摘要
3dB定向耦合器在组成微波器件中有着广泛的应用,在我们的实验室中最常用到的带有3dB定向耦合器的微波器件是移相器、衰减器和能量倍增器等,3dB定向耦合器的性能参数对上述器件的性能起着决定性的作用.在对原有S-band 3dB定向耦合器模拟研究的基础上,通过对不同组数据的分析比较,提出了此结构的优化设计方案.重新设计后的3dB定向耦合器不仅简化了加工工艺,而且驻波比、不平衡度、隔高度都达到了更好的效果.将新设计的定向耦合器应用到移相器中,通过对新老移相器的模拟和测试结果的比较可以看到移相器的各项指标均比原来有所提高,而这也是以往移相器所无法达到的新指标.对新加工的移相器试验件的测试数据表明,实验测试和模拟计算的一致性很好.
The application of the 3dB directional coupler is very extensive,such as the phase shifter,the attenuator and the RF pulse compressor etc.The performance of the 3dB directional coupler is very important for these components. Optimization design has been done using the HFSS code.The new phase shifter prototype using the new optimization results has been tested.The tested results are in agreement with the measured ones.
