小型化交指型LTCC带通滤波器设计
The Design of a Miniaturized Interdigital LTCC Bandpass Filter
作者: 乔冬春 , 戴永胜 ：南京理工大学电子工程与光电技术学院，江苏 南京;
关键词: 带通滤波器； 交指型； 加载电容； 低温共烧陶瓷； 小型化； 交叉耦合； Bandpass Filter； Interdigital； Capacitance-Loading； Low Temperature Co-Fired Ceramic； Miniaturization； Cross-Coupling
摘要:Abstract: A method of designing miniaturized interdigital bandpass filter based on LTCC technology was proposed, through loading ground capacitance at the end of interdigital transmission line, com-pressed the volume of resonator, to arrange the ground capacitance in discrete space, avoided the coupling interference between themselves, then cross-coupling was introduced between nonad-jacent resonator, generated two transmission zeros on both sides of the passband and improved the sideband suppression. A interdigital bandpass filter with center frequency 2.3 GHz and bandwidth 200 M was designed, the insertion loss was less than 2.5 dB, passband fluctuation was better than 0.5 dB, HFSS was used to construct the 3D model and optimize the simulated results, then fa-bricated the filter with LTCC technology, the size was only 3 mm × 2 mm × 1.5 mm, the measured curves confirmed well with the simulated curves, verified the validity of the design.
文章引用: 乔冬春 , 戴永胜 (2016) 小型化交指型LTCC带通滤波器设计。 无线通信， 6， 33-38. doi: 10.12677/HJWC.2016.62005
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