摘要
在方形贴片上采用单槽线代替相互正交双槽线的方法设计出一款结构简单、紧凑的双频段带通滤波器。详细讨论了滤波器结构参数对滤波器性能的影响,并以2.45/5.2GHz双通带滤波器的设计为例,通过仿真优化得到了各结构参数,制作了相应的样品。测试结果表明:该滤波器在2.45GHz通带内回波损耗为20dB,通带内最小插损为0.9dB,相对带宽为10%;5.2GHz通带内回波损耗33.6dB,通带内最小插损为0.37dB,相对带宽为13.4%,其总体尺寸比文献中正交双槽线结构的滤波器缩小48%。
A new type dual-band BPF using a single slotted patch resonator （SPR） is proposed. The slot tilted at 45° is embedded in the center of λ /4 patch resonator for generating the second passband, which is determined by the slot length and width. The effects of the proposed filter structure parameters are studied in detail. With simulation software, a dual-bandpass filter operating at 2.45/5.2 GHz is obtained. As compared with the conventional dual-band BPF with cross-slotted structure, the dual-bandpass BPF could achieve a size reduction of 48%.
出处
《通信技术》
2010年第8期255-257,共3页
Communications Technology
关键词
双通带
带通滤波器
单槽线
紧凑型
dual band
bandpass filter
single slotted
compact size
