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| 型号： | TRM-315-LT |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 34/44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 |
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Common Antenna Styles
There are literally hundreds of antenna styles and variations that can be
employed with Linx RF modules. Following is a brief discussion of the styles
most commonly utilized. Additional antenna information can be found in
Linx Application Notes AN-00100, AN-00140, AN-00500 and AN-00501.
Whip Style
A whip-style antenna provides outstanding overall
performance and stability. A low-cost whip is can be
easily fabricated from a wire or rod, but most design-
ers opt for the consistent performance and cosmetic
appeal of a professionally-made model. To meet
this need, Linx offers a wide variety of straight and
reduced-height whip-style antennas in permanent
and connectorized mounting styles.
Figure 36: Whip Style Antennas
L=
The wavelength of the operational frequency determines
an antenna’s overall length. Since a full wavelength is
often quite long, a partial half or quarter-wave antenna is
normally employed. Its size and natural radiation
resistance make it well matched to Linx modules.
The proper length for a straight quarter-wave can be
easily determined using the adjacent formula. It is also
234
F MHz
Figure 37:
L = length in feet of
quarter-wave length
F = operating frequency
in megahertz
possible to reduce the overall height of the antenna by using a helical
winding. This reduces the antenna’s bandwidth, but is a great way to
minimize the antenna’s physical size for compact applications. This also
means that the physical appearance is not always an indicator of the
antenna’s frequency.
Specialty Styles
Linx offers a wide variety of specialized antenna
styles. Many of these styles utilize helical elements
to reduce the overall antenna size while maintain-
ing reasonable performance. A helical antenna’s
bandwidth is often quite narrow and the antenna
can detune in proximity to other objects, so care
must be exercised in layout and placement.
– 30 –
Figure 38: Specialty Style Antennas
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| TRM-433-LT | TRANSCEIVER RF 433MHZ LT SERIES |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TRM4 | 制造商:Ferraz Shawmut 功能描述:Fuse Midget 4A 250V Slow Blow 2-Pin Cartridge Holder |
| TRM-4 | 制造商:Richco 功能描述:RIVET BLACK .130-.155" HOLD |
| TRM-418-LT | 功能描述:射频模块 RF Transceiver 418MHz (NEW) RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
| TRM-433-DP1203 | 功能描述:射频模块 433 MHz Wireless Module DP1203 RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
| TRM-433-DP1205 | 功能描述:射频模块 433 MHz Wireless Module DP1205 RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
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