ANT-8-VDP-2000-SMA [LINX]
Remote Adhesive-Mount 868 MHz/915 MHz Antenna;
| 型号： | ANT-8-VDP-2000-SMA |
| 厂家： | 
Linx Technologies |
| 描述： | Remote Adhesive-Mount 868 MHz/915 MHz Antenna |
| 文件： | 总8页 (文件大小：932K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
VDP Industrial Series
Remote Adhesive-Mount 868 MHz/915 MHz Antenna
The Linx VDP industrial series offers rugged remote-
mount dipole antennas having excellent performance
for low-power, wide-area (LPWA) applications such
as LoRaWAN®, Sigfox® and WiFi HaLow™ as well as
other sub-1 GHz unlicensed spectrum applications.
The LPWA VDP industrial antennas are durable, low
profile, IP67 ratable, and UV protected. They mount
permanently to non-conductive surfaces using the
integrated adhesive patch and connect using 2
meters of RG-174/U low-loss cable terminated in
an SMA plug (male pin), or RP-SMA plug (female
socket) connector for FCC Part 15 compliant
applications.
Features
Applications
• Low-power, wide-area (LPWA) applications
― LoRaWAN®
• Performance at 868 MHz
― VSWR: ≤ 1.8
― Peak Gain: 4.5 dBi
― Efficiency: 43%
― Sigfox®
― WiFi HaLow™ (802.11ah)
• Remote sensing, monitoring and control
• Internet of Things (IoT) devices
• Gateways
• Performance at 915 MHz
― VSWR: ≤ 2.1
― Peak Gain: 3.5 dBi
― Efficiency: 44%
• Low profile
― 115.0 mm x 22.0 mm x 6.3 mm
• Durable UV protected enclosure rated at IP67 for
heavy-duty outdoor use
• Low-loss RG-174/U coaxial cable for improved
performance at higher frequencies
• SMA plug (male pin) or RP-SMA plug (female
socket) connector
Ordering Information
Part Number
Description
Remote adhesive-mount sub-1 GHz antenna with 2 m of RG-174/U low-loss coaxial
cable terminated in an SMA plug (male pin)
ANT-8/9-VDP-2000-SMA
ANT-8/9-VDP-2000-RPS
Remote adhesive-mount sub-1 GHz antenna with 2 m of RG-174/U low-loss coaxial
cable terminated in an RP-SMA plug (female socket)
Available from Linx Technologies and select distributors and representatives.
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
Table 1. Electrical Specifications
ANT-8/9-VDP-2000
Frequency Range
VSWR (max)
Peak Gain (dBi)
Average Gain (dBi)
Efficiency (%)
868 MHz
862 MHz to 876 MHz
915 MHz
902 MHz to 930 MHz
1.8
4.5
-3.7
43
2.1
3.5
-3.7
44
Polarization
Impedance
Wavelength
Linear
50 Ω
1/2-wave
Radiation
Max Power
Electrical Type
Omnidirectional
10 W
Dipole
Table 2. Mechanical Specifications
ANT-8/9-VDP-2000
Connection
Cable
Operating Temp. Range
Weight
868 MHz/915 MHz
SMA plug (male pin) or RP-SMA plug (female socket)
2.0 m (78.74 in) of RG-174/U low-loss coaxial cable
-40 °C to +85 °C
47.0 g (1.66 oz)
Dimensions
115.0 mm x 22.0 mm x 6.2 mm (4.53 in x 0.87 in x 0.24 in)
Product Dimensions
Figure 1 provides dimensions of the ANT-8/9-
VDP-2000. The antenna comes with 2 m (78.74 in)
of RG-174/U low-loss coaxial cable terminated by an
SMA plug (male pin) or RP-SMA plug (female socket)
connector.
115.0 mm
(4.53 in)
126.0 mm
(4.96 in)
Antenna Mounting
6.2 mm
(0.24 in)
The remote adhesive-mount VDP industrial series
antenna mounts permanently to non-conductive
surfaces using the integrated adhesive patch. The
mounting surface should be clean, dry and free of oil
residue for ideal adhesion.
8.7 mm
(0.34 in)
Packaging Information
The VDP industrial series antennas are packaged in
bags of 50. Distribution channels may offer alternative
packaging options.
22.0 mm
(0.87 in)
Ø2.8 mm
(0.11 in)
Figure 1. ANT-8/9-VDP-2000 Antenna Dimensions
2
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
VSWR
Figure 2 provides the voltage standing wave ratio (VSWR) across the antenna bandwidth. VSWR describes
the power reflected from the antenna back to the radio. A lower VSWR value indicates better antenna
performance at a given frequency. Reflected power is also shown on the right-side vertical axis as a gauge of
the percentage of transmitter power reflected back from the antenna.
5
40
4
30
3
20
2
10
1
0
850
870
890
910
930
950
Frequency (MHz)
Figure 2. ANT- 8/9-VDP-2000 VSWR with Frequency Band Highlights
Return Loss
Return loss (Figure 3), represents the loss in power at the antenna due to reflected signals. Like VSWR, a
lower return loss value indicates better antenna performance at a given frequency.
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
850
870
890
910
930
950
Frequency (MHz)
Figure 3. ANT- 8/9-VDP-2000 Return Loss with Frequency Band Highlights
3
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
Peak Gain
The peak gain across the antenna bandwidth is shown in Figure 4. Peak gain represents the maximum
antenna input power concentration across 3-dimensional space, and therefore peak performance at a given
frequency, but does not consider any directionality in the gain pattern.
10
5
0
-5
-10
-15
-20
850
870
890
Frequency (MHz)
Figure 4. ANT- 8/9-VDP-2000 Peak Gain with Frequency Band Highlights
910
930
950
Average Gain
Average gain (Figure 5), is the average of all antenna gain in 3-dimensional space at each frequency,
providing an indication of overall performance without expressing antenna directionality.
10
5
0
-5
-10
-15
-20
850
870
890
Frequency (MHz)
Figure 5. ANT- 8/9-VDP-2000 Antenna Average Gain with Frequency Band Highlights
910
930
950
4
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
Radiation Efficiency
Radiation efficiency (Figure 6), shows the ratio of power delivered to the antenna relative to the power
radiated at the antenna, expressed as a percentage, where a higher percentage indicates better performance
at a given frequency.
100
90
80
70
60
50
40
30
20
10
0
850
870
890
Frequency (MHz)
Figure 6. ANT- 8/9-VDP-2000 Antenna Radiation Efficiency with Frequency Band Highlights
910
930
950
5
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
Radiation Patterns
Radiation patterns provide information about the directionality and 3-dimensional gain performance of the
antenna by plotting gain at specific frequencies in three orthogonal planes. Antenna radiation patterns are
shown in Figure 7 using polar plots covering 360 degrees. The antenna graphic at the top of the page
provides reference to the plane of the column of plots below it. Note: when viewed with typical PDF viewing
software, zooming into radiation patterns is possible to reveal fine detail
XZ-Plane Gain
YZ-Plane Gain
XY-Plane Gain
862 MHz to 876 MHz (868 MHz)
1
1
1
36
2
36
2
36
2
5
0
-5
5
0
-5
5
0
-5
35
3
35
3
35
3
34
4
34
4
34
4
33
5
33
5
33
5
-10
-15
-20
-25
-30
-35
-40
-45
-50
-10
-15
-20
-25
-30
-35
-40
-45
-50
-10
-15
-20
-25
-30
-35
-40
-45
-50
32
6
32
6
32
6
31
30
29
7
31
30
29
7
31
30
29
7
8
8
8
9
9
9
28
27
10
11
12
28
27
10
11
28
27
10
11
12
26
25
12
26
25
26
25
13
13
13
24
14
24
14
24
14
23
15
23
15
23
15
22
16
22
16
22
16
860 MHz
870 MHz
880 MHz
21
17
21
17
21
17
20
18
20
18
20
18
19
19
19
XZ-Plane Gain
YZ-Plane Gain
XY-Plane Gain
902 MHz to 930 MHz (915 MHz)
1
1
1
36
2
36
2
36
2
5
0
-5
5
0
-5
5
0
-5
35
3
35
3
35
3
34
4
34
4
34
4
33
5
33
5
33
5
-10
-15
-20
-25
-30
-35
-40
-45
-50
-10
-15
-20
-25
-30
-35
-40
-45
-50
-10
-15
-20
-25
-30
-35
-40
-45
-50
32
6
32
6
32
6
31
30
29
7
31
30
29
7
31
30
29
7
8
9
8
8
9
9
28
27
10
11
12
28
27
10
11
12
28
27
10
11
12
26
25
26
25
26
25
13
13
13
24
14
24
14
24
14
23
15
23
15
23
15
22
16
22
16
22
16
900 MHz
920 MHz
930 MHz
21
17
21
17
21
17
20
18
20
18
20
18
19
19
19
XZ-Plane Gain
YZ-Plane Gain
XY-Plane Gain
Figure 7. ANT-8/9-VDP-2000 Radiation Patterns
6
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
Antenna Definitions and Useful Formulas
VSWR - Voltage Standing Wave Ratio. VSWR is a unitless ratio that describes the power reflected from the
antenna back to the radio. A lower VSWR value indicates better antenna performance at a given frequency.
VSWR is easily derived from Return Loss.
10 Return Loss + 1
20
VSWR =
10 Return Loss − 1
20
Return Loss - Return loss represents the loss in power at the antenna due to reflected signals, measured in
decibels. A lower return loss value indicates better antenna performance at a given frequency. Return Loss is
easily derived from VSWR.
VSWR − 1
Return Loss = −20 log10
VSWR + 1
Efficiency (η) - The total power radiated from an antenna divided by the input power at the feed point of the
antenna as a percentage.
Total Radiated Efficiency - (TRE) The total efficiency of an antenna solution comprising the radiation
efficiency of the antenna and the transmitted (forward) efficiency from the transmitter.
2
VSWR − 1
TRE = η 1 −
•
VSWR + 1
Gain - The ratio of an antenna’s efficiency in a given direction (G) to the power produced by a theoretical
lossless (100% efficient) isotropic antenna. The gain of an antenna is almost always expressed in decibels.
( )
G
Gdb = 10 log10
GdBd = GdBi − 2.51dB
Peak Gain - The highest antenna gain across all directions for a given frequency range. A directional antenna
will have a very high peak gain compared to average gain.
Average Gain - The average gain across all directions for a given frequency range.
Maximum Power - The maximum signal power which may be applied to an antenna feed point, typically
measured in watts (W).
Reflected Power - A portion of the forward power reflected back toward the amplifier due to a mismatch at
the antenna port.
2
VSWR − 1
VSWR + 1
decibel (dB) - A logarithmic unit of measure of the power of an electrical signal.
decibel isotropic (dBi) - A comparative measure in decibels between an antenna under test and an isotropic
radiator.
decibel relative to a dipole (dBd) - A comparative measure in decibels between an antenna under test and
an ideal half-wave dipole.
Dipole - An ideal dipole comprises a straight electrical conductor measuring 1/2 wavelength from end to end
connected at the center to a feed point for the radio.
Isotropic Radiator - A theoretical antenna which radiates energy equally in all directions as a perfect sphere.
Omnidirectional - Term describing an antenna radiation pattern that is uniform in all directions. An
isotropic antenna is the theoretical perfect omnidirectional antenna. An ideal dipole antenna has a donut-
shaped radiation pattern and other practical antenna implementations will have less perfect but generally
omnidirectional radiation patterns which are typically plotted on three axes.
7
VDP Industrial Series
Datasheet
ANT-8/9-VDP-2000-ccc
Website:
Linx Offices:
Phone:
http://linxtechnologies.com
159 Ort Lane, Merlin, OR, US 97532
+1 (541) 471-6256
E-MAIL:
info@linxtechnologies.com
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or application. No rights under any patent accompany the sale of any such product(s) or information.
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All Rights Reserved
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