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feed.
to create as much ground plane as possible in proximity to the base
of the antenna. In cases where the antenna is remotely located, or
the antenna is not in close proximity to a circuit board, ground plane,
or grounded metal case, a metal plate may be used to maximize the
antenna’s performance.
5. Place the antenna as far as possible from potential interference
sources. Any frequency of sufficient amplitude to enter the receiver’s
front end will reduce system range and can even prevent reception
entirely. Switching power supplies, oscillators, or even relays can also
be significant sources of potential interference. The single best weapon
against such problems is attention to placement and layout. Filter the
module’s power supply with a high-frequency bypass capacitor. Place
adequate ground plane under potential sources of noise to shunt noise
to ground and prevent it from coupling to the RF stage. Shield noisy
board areas whenever practical.
6. In some applications, it is advantageous to place the module and
antenna away from the main equipment. This can avoid interference
problems and allows the antenna to be oriented for optimum
Always
performance. OPTIMUM use 50-ohm coax, like RG-174, for the remote
NOT RECOMMENDED
USABLE
CASE
NUT
Figure 27: Remote Ground Plane
– 25 –
GROUND PLANE
(MAY BE NEEDED)
发布紧急采购，3分钟左右您将得到回复。
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相关代理商/技术参数
RXM-418-LR
功能描述:射频模块 RF Receiver 418MHz
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
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
RXM-433-LC-S
功能描述:RECEIVER RF 433MHZ SMT RoHS:否 类别:RF/IF 和 RFID >> RF 接收器 系列:LC 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-433-LR
功能描述:射频模块 RF Receiver 433MHz
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
