【摘要】 介绍了嵌入式并联λg/4(λg为波长)的开路支节的基本结构与特性。采用带状线,设计了一款中心频率为2.46GHz、阻带宽度50MHz、最大阻带衰减为60dB的三阶嵌入式并联开路支节窄带带阻滤波器。与传统的并联开路支节带阻滤波器相比,嵌入式并联开路支节带阻滤波器的横向尺寸减小,结构紧凑。采用阶梯阻抗谐振器(SIR)结构,按相同指标设计了一款三阶嵌入式SIR窄带带阻滤波器。与嵌入式并联开路支节带阻滤波器相比,嵌入式SIR带阻滤波器结构更为紧凑,纵向尺寸缩小约17.5%,并具有更好的谐波抑制特性。更多还原

【Abstract】 Embedded parallelλ/4(λis the wavelength)open stub structure and its band-stop properties were presented.Embedded open stub structure was applied to design a 3-order narrow-band strip-line band-stop filter,which had the center frequency of 2.46GHz,the stop-band bandwidth of 50MHz and the maximum elimination up to 60dB.Compared with the traditional band-stop filter with open-circuited stubs,embedded open stub band-stop filter was more compact in lateral dimension.Based on stepped-impedance resonator(SIR)structure,another compact strip-line band-stop filter with the same target was designed.Compared with embedded open stub band-stop filter,the longitudinal size of the embedded SIR band-stop filter was reduced by about 17.5% with better harmonic suppression characteristics.更多还原