外形设计简洁、紧凑，具有良好的隐藏性，可安装于吊顶内，若吸附在吊顶以下时可充分与室内环境相融合。产品体积小、重量轻、波束角精确、即使安装在金属天花内，也可确保其性能指针覆盖效果有良好表现
The appearance design is simple, compact, with good concealment, can be installed in the ceiling, if adsorbed below the ceiling, it can be fully integrated with the indoor environment. The small size, light weight, and precise beam angle ensure good performance pointer coverage even when installed in a metal ceiling
MIF馈电天线通过接收来自光馈扩展单元（光电）的射频信号再由复合光缆给天线供电，天线以电磁波形式辐射出去，实现信号传输。天线内置智能检测芯片在供电的同时检测天线运行情况诺无法正常运行后台服务器进行报警警告 通知专业人员进行维护。
The MIF feeder antenna receives the radio frequency signal from the optical feed extension unit (photoelectric) and then supplies power to the antenna by the composite optical cable, and the antenna radiates out in the form of electromagnetic waves to realize signal transmission. The antenna has a built-in intelligent detection chip, which detects the operation of the antenna while supplying power, and the background server cannot operate normally, alarms and warns, and notifies professionals for maintenance.
中欧体育MIF天线信号强度更高，插损低，保留信号，避免物理损耗。清晰辨识 安装简易，便于查验 全金属底座 高隔离度，杜绝干扰，最大程度确保信号纯净 加固螺栓轴承 轴承加长，增加接触面积，咬合力更强避免脱落，采用优质树脂材质，耐腐蚀
The Lielong MIF antenna has higher signal strength, low insertion loss, retains the signal, and avoids physical loss. Clearly recognizable Easy to install and easy to inspect All-metal base High isolation, no interference, maximum signal purity Reinforced bolt bearings The bearing is lengthened, the contact area is increased, the bite force is stronger to avoid falling off, and the high-quality resin material is used to resist corrosion
| 型号/Model | GRF400T |
|---|---|
| 增益( dbi)/Gain (dbi) | 2 |
| 回波损耗(dB)/Return loss (dB.) | -35 |
| 频率范围/Frequency range | 80-480Hz |
| 峰值承载功率(w)/Peak Carrying Power (W) | 50 |
| 信道隔离(dB)/Channel Isolation (dB) | 65 |
| 输入端口电压驻波比/VSWR of the input port voltage | <1.2 |
| 输入端口电压驻波比/VSWR of the input port voltage | <1.2 |
| 固定方式/Fixation | 螺旋固定/Spiral fixation |
| 极化方向/Direction of polarization | 垂直极化/Vertical polarization |
| 防护等级/Ingress protection | IP54 |
| 接口类型/Interface type | N-K |
| 温度范围/Temperature range | -30~+60 |
| 储存温度/Storage temperature | -30~+60 |
| 工作湿度/Operating humidity | 5%~95% |
| 阻抗(Ω)/Impedance (Ω) | 50 |
| 灵敏度(dB)/sensitivity（db） | -128 |
| 线材长度(cm)/Wire length (cm) | 25 |
| 吸顶面积(cm)/Ceiling area (cm) | 226 |
| 外观材质/Appearance material | 高密度聚乙烯/High-density polyethylene |
