A Switchable Dual-Band Bandpass Filter With Flexible Band Allocation

被引：1
|
作者：
He, Yi-Hua [1 ]
Chen, Chi-Feng [1 ]
Tseng, Hsin-Ya [1 ]
Li, Wen-Jie [1 ]
机构：
[1] Tunghai Univ, Dept Elect Engn, Taichung 40704, Taiwan
来源：
2021 IEEE INTERNATIONAL SYMPOSIUM ON RADIO-FREQUENCY INTEGRATION TECHNOLOGY (RFIT) | 2021年
关键词：
bandpass filter (BPF); dual-band; microstrip; switchable; stepped-impedance resonator (SIR); DIPLEXER; COMPACT; DESIGN;
D O I：
10.1109/RFIT52905.2021.9565288
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：
In this paper, a new switchable dual-band bandpass filter (BPF) was proposed. The proposed BPF could provide two switchable dual-passband operating states. Only one bias voltage is required to achieve the switching function. The BPF was designed based on stepped-impedance resonators (SIRs), leading to a small circuit size and wide stopband response. Moreover, all passbands can be well controlled and designed independently. For a demonstration, a switchable dual-band BPF with third-order Chebyshev bandpass response was designed and fabricated using microstrip technology. For the state I, 0.9- and 1.2-GHz passbands are switched on; for the state II, 13- and 1.8-GHz passbands are switched on. Furthermore, the stopband rejection is > 20 dB when the passbands are turned off.
引用
收藏
页数：3
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