参数资料
型号: EVAL-418-LT
厂商: Linx Technologies Inc
文件页数: 11/16页
文件大小: 0K
描述: KIT EVAL FOR LT SERIES 418MHZ
特色产品: LT Series Long-Range RF Transceiver Modules
标准包装: 1
系列: LT
类型: 收发器
频率: 418MHz
适用于相关产品: LT 系列 RF 模块 - 418MHz
已供物品: 2 个板,4 个收发器,2 个代码转换器,2 根天线,电池,2 个连接器,文档
Using the Boards as a Design Reference
The basic evaluation boards included in this kit are very simple, yet they
illustrate some important techniques that you may wish to incorporate into
your own board layout. You will observe that the LT mounting pads extend
slightly past the edge of the part. This eases hand assembly and allows for
better heat conduction under the part if rework is necessary. Next, observe
the use of a full ground plane fill on the lower side of the board. This ground
plane serves three important purposes:
First, since a quarter-wave antenna is employed, the ground plane is
critical to serve as a counterpoise (you may wish to read Application Notes
AN-00500 and AN-00501 for additional details on how a ground plane
affects antenna function).
Second, a ground plane can help minimize the transfer of noise between
stages of a product, as well as unintentional radiation of noise into free
space.
Third, a ground plane allows for the implementation of a microstrip feed
to the antenna. The term microstrip refers to a PCB trace running over
a ground plane that is designed to serve as a 50-ohm transmission line
between the module and the antenna. A microstrip is implemented on
this evaluation board. If you are unfamiliar with microstrip calculations, you
may wish to refer to the LT Series Transceiver Module Data Guide or the
calculator available on our website, www.linxtechnologies.com.
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