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| 型号： | RXM-418-LR_ |
| 厂商： | Linx Technologies Inc |
| 文件页数： | 34/40页 |
| 文件大小： | 0K |
| 描述： | RECEIVER 418MHZ LR SERIES |
| 标准包装： | 25 |
| 系列： | LR |
| 频率： | 418MHz |
| 灵敏度： | -112dBm |
| 数据传输率 - 最大： | 10 kbps |
| 调制或协议： | ASK，OOK |
| 应用： | ISM，车库门开启器，RKE |
| 电流 - 接收： | 5mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 特点： | 远程 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 70°C |
| 封装/外壳： | 16-SMD 模块 |
| 包装： | 管件 |
| 其它名称： | RXM-418-LR RXM-418-LR-S |
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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.
Linx antennas and connectors offer outstanding performance at a low
price.
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 31: 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 32:
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 33: Specialty Style Antennas
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| RXM-418-LR_ | 功能描述:RECEIVER 418MHZ LR SERIES RoHS:是 类别:RF/IF 和 RFID >> RF 接收器 系列:LR 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 09/Jan/2012 标准包装:50 系列:* 频率:850MHz ~ 2.175GHz 灵敏度:- 数据传输率 - 最大:- 调制或协议:- 应用:* 电流 - 接收:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 特点:- 电源电压:4.75 V ~ 5.25 V 工作温度:0°C ~ 85°C 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| RXM-418-RM | 功能描述:RECEIVER RF 418MHZ RoHS:否 类别:RF/IF 和 RFID >> RF 接收器 系列:RM 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 09/Jan/2012 标准包装:50 系列:* 频率:850MHz ~ 2.175GHz 灵敏度:- 数据传输率 - 最大:- 调制或协议:- 应用:* 电流 - 接收:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 特点:- 电源电压:4.75 V ~ 5.25 V 工作温度:0°C ~ 85°C 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| RXM430-408 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RXM-433-LC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LC SERIES TRANSMITTER MODULE |
| RXM-433-LC-P | 制造商:未知厂家 制造商全称:未知厂家 功能描述:LC SERIES RECEIVER MODULE DATA |
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