一种L波段国产GaN固态雷达发射机

为了应对国产雷达所有元器件均国产化需求，设计了一款工作频点在1.2GHZ~ 1.4 GHz的国产氮化镓（gallium nitride,GaN）固态雷达发射机。使用国产GaN功率模块对发射系统最大限度地进行小型化设计，降低组件的重量，加强设备的高可靠性及维护方便性设计，进一步完善GaN功率模块在线测试功能，使产品具有高可靠性和完善的雷达故障诊断功能。增加系统的监控、检测及显示功能，并将各种工作状态信号都传输到主监控上，使系统的各种工作状态都能够在终端上显示，使操作人员通过终端界面便可以检查发射系统的各种工作参数，判断发射机的工作状态。在电磁兼容方面通过谐波滤波器对二次谐波的抑制，测试结果表明，发射系统输出信号的二次谐波小于等于-66dB。

The invention relates to a domestic L-band GaN solid-state radar transmitter

In order to cope with the demand of foreign chip ban and domestic radar, a domestic gallium nitride (GaN) solid state radar transmitter is designed at 1.2GHZ~ 1.4GHz. The domestic GaN power module is used to minimize the transmission system and reduce the weight of the components. Strengthen the high reliability and maintenance convenience design of the equipment, further improve the online test function of GaN power module, so that the product has high reliability and perfect radar fault diagnosis function. The monitoring, detection and display functions of the system are added, and all the working state signals are transmitted to the main monitoring, so that all the working states of the system can be displayed on the terminal, so that the operators can check the various working parameters of the transmitting system and judge the working state of the transmitter through the terminal interface. In terms of suppressing the second harmonic suppression by the harmonic filter, the test results show that the second harmonic of the output signal of the transmitting system is less than or equal to -66dB.