.84
70.97
90.64
2.47
94.38
2.10
98.13
1.72
82.21
96.25
100
1.35
91.57 87.83 83.15
0.97
0.60
-2.50
-0.94
0.62
2.19
Figure 9. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
vertically polarized d=3.5 m (setup shown in figure 2), f=100 MHz
filename: v44d35f100.ps
2.85
90.19
72.36
97.33
95.54
93.76
91.98
90.19
88.41
86.63
84.84
83.06
81.28
79.49
77.71
75.93
74.14
72.36
2.47
97.33
2.10
1.72
100
77.71
98.22 94.65
88.41
78.60
1.35
0.97
96.43
0.60
-2.50
-0.94
0.62
2.19
Figure 10. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
vertically polarized d=3.5 m (setup shown in figure 2), f=300 MHz
filename: v44d35f300.ps
USA :
FINLAND:
UK:
FRANCE:
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
2.85
90.88
68.57
2.47
96.96
94.93
92.90
90.88
88.85
86.82
84.79
82.77
80.74
78.71
76.68
74.66
72.63
70.60
68.57
100
2.10
96.96
1.72
1.35
89.86
84.79
86.82
90.88
0.97
89.86
0.60
-2.50
-0.94
0.62
2.19
Figure 11. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
vertically polarized d=3.5 m (setup shown in figure 2), f=500 MHz
filename: v44d35f500.ps
p
73.56
2.85
96.03
93.39
90.75
88.10
85.46
82.81
80.17
77.53
74.88
72.24
69.59
66.95
64.31
61.66
59.02
81.49
2.47
89.42
2.10
97.36
1.72
100
1.35
97.36
92.07
94.71
92.07
0.97
0.60
-2.50
-0.94
0.62
2.19
Figure 12. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
vertically polarized d=3.5 m (setup shown in figure 2), f=700 MHz
filename: v44d35f700.ps
USA :
FINLAND:
UK:
FRANCE:
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A
Antennas
Log Periodic
Dipole Array Antenna
Model 3150
60.76
2.85
2.47
78.03
2.10
89.01
1.72
96.86
1.35
95.29
92.15
89.01
85.88
82.74
79.60
76.46
73.32
70.18
67.04
63.90
60.76
57.62
54.49
51.35
100
95.29
96.86
0.97
0.60
-2.50
-0.94
0.62
2.19
Figure 13. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
vertically polarized d=3.5 m (setup shown in figure 2), f=900 MHz
filename: v44d35f900.ps
49.55
47.87
2.85
94.96
91.59
88.23
84.87
81.50
78.14
74.78
71.41
68.05
64.69
61.32
57.96
54.60
51.24
47.87
64.69
2.47
76.46
2.10
88.23
1.72
96.64
1.35
98.9
99.7
100
0.97
0.60
-2.50
-0.94
0.62
2.19
Figure 14. E-field (V/m) in the uniform field area for ETS-Lindgren 3150
vertically polarized d=3.5 m (setup shown in figure 2), f=1000 MHz
filename: v44d35f1000.ps
USA :
FINLAND:
UK:
FRANCE:
CHINA:
JAPAN:
ONLINE:
Tel +1.512.531.6400 Tel +358.2.8383.300 Tel +44.(0)1438.730700 Tel +33.1.48.65.34.03 Tel +8610.8275.5086 Tel +81.3.3813.7100 info@ets-lindgren.com
Fax +1.512.531.6500 Fax +358.2.8651.233 Fax +44.(0)1438.730751 Fax +33.1.48.65.43.69 Fax +8610.8275.5537 Fax +81.3.3813.8068 www.ets-lindgren.com
Information presented is subject to change as product enhancements are made. Contact ETS-Lindgren Sales Department for current specifications.
4/04 - 50 E © 2004 ETS-Lindgren REV A