Active Receiving Antenna STA 5 A/D/0.01-100

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Active Monopole Antenna 0.01 - 100 MHz

Vertically Polarized Omnidirectional Antenna Characteristic


Description

This active antenna solution covers the frequency range from 0.01 - 100 MHz. An amplifier circuit directly connected to the base point of the antenna rod matches the high impedance of the rod to the low input impedance of the receiver or the connected coaxial cable.


Our active receiving antennas are fitted with amplifiers providing a high RF dynamic range in order to avoid degradation of the reception-system characteristics.

A multistage protection circuit at the input of the active element ensures that the antenna electronics will not be damaged even in case of lightning strikes in close proximity.


The effective height (the ratio of the output voltage over the field strength) is constant over a wide frequency range. This also makes this active antenna ideal for performing field strength measurements.


Since the length of the antenna rod should be selected that the intrinsic noise of the amplifier is just covered by the external noise the optimal rod length is different for each frequency band.

A rod length of 100 cm is a fair compromise for the frequency band from 10 kHz to 30 MHz.

Screw-on rods allows easy matching of the rod length to a wide variety of operating conditions.


With regard to the robust construction and the use of weatherproof materials our active antennas can be used under extreme environmental conditions.


The operating voltage for the antenna is 39 Vdc. The AAN power supply series or an AAS Antenna Distribution System is used to feed the operating voltage to the active element via the coaxial cable.

Active Receiving Antenna STA 5 A/D/0.01-100

 

Amplifier for STA 5 A/D/0.01-100

 


 

Dimensions and Weights

STA 5 A/D/0.01-100 Dimensions and Weights

 


 

Technical Data

Frequency range 0,01 – 100 MHz
Output impedance 50 Ω VSWR ≤ 1,3
Effective height at 50 Ω (1) 4,5 cm (tolerance ± 1 dB)
Colour light grey, similar RAL 7035
Bending moment at mounting flange 1 daNm (wind speed 150 km/h)
Shock
50 g/10 ms
Vibration 4 – 12,5 Hz amplitude = 1,6 mm
12,5 - 90 Hz acceleration 10 m/s²
Ambient temperature -40°...+70°C
Storage temperature -55°...+80°C
Relative humidity 100 %
EMP STANAG 4145
Lightning protection 500 kV/m/μs
RF connector N socket
Power supply 39 Vdc through coaxial cable
MTBF 80.000 h (Tu = 40°C)
MTTR 0,5 h (replacing of subunits)

Intermodulation 2nd order (1)
(E1=E2=100 mV/m)

≥ 82 dB
Intermodulation 3rd order (1)
(E1=E2=100 mV/m)
≥ 130 dB

Equivalent noise field strength (1)
(limit of sensitivity B=1 Hz)

Sensitivity (1)
(B=3 kHz, S/N=10 dB)

Equivalent noise field strength and sensitivity

Cross modulation
(causing 10 % modulation) (1)

Max. tolerable field strength
(1dB reduction of gain) (1)

Cross modulation and field strength

Notes
(1) The technical data refer to a 50 cm long antenna vertically mounted on conductive ground plane
Data given without tolerance are typical values.
Design and specification are subject to change without prior notice, errors excepted.
Product specification 1_1_4,
© AAS GmbH

 


 

Variants

Model Type Designation Rod Length Colour Comment
Standard STA 5 A/D/0.01-100 50 cm similar RAL 7035
Variant 1 STA 5 A/D/L/0.01-100/RAL.... 50 cm colour according
customer specification
Variant 2 STA 10 A/D/0.01-100 100 cm
similar RAL 7035
Variant 3 STA 10 A/D/L/0.01-100/RAL.... 100 cm colour according
customer specification
Variant 4 STA 10 A/D/F/0.01-100 100 cm flexible

for mobile applications
Variant 5 STA 2.5 A/D/0.01-100 25 cm
similar RAL 7035
Variant 6 STA 2.5 A/D/L/0.01-100/RAL.... 25 cm colour according
customer specification

 


 

 

Accessories

Type Designation Application
AAN 10/B Power Supply Unit 115/230 Vac and 24 Vdc
AAN 10/C Power Supply Unit 115/230 Vac and 11 – 35 Vdc ground free
EAH 1 Adapter for mounting of the antenna on a pipe with external diameter 2“ (60,3mm)
TR 20/E 2" supporting pipe 2 m high steel hot galvanized (EAH 1 required)
TR 30/E 2" supporting pipe 3 m high steel hot galvanized (EAH 1 required)
TA 3
Test adapter for active element

 

 


 

 

 

Spare Parts

The following spare part list is applicable for the active antenna types


No.

Designation
Type

Part Number
NSN
Max. QTY
(a)
MTBF
[hrs.]
MTTR
[hrs.]
Dimensions
[mm]
Weight
[kg]
Qty (c)
Qty (d)
Remark
1 Insulator
ISO A1

00-05-42-01-00
5970-12-320-6145

1 130.000
---
160 x 150
1,00
---
---

2 Flat gasket 7
D/052
5330-12-320-9989
1 ---
---
160 x 3
0,20
1
1

3 Antenna rod
STA 2.5
00-05-42-06-00
5985-12-320-5342
1 130.000
---
32 x 220
0,15
1
1
STA 2.5 A/D/..
only
3a Antenna rod
STA 5
00-05-42-04-00
5985-12-320-5341
1 130.000
---
32 x 470
0,20
1
1
STA 5 A/D/..
only
3b Antenna rod
STA 10
00-05-42-02-00
5985-12-314-0516
1 130.000
---
32 x 970
0,30
1
1
STA 10 A/D/..
only
3c Antenna rod
STA 10 F
00-05-42-07-00
1 130.000
---
33 x 970
0,30
1
1
STA 10 A/D/F
only
4 Active element
AE MD
00-05-58-04-00
1 80.000
1,0
80 x 130
0,75
1
1

5 O-Ring
69x3 mm
A/254
5330-12-331-7313
1 ---
---
69 x 3
---
1
1

6 Test adapter
TA 3
00-14-03-00-00

---
---
170 x 70
0,80

for test purposes only
7 Manual
STA .. A/D/0.01-100


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Notes

(a) Maximum quantity per equipment
(b) Dimensions and weight are without packing
(c) Recommended quantity per equipment for 90 days on board

(d) Recommended quantity per equipment for 3 years depot

 

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For further information please contact

Active Antenna Systems AAS GmbH
Albert-Einstein-Ring 21, 22761 Hamburg, Germany
Phone +49 40 899 695 - 0 Email info@aas.de

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