Miniaturized Dual-wideband Bandpass Filter Using Coupled Slotted Open Stubs

被引:0
|
作者
Alburaikan, Abdullah [1 ]
Aqeeli, Mohammed [1 ]
Hu, Zhirun [1 ]
机构
[1] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
关键词
Bandpass filter (BPF); wideband; dual-band; high selectivity; miniaturization;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents the design of a super-compact dual-wideband bandpass filter (BPF) using quarter-wavelength slotted open-circuited stubs (SOSs). These slotted open stubs are used to define the second and the third stopbands at 3 and 9 GHz respectively. Both stubs are separated by quarter-wavelength impedance transformers. Unlike conventional quarter-wavelength impedance transformers, this filter has a high-pass meandered line that is shorted to ground to form an additional stopband at zero frequency. Using this approach, a dual-wideband bandpass filter is designed, fabricated and measured. The measured results show that the fabricated dual-wideband BPF has two passbands with a fractional bandwidth of 117% and 36%, at respective center frequencies of 1 GHz and 6.65 GHz. The filter has a compact size (0.09 lambda g x 0.05 lambda g) and exhibits an attenuation level greater than 20 dB up to 12 GHz.
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页数:3
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