SPECIFICATION
G21 GSM Hercules Gen.II Penta Band Cellular Antenna
Part No.
Product Name
:
:
G21.B.301111
G21 GSM Hercules Gen.II Penta Band Cellular Antenna
Screw-mount (Permanent mount)
GSM/GPRS/CDMA/EVDO/UMTS/HSPA/WCDMA
850/900/1800/1900/2100 MHz
Low profile - Height 29mm and diameter 49mm
Heavy duty screw mount
UV and Vandal resistant PC housing
IP67 & IP69K – No ingress of dust and no water
ingress permitted from powerful pressure jets in all
directions and no performance degradation.
Protected against close-range high pressure, high
temperature spray downs.
Standard is 3M Cable RG174 SMA(M)-Customizable
Designed for a metal Ground Plane
ROHS Compliant
Features
:
SPE-12-8-047/E/EZ
Page 1 of 22
1. INTRODUCTION
The G21 (Generation II) Hercules is a high performance steel thread-mount Penta-band
cellular antenna for external use on vehicles and outdoor assets worldwide. Omni-
directional high gain across all bands ensures constant reception and transmission.
Durable UV resistant PC housing is resistant to vandalism and direct attack. At only 29
mm height it complies with the latest EU height restrictions directives for roof-mounted
objects, with a diameter of 49 mm. Designed to not catch on tree-branches. This
antenna can be mounted on metal structures.
2. SPECIFICATION
ELECTRICAL CELLULAR
Standard
Band (MHz)
Frequency (MHz)
Return Loss (dB)
0.3
Cable
length
(meter)
1.0
2.0
3.0
5.0
Efficiency (%)
0.3
Cable
length
(meter)
1.0
2.0
3.0
5.0
Gain (dBi)
0.3
Cable
length
(meter)
1.0
2.0
3.0
5.0
Polarization
Impedance
Max Input Power
VSWR
1.8
1.0
0.9
0.8
-1.0
0.8
2.2
1.8
0.9
-0.5
1.3
0.6
0.2
-1.0
-4.5
Linear
50 ohms
10 watts
<3.5:1
*Note: The return loss, efficiency and gain in the above table, were measured on 30x30 cm
metal plate with RG174 cable. For a specific case performance refers to the below plots.
AMPS
850
824-896
-6.0
-7.8
-8.1
-11.0
-11.8
51.1
29.4
24.3
24.6
17.1
GSM
900
880-960
-5.2
-8.7
-9.3
-12.4
-13.6
41.4
40.2
27.5
27.6
16.4
DCS
1800
1710-1880
-6.1
-11.4
-16.5
-17.5
-17.6
38.0
42.2
28.4
22.0
15.7
PCS
1900
1850-1990
-6.2
-15.3
-20.3
-18.3
-17.8
46.5
43.4
20.2
17.8
15.0
3.9
1.6
-0.7
-1.1
-4.2
3G
2100
1920 –2170
-5.8
-13.7
-19.5
-18.1
-17.8
32.3
29.9
19.6
15.0
12.0
1.5
-0.3
-1.1
-2.2
-4.3
SPE-12-8-047/E/EZ
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MECHANICAL
Dimensions
Cable
Connector
Casing
Base and Thread
Thread Diameter
Weather proof gasket
Sealant
Protection
Corrosion
Temperature Range
Thermal Shock
Humidity
Shock (Drop Test)
Cable Pull
Recommended Mounting Torque
Maximum Mounting Torque
Height = 29 mm and Diameter = 49mm
3M RG174 – Fully Customizable
SMA-Male – Fully Customizable
UV Resistant PC
Nickel plated steel
18 mm
CR4305 foam with 3M9448B double-side adhesive
Rubber Stopper
ENVIRONMENTAL
IP67 & IP69K
5% NaCl for 96hrs - Nickel plated steel base and thread
-40°C to +85°C
100 cycles -40°C to +85°C
Non-condensing 65°C 95% RH
1m drop on concrete 6 axes
8 Kgf
24.5N∙m
29.5N∙m
*Note: Specifications may be subject to
change
SPE-12-8-047/E/EZ
Page 3 of 22
3. TEST SET UP
Z
X
Y
Figure 1.
G21 Antenna test set up in free space, 30x30 cm metal plate and 60x60 cm
metal plate, R&SZVL6 VNA (left) and R&S4100 CTIA 3D Chamber (Right).
SPE-12-8-047/E/EZ
Page 4 of 22
4. ANTENNA PARAMETERS
4.1 Return Loss
Figure 2.
Return Loss of G21 Hercules antenna in free space
Figure 3.
Return loss of G21 Hercules antenna on 30 cm metal plate.
SPE-12-8-047/E/EZ
Page 5 of 22
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