A Narrow Bandpass Filter with Wide Stopband Using Short-ended Resonator and Open-Loop Resonator with Microstrip/Slot Broadside-Coupled Unit
A new and miniaturized narrow bandpass filter (BPF) with very wide upper stopband is proposed. The filter consists of an open-loop resonator with the broadside coupled microstrip/slot hybrid unit and a microstrip open-loop resonator with shortcircuited units, and the two resonators are edge-coupled to improve the performance of the filter. The effective area of designed filter is about 40.4×20 mm2, which shows the compact configuration for the narrow-band filter. The proposed filter has been designed, simulated, and optimized for the wireless communication system. The simulated frequency responses have demonstrated a good narrow-band property from 1.20 GHz to 1.28 GHz (-3 dB bandwidth), which is fractional bandwidth (FBW) of 6.5％ at the center frequency 1.24 GHz. Additionally, the filter has also exhibited a wide stopband property up to 13 GHz. Thus, a high selectivity of the proposed filter has been achieved.
H. Chen Z.-Q. Zhao Y.-X. Zhang Y.-H. Wu Y.-M. Yang
School of Electronic Engineering University of Electronic Science and Technology of China Chengdu, 610054, Sichuan, China
国际会议
2010 International Conference on Communications,Circuits and Systems(2010年通信、电路与系统国际会议)
成都
英文
699-701
2010-06-28（万方平台首次上网日期，不代表论文的发表时间）