Design of compact microstrip bandpass filter with two switchable operating passbands. Issue 1 (6th October 2021)

• Record Type: Journal Article
• Authors: Chen, Chi‐Feng; Tseng, Hsin‐Ya; He, Yi‐Hua; Li, Wen‐Jie
• Is Part Of: Electronics letters. Volume 58:Issue 1(2022)
• Page Start: 19
• Page End: 21
• Publication Date: 2021-10-06
• Subjects: Electronics -- Periodicals; 621.381
• DOI: 10.1049/ell2.12336
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract: A new bandpass filter (BPF) with two switchable operating passbands has been proposed. The BPF topology is formed by switchable resonators and stepped‐impedance resonators. The two operating bands can be switched on and off independently. For verification, a switchable BPF with a third‐order Chebyshev bandpass response was designed and fabricated using microstrip technology. The developed BPF was measured to verify the predicted and simulated results. A close agreement was observed between them. The proposed switchable BPF has good in‐band and out‐of‐band performances. Besides, the attenuation is > 30 dB as the passband is switched off.