一种微波附件组合的设计与实现

Design and implementation of a microwave accessory combination

摘要:

在综合测试与诊断领域，随着被测系统复杂性的提高，对测试系统准确度要求进一步提高。文中设计实现了一种微波附件组合，主要由微波开关、衰减器、功率放大器和电源组成。该设备实现了各项技术指标要求，其中微波开关的驻波比在DC-1GHz时不大于1.3，在1GHz-18GHz时不大于1.5；衰减器的衰减量是40dB，精度是±3.5dB，驻波比不大于1.6；功率放大器的频率范围在0.9GHz～1.3GHz范围之内，输出功率不小于5W。该微波附件组合结合信号源、频谱仪、功率计及各类模拟器等射频仪器资源来实现射频测量通道的资源扩展、大功率信号的衰减调理、微波功率合成等功能。以满足被测试对象飞机系统中的微波射频系统、部件等微波信号性能测试的测试需求。

Abstract:

In the field of comprehensive test and diagnosis, with the improvement of the complexity of the tested system, the accuracy of the test system is required to be further improved. In this paper, a combination of microwave accessories is designed and implemented, which is mainly composed of microwave switch, attenuator, power amplifier and power supply. The equipment has achieved various technical requirements, among which the standing wave ratio of microwave switch is not more than 1.3 at dc-1ghz and 1.5 at 1ghz-18ghz; the attenuation of attenuator is 40dB, the accuracy is ± 3.5db, the standing wave ratio is not more than 1.6; the frequency range of power amplifier is 0.9ghz-1.3ghz, and the output power is not less than 5W. The combination of microwave accessories and RF instrument resources such as signal source, spectrometer, power meter and various simulators can realize the resource expansion of RF measurement channel, attenuation and conditioning of high-power signal, microwave power synthesis and other functions. In order to meet the test requirements of microwave RF system, components and other microwave signal performance test in the tested aircraft system.