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参数资料
型号： TRM-315-LT
厂商： Linx Technologies Inc
文件页数： 23/44页
文件大小： 0K
描述： TRANSCEIVER RF 315MHZ LT SERIES
特色产品： LT Series Long-Range RF Transceiver Modules
标准包装： 33
系列： LT
频率： 315MHz
数据传输率 - 最大： 10kbps
调制或协议： AM，OOK
应用： 双向传呼，ISM，机器人，遥测
功率 - 输出： 10dBm
灵敏度： -112dBm
电源电压： 2.1 V ~ 3.6 V
电流 - 接收： 6.1mA
电流 - 传输： 12mA
数据接口： PCB，表面贴装
天线连接器： PCB，表面贴装
工作温度： -40°C ~ 85°C
封装/外壳： 表面安装
包装： 管件
Interference Considerations
The RF spectrum is crowded and the potential for conflict with other
unwanted sources of RF is very real. While all RF products are at risk from
interference, its effects can be minimized by better understanding its
characteristics.
Interference may come from internal or external sources. The first step is to
eliminate interference from noise sources on the board. This means paying
careful attention to layout, grounding, filtering and bypassing in order to
eliminate all radiated and conducted interference paths. For many prod-
ucts, this is straightforward; however, products containing components
such as switching power supplies, motors, crystals, and other potential
sources of noise must be approached with care. Comparing your own
design with a Linx evaluation board can help to determine if and at what
level design-specific interference is present.
External interference can manifest itself in a variety of ways. Low-level
interference will produce noise and hashing on the output and reduce the
link’s overall range.
High-level interference is caused by nearby products sharing the same
frequency or from near-band high-power devices. It can even come from
your own products if more than one transmitter is active in the same area. It
is important to remember that only one transmitter at a time can occupy a
frequency, regardless of the coding of the transmitted signal. This type of
interference is less common than those mentioned previously, but in severe
cases it can prevent all useful function of the affected device.
Although technically it is not interference, multipath is also a factor to be
understood. Multipath is a term used to refer to the signal cancellation
effects that occur when RF waves arrive at the receiver in different phase
relationships. This effect is a particularly significant factor in interior
environments where objects provide many different signal reflection paths.
Multipath cancellation results in lowered signal levels at the receiver and
shorter useful distances for the link.
– 19 –
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