定向耦合器。是指天馈系统中为保障每个天线输出功率达到一定范围所使用的线路分支器，定向耦合器以dB为单位，可以将信号不均匀地分成两路，有多种出厂预设规格可供选择使用。
Directional coupler. It refers to the line branch used in the antenna feeder system to ensure that the output power of each antenna reaches a certain range, and the directional coupler is in dB, which can divide the signal into two channels unevenly, and there are a variety of factory preset specifications to choose from.
定向耦合器是射频电路设计中常用的一种射频无源器件，它将线路中传输的射频功率耦合到另一个线路里。在微波通信系统中，将微波信号的功率按一定的比例进行分配，用于监测法师功率，输出频谱，测试发射机到天线端的反射功率，监测天馈系统的匹配情况，也可用于发射机的功率控制。
As a passive device of the branch function in the antenna feeder link transmission of the wireless intercom system, the power divider is a device that divides the energy of an input signal into two or more channels with equal or unequal output.
耦合器有4个端口，两根传输线，传输线之间有一定的耦合，当功率由端口1向端口2传输时，如果端口2,3,4都接匹配负载，则副线上只有端口3有能量输出端口4无能量输出，称为同向定向耦合器，并称端口2为直通端口，3为男合端口，4为隔离端口。
When the RF signal enters the input terminal of the trunk amplifier, the input gain level is adjusted by the fixed slope equalization and slope adjustment to compensate for the loss of the signal in the trunk transmission, so that it enters the module for amplification after debugging
定向耦合器是一种四端口无源器件，有一个输入端口，一个输出端口，一个耦合信号端口以及一个内部端接端口。定向耦合器用于将一条传输线中特定比例的传输功率通过另一个接口或端口进行耦合。信号采样到信号生成和信号注入，定向耦合器可用于各种不同的射频应
Trunk amplifier is an important part of various transmitters, in the pre-circuit of the transmitter, the power of the RF circuit generated by the modulation oscillation circuit is very small, after the three-stage RF amplification treatment, that is, a buffer stage, the middle amplification stage, the last power amplification stage, after obtaining enough RF power, it can be fed to the antenna to radiate out.
表面采用镀金工艺，漆膜坚韧，附着力强，具有极强的抗紫外线和抗腐蚀性，能全面提高图层的使用寿命和清洁性且具备防尘，防水，耐盐碱，抗腐蚀，无惧高温高压环境等产品特性。
The surface is made of gold plating process, the paint film is tough, the adhesion is strong, it has strong resistance to ultraviolet rays and corrosion, which can comprehensively improve the service life and cleanliness of the layer, and has the characteristics of dustproof, waterproof, salt-alkali resist
针对400-470Mhz频段开凿腔体，在专业使用频段具有最优效果。
The cavity is excavated for the 400-470Mhz frequency band, which has the best effect in the professional frequency band.
使用双层PC板，将金属带置于上下PC板之间，固定之后不会因外在因素而产生移动，屏蔽外界电磁波，使内部信号不受外界影响，确保系统的稳定性。
The double-layer PC board is used, and the metal strip is placed between the upper and lower PC boards, which will not move due to external factors after fixing, shielding the external electromagnetic waves, so that the internal signal is not affected by the outside world, and ensuring the stability of the system.
内置匹配负载是由一段波导和能够吸收微波功率的材料组合而成的。在实现系统某一部分呈现行波状态的同时吸收无用的或漏泄的信号，消耗多余的功率，避免瘫痪。
The built-in matching load is a combination of a waveguide and a material capable of absorbing microwave power. While absorbing useless or leaked signals while realizing a certain part of the system to present a traveling wave state, it consumes excess power and avoids paralysis.
| 产品型号 | LPTG-400M-2FZ | 防水防尘 | IP58 |
| 频率范围 | 400-440.450-490MHz | 连续输出功率 | 150w |
| 端芯处理 | 镀金 | 接口数量 | 3 |
| 插入耗损(dB) | ≤1.5 | 接口类型 | N型 |
| 功率容量(w) | 100 | 温度范围 | -30~+60° |
| 输入端口电平驻波比 | 1.25:1 | 工作湿度 | 5%-95% |
| 输出端口电平驻波比 | 1.5:1 | 存储湿度 | -30~+60° |
| 隔离度 | ≥20dB | 阻抗(Ω) | 50 |
| 表面处理 | LTG阳极氧化 | 尺寸（含接头） | 156*58*17mm |
| Product model | LPTG-400M-2FZ | Waterproof and dustproof | -128 |
| Frequency range | 400-440.450-490MHz | Total antenna height | 150w |
| End core treatment | gild | Number of interfaces | 3 |
| Insertion Wear (dB) | ≤1.5 | Interface type | Type N |
| Power Capacity(W) | 100 | Temperature range | -30~+60° |
| Input port level VSWR | 1.25:1 | Operating humidity | 5%-95% |
| Output port level VSWR | 1.5:1 | Store humidity | -30~+60° |
| Isolation | ≥20dB | Impedance (Ω) | 50 |
| Surface treatment | LTG anodizing | Dimensions (including fittings) | 156*58*17mm |
