Multiband bandpass filter technologies

作者：Chu, Qing-Xin; Chen, Fu-Chang^*

来源：Journal of South China University of Technology(Natural Science Edition), 2012, 40(10): 219-226.

DOI：10.3969/j.issn.1000-565X.2012.10.031

• Design and implementations
• Dual-band bandpass filter
• Multiband bandpass filters
• Multiband filters
• Passband frequencies
• Stepped impedance resonator
• Stub-loaded resonators
• Tri-band bandpass filter

Based on the research results of the authors and their team, this paper introduces the recently-deve-loped techniques for the design and implementation of multiband bandpass filters, namely, designing dual- and tri-band bandpass filters respectively with multi-passband resonators to obtain independently-controllable passband frequency and bandwidth, with stepped impedance resonators to minimize the filter size, and with stub-loaded resonators to obtain conveniently-controllable passband frequency, and, developing tri- and quad-band bandpass filters with assembled resonators to obtain improved stopband rejection characteristic and more passbands. Moreover, a high-order dualband bandpass filter using multi-stub-loaded resonators is also introduced, a key merit of which is that the characteristics of the second passband can be conveniently controlled whereas those of the first passband remain unchanged.

• 出版日期2012-10
• 单位华南理工大学