C波段SIR滤波器小型化的研究

C波段SIR滤波器小型化的研究

内容简介：微带SIR滤波器有尺寸小、成本低、易于集成和寄生通带可调节的优点，在微波电路中有着广泛的应用。文中给出的C波段内耦合SIR滤波器比起传统的发卡型SIR滤波器体积进一步减小。该滤波器选用的滤波器阶数为5阶，总尺寸为20mm×20mm。中心频率为5．0675GHz，通带为4．6675GHz-5．4675GHz，带宽800MHz，带内插损优于1．5dB，在4GHz和6GHz处抑制大于30dB。可用于跳频频率源的滤波电路。

Abstract：Microstrip SIR filter has advantages of small size, low cost, easy integration and adjustable parasitic pass- band, which is widely used in microwave circuit. The C-band inner-coupled SIR filter has smaller volume compared with the traditional card-based SIR filter. The filter selected 5 order filter, whose total size is 20 mm× 20 mm, center fre- quency is 5. 067 5 GHz, passband is 4. 667 5 GHz--5. 467 5 GHz, bandwidth is 800 MHz, in-band insertion loss better than 1.5 dB, and suppression is better than 30 dB at 4 GHz and 6 GHz. This filter can be applied to hopping frequency source.

作者：陈华君, 肖清泉, 杨涛,

关键词：C波段, 内耦合, SIR滤波器, 小型化