Dual‐band balanced‐to‐unbalanced filtering power divider by coupled ring resonators. Issue 22 (3rd October 2016)

• Record Type: Journal Article
• Authors: Feng, Wenjie; Hong, Meiling; Che, Wenquan
• Is Part Of: Electronics letters. Volume 52:Issue 22(2016)
• Page Start: 1862
• Page End: 1864
• Publication Date: 2016-10-03
• Subjects: power dividers -- UHF filters -- microwave filters -- microwave resonators -- UHF resonators -- band‐stop filters; coupled ring resonators -- dual‐band balanced‐to‐unbalanced filtering power divider -- transmission zeros -- selectivity improvement -- common mode suppression -- bandstop performance -- open stubs -- frequency 2.82 GHz -- frequency 3.22 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.2380
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A dual‐band balanced‐to‐unbalanced filtering power divider by coupled ring resonators is proposed. Two passbands can be easily realised by the two coupled ring resonators. Three transmission zeros near the two passbands are used to improve the selectivity. The common mode can be easily suppressed by the bandstop performance of the open stubs. A fabricated prototype ( ε r = 2.65, h = 1 mm, tan δ = 0.003) with centre frequencies located at 2.82 and 3.22 GHz is designed and measured to prove the proposed methods.