log.-per. antenne log. periodic antenna r&s hl033 - Isotest

Printed in Germany
4062.6650.34-01 - 1
Extracts of Manual
LOG.-PER. ANTENNE
LOG. PERIODIC ANTENNA
R&S £ HL033
4062.6608.02
Geschäftsbereich / Division
Überwachungs- und Ortungstechnik /
Radiomonitoring and Radiolocation

HL033 Handbuch
2 Characteristics
2.1 Uses
The linearly polarized Log-Periodic Antenna HL033 (see Fig. 5 and Fig. 6) provides general broadband
transmission and reception in the frequency range from 80 MHz to 2000 MHz.
Especially in connection with a test receiver or a monitoring receiver, the antenna is suitable for a variety
of reception tasks; i.e. the direction of incidence and the polarization plane of electromagnetic waves as
well as the field strength can be determined. The advantage of log-periodic antennas is that they are
mainly frequency-independent of base impedance and radiation pattern. Very wide frequency ranges
(>20:1) can therefore be covered by means of just one antenna. In combination with a test receiver, the
antenna is ideal for field-strength measurements. The antenna-specific k factor required can be
obtained from the CD-ROM (which is supplied with the antenna) since every antenna is calibrated. For
a typical curve, see the annex (see Fig. 9).
Note:
Free-space antenna factors are to be used both for field-strength measurements to CISPR and VDE at
a measurement distance of 10 m and 30 m and for usable field-strength measurements (e.g. to CCIR).
In case of field-strength measurements, the reference point for setting the distance of the DUT is the
center between the longest and the shortest radiator.
The HL033 can also be used as a transmitting antenna. The max. transmit power is frequencydependent.
For more detailed information, see Specifications (section 2.3).
2.2 Operation and Design
The log-periodic dipole principle was selected to obtain an extreme broadband characteristic of 1:25.
The feed-line of the dipoles is at the same time the antenna supporting structure. This setup has the
following advantages:
• Low frequency-dependence of radiation patterns and input impedance.
• Owing to the optional central holding device of the antenna, the antenna can also be set up at
exposed locations.
• All metallic parts are electrically connected to the mast flange and thus offer high protection against
electrostatic charges and lightning strokes.
• Good resistance to atmospheric conditions is ensured by using materials such as plastic,
aluminium and stainless steel.
• The balance and the good front-to-back ratio of the antenna patterns allow the direction of an
incident signal to be roughly determined.
• Use as a transmitting antenna.
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HL033 Handbuch
2.3 Specifications
Frequency range............................................80 MHz to 2000 MHz
Polarization ....................................................linear
Input impedance ............................................50 Ω (unbalanced)
Standing wave ratio (VSWR)1 .......................≤2 (typ., see Fig. 7)
Gain (reference: isotropic radiator)1 ..............approx. 6.5 dBi (typ., see Fig. 8)
Antenna factor1 .............................................see Fig. 9
Permissible input power.................................80 MHz 460 W + 100% AM
100 MHz 430 W + 100% AM
500 MHz 210 W + 100% AM
1000 MHz 160 W + 100% AM
1500 MHz 140 W + 100% AM
2000 MHz 120 W + 100% AM
Radiation pattern............................................see figures in section 7.4.6
Polarization decoupling ..................................20 dB (typ).; see Fig. 11
Phase center..................................................see Fig. 12
Front-to-back ratio..........................................>25 dB (typ.; see Fig. 10)
RF connector .................................................N connector
Dimensions
Antenna length..........................................1.8 m
Max. antenna width...................................1.96 m
Flange2.....................................................see Fig. 3
Weight............................................................6 kg
Permissible wind speed .................................150 km/h without icing
107 km/h with 1 cm radial icing
79 km/h with 3 cm radial icing
Wind load.......................................................360 N
Center of wind load ........................................0.75 m (measured from fixing flange)
MTBF .............................................................>1 000 000 h (according to EN 61709)
Rated temperature range3.............................-40°C to +50°C
Storage temperature range3..........................-40°C to +70°C
Humidity3 .......................................................+55°C/95%
Shock .............................................................acc. to MIL- STD 810 E Method Nr. 516.4, Procedure I,
and DIN IEC 60068-2-27 (restricted)
Lightning protection........................................according to VG 96901 part IV
NEMP protection............................................according to VG 96901 part IV
Colour ............................................................RAL HR 840 (blue grey)
1 Calibration values contained on CD-ROM.
2 A dimensioned drawing of the flange is available in DXF format on the CD-ROM supplied.
3 Test instructions: MIL-T-28800D-3
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HL033 Handbuch
7 Annex
7.1 Drawings
NWA
Fig. 3: Flange dimensions (in mm)
Plastic mast
>1m
Test point
Polarisation: vertical
>6m
free of reflections
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>6 m
Fig. 4: Test setup for VSWR measurement

HL033 Handbuch
7.3 Photographs
Fig. 5:HL033 in set-up state
Fig. 6: HL033 in carrying bag
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HL033 Handbuch
7.4 Patterns
The following patterns provide typical values. For individual calibration data, see test report or supplied
CD-ROM.
7.4.1 SWR
7.4.2 Gain
Gain / dB
3.00
2.80
2.60
2.40
2.20
SWR
2.00
1.80
1.60
1.40
1.20
1.00
80 240 400 560 720 880 1040 1200 1360
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
80
240
400
560
720
Fig. 7: SWR (typ.)
880
Frequency / MHz
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1040
Frequency / MHz
1200
Fig. 8: Gain (typ.)
1360
1520
1520
1680
1800 MHz
1680 1840 2000
1840
2000

HL033 Handbuch
7.4.3 Antenna Factor
Antenna Factor / dB
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
80.0
240.0
400.0
7.4.4 Front-to-Back Ratio
Front to Back Ratio / dB
50
45
40
35
30
25
20
15
10
5
0
80
240
400
560
560.0
720.0
880.0
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1040.0
Frequency / MHz
1200.0
Fig. 9: Antenna factor (typ.)
720
880
1040
Frequency / MHz
Fig. 10: Front-to-back ratio (typ.)
1200
1360.0
1360
1520.0
1520
1680.0
1680
1840.0
1840
2000.0
2000

HL033 Handbuch
7.4.5 Polarization Decoupling
Pol. Decoupling / dB
30.0
25.0
20.0
15.0
10.0
5.0
0.0
80
240
400
560
720
880
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1040
Frequency / MHz
Fig. 11: Polarization decoupling (typ.)
1200
1360
1520
1680
1840
2000

HL033 Handbuch
7.4.6 Typical Radiation Patterns
All patterns show the relative electrical field strength.
E patterns
The E pattern corresponds to the radiation pattern in
the dipole plane
80 MHz
80
90
100
70
110
200 MHz
80
90
100
70
110
60
120
60
120
50
130
50
130
40
140
40
140
30
150
30
150
20
160
20
160
0
10 1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
170
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
180
0
10 1.0
170
180
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
H patterns
The H pattern corresponds to the radiation pattern at
right-angles to the dipole plane.
0
1.0
340
330
320
0.8
350
210
200
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80 MHz
270
290
280
260
250
300
240
200 MHz
270
290
280
260
250
300
240
310
230
310
230
220
320
220
330
210
190
0.6
0.4
0.2
0.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
180
0
350 1.0
340
0.9
200
190
180
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170

HL033 Handbuch
4062.6608.02 17 D-1
E patterns
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
500 MHz
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
1000 MHz
H patterns
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
500 MHz
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
1000 MHz

HL033 Handbuch
4062.6608.02 18 D-1
E patterns
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
1500 MHz
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
2000 MHz
H patterns
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
1500 MHz
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
2000 MHz

HL033 Manual
7.4.7 Phase Center
Frequency / MHz
80
160
240
320
400
480
560
640
720
800
880
960
1040
1120
1200
1280
1360
1440
1520
1600
1680
1760
1840
1920
2000
0.0
0.2
0.4
0.6
Phase Centre / m
0.8
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1.0
Fig. 12: Phase center
1.2
1.4
1.6
1.8