A Single-Layer Planar Wideband Filtering Single-Ended-to-Balanced Crossover With Excellent Common-Mode Suppression

被引:14
作者
Zheng, Yana [1 ]
Wang, Weimin [1 ]
Wu, Yongle [1 ]
Chen, Weijuan [1 ]
机构
[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China
基金
北京市自然科学基金;
关键词
Scattering parameters; Filtering; Wideband; Integrated circuit modeling; Baluns; Fabrication; Equivalent circuits; Common-mode suppression; filtering; path-isolation; single-ended-to-balanced crossover; single-layer; wideband;
D O I
10.1109/TCSII.2021.3100334
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 brief, a single-layer planar single-ended-to-balanced crossover has been proposed, which has a wideband filtering differential-mode response, wide path-isolation bandwidth, and an excellent common-mode suppression. The complete design procedure and rigorous derivations are demonstrated based on the even-/odd-mode analysis. A 3.5 GHz prototype has been designed, simulated and measured. Finally, the measured 15-dB differential-mode filtering bandwidth and 10-dB common-mode transmission bandwidth are 37.38% and 77.33%, respectively. Besides, a 117% bandwidth of 10-dB path-isolation is also achieved. Moreover, the bandwidth of 22-dB common-mode-to-differential-mode conversion is 143% over the frequency range of 1-6 GHz. This proposed crossover can be an excellent candidate for constructing balanced and unbalanced wireless communication systems.
引用
收藏
页码:364 / 368
页数:5
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