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参数资料
| 型号： | AWP24U |
| 厂商： | Artaflex Inc |
| 文件页数： | 17/23页 |
| 文件大小： | 0K |
| 描述： | WIRELESS USB DONGLE |
| 标准包装： | 50 |
| 系列： | WirelessUSB™ |
| 功能： | 收发器 |
| 调制或协议： | DSSS，GFSK |
| 频率： | 2.4GHz |
| 应用： | AMR，HID，RKE，智能设备 |
| 接口： | USB |
| 灵敏度： | -97dBm |
| 功率 - 输出： | 0dBm |
| 数据传输率 - 最大： | 250kbps |
| 电源电压： | 2.4 V ~ 3.6 V |
| 产品目录页面： | 552 (CN2011-ZH PDF) |
| 其它名称： | 748-1002 UNT-0381 |
5.2 Module Placement Strategy
Artaflex wireless modules are RF devices that require proper placement on
PCB to ensure optimal performance. The antenna on the PCB has an omni-
directional radiation pattern. To maximize antenna efficiency, an adequate
grounding plane must be provided under the module. However, the areas
underneath and surrounding the antenna area must be free of copper. The
position of the module on the host board and overall design of the product
enclosure contribute to antenna performance. Poor design effects radiation
patterns and can result in reflection, diffraction, and/or scattering of the
transmitted signal thus limiting the range. Measured radiation patterns of these
modules are available from Artaflex and can be used to benchmark design
performance. In summary:
i. Never place the ground plane or route copper traces directly underneath the
antenna portion of the module.
ii. Never place the antenna close to metallic objects.
iii. Keep wiring, components and objects away from antenna.
iv. Do not place the antenna in a metallic or metalized plastic enclosure.
v. Enclosure walls should be 1cm or more away from the antenna in all
directions.
vi. If possible, mount antenna overhanging the edge of the host board. Add an
uninterrupted ground plane on host board, directly underneath the module, up
to the PCB edge. Adding a ground plane will allow traces to be run on the on
the bottom side of the host board if required. See diagram following.
vii. If antenna cannot be mounted in overhanging position, then provisions must
be made to keep area clear of copper as recommended in diagram.
viii. For designs that require external antenna and U.FL connector, use
recommended antenna. The rules for placement on edge are not required.
However, a ground plane is necessary underneath the module.
Artaflex Inc.
215 Konrad Crescent
Markham, Ontario, Canada
L3R8T9
(905) 479-0148
Page 17 of 23
File: AN-121-0001-R2
http://www.artaflexmodules.com
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