WDMP.2458.A [TAOGLAS]
Military grade dielectrics & low loss substrates;
| 型号： | WDMP.2458.A |
| 厂家： | 
Taoglas |
| 描述： | Military grade dielectrics & low loss substrates |
| 文件： | 总19页 (文件大小：1646K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPECIFICATION
PATENT PENDING
Part No.
:
:
WDMP.2458.A
Description
5dBi Embedded Dual-Band WiFi Circular Polarized
50mm Patch Antenna With SMA(F) Connector
High efficiency Dual-band WiFi 2.4GHz / 5~6GHz
RHCP
Features
:
5dBi + at 2.4GHz / 7dBi + at 5~6GHz
Military grade dielectrics & low loss substrates.
50mm x 50mm x 16.57 mm ( with connector )
50 x 50 x 7.07 mm (without connector )
Screw mount with SMA(F) ST connector
RoHS Compliant
Photo:
Front
Back
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1. Introduction
The WDMP.2458.A antenna with SMA(F) connector is a circular polarized dual-band
Wi-Fi antenna which consists of an advanced composite dielectric structure,
providing better performance at greater distance and a broader band frequency
range in the smallest package in the market.
Using military grade substrates, the WDMP.2458.A is aimed at unmanned systems,
such as unmanned aerial/ground vehicles (UAVs/UGVs), robotics, and ground
controllers/stations, applicable in different sectors from civilian, law enforcement, to
defence.
Taking advantage of substrates of low dielectric constant and low dissipation factor,
the WDMP.2458.A uses glass microfiber reinforced PTFE substrates to minimize
signal transmission loss in order to achieve high efficiency. It performs with high
efficiencies at WiFi bands from 2400~2500MHz and 5150~5850MHz of 74% and
67%, and with peak gains of 5.5 dBi and 7.3 dBi respectively.
Using circular polarized signals means the link is more stable for devices where the
direction of orientation is unknown or where multipath is an issue.
The WDMP.2458.A’s low profile design, equipped with a SMA(F) connector, is easy
to install inside a housing or directly onto a PCB mainboard. It has four thru-holes at
the patch corners, allowing users to fix the antenna with screws. The antenna has
passed ISO 16750 high/low-temperature test and random vibration reliability
testing.
Many module manufacturers specify peak gain limits for any antennas that are to be
connected to that module. Those peak gain limits are based on free-space
conditions. In practice, the peak gain of an antenna tested in free-space can
degrade by at least 1 or 2dBi when put inside a device. So ideally you should go for
a slightly higher peak gain antenna than mentioned on the module specification to
compensate for this effect, giving you better performance.
Upon testing of any of our antennas with your device and a selection of appropriate
layout, integration technique, or cable, Taoglas can make sure any of our antennas’
peak gain will be below the peak gain limits. Taoglas can then issue a specification
and/or report for the selected antenna in your device that will clearly show it
complying with the peak gain limits, so you can be assured you are meeting
regulatory requirements for that module.
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For example, a module manufacturer may state that the antenna must have less
than 2dBi peak gain, but you don’t need to select an embedded antenna that has a
peak gain of less than 2dBi in free-space. This will give you a less optimized
solution. In that case it will be better to go for a slightly higher free-space peak gain
of 3dBi or more if available. Once that antenna gets integrated into your device,
performance will degrade below this 2dBi peak gain due to the effects of GND plane,
surrounding components, and device housing. If you want to be absolutely sure,
contact Taoglas and we will test. Choosing a Taoglas antenna with a higher peak
gain than what is specified by the module manufacturer and enlisting our help will
ensure you are getting the best performance possible without exceeding the peak
gain
limits.
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2. Specification
ELECTRICAL
2400-2500
Frequency Range (MHz)
Return Loss (dB)
Efficiency (%)
Peak Gain (dBi)
Polarization
5150-5850
< -6
< -7
74.19
5.5
66.97
7.3
RHCP
Axial Ratio
Min. 1.75
Min. 1
Impedance (Ohm)
Input Power
50 Ω
10W
MECHANICAL
50 x 50 x 7.07 (without connector)
50 x 50 x 16.57 (with connector )
PTFE composites
Dimension (mm)
Antenna Patch Material
Connector
SMA(F) ST
32.5
Weight (g)
ENVIRONMENTAL
Operation Temperature
Storage Temperature
-40°C ~ + 85°C
-40°C ~ + 85°C
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3. Antenna Characteristics
3.1 Test set-up
Y
X
Z
Figure 1. Peak gain, efficiency and radiation pattern measurements
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3.2 Return Loss
Figure 2. Return Loss
3.3 Efficiency
Figure 3. Efficiency
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3.4 Peak Gain
Figure 4. Peak Gain.
3.5 Average Gain
Figure 5. Average Gain
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3.6 Axial Ratio
Figure 6. Axial Ratio
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3.7 Radiation Patterns
2D Patterns
XY-Plane
X
Y
X
Y
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XZ-Plane
Z
X
Z
X
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YZ-Plane
Z
Y
Z
Y
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3D Patterns
Figure 7. 3D Radiation Pattern at 2450 MHz
Figure 8. 3D Radiation Pattern at 5550 MHz
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4. Drawing (unit: mm)
Figure 9. Dimensions and Drawing
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5. Packaging
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Figure 10. Package
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6. Installation Instructions
There might be situations where the WDMP.2458.A needs to be sit firmly on the
device board, either a plastic or a metal board. The patch provides four screw holes
for this purpose.
This section illustrates the type of screw and screw/connector holes dimension
should be considered for installation.
Screw type : Non-conductive M3 screw
Nut type : Non-conductive HEX M3 nut
On-board screw holes dimension : Ø 3.2mm
On-board connector holes dimension : 18 x 8 mm
Figure 1. Dimensions of screw holes and connector hole on implemented board
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Figure 2. Exploded view of screw installation
Figure 3. Screw length calculation. X = implemented board thickness
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7. Application Note
The WDMP.2458.A has the same performance either in free space or on ground
plane.
Following charts show the return loss, efficiency and peak gain in free space, on
10x10, 20x20 and 30x30cm ground plane.
7.1 Return loss
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7.2 Efficiency
7.3 Peak Gain
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