Modified vertically installed planar couplers for ultrabroadband multisection quadrature hybrid

Hui Chun Chen*, Chi-Yang Chang

*此作品的通信作者

研究成果: Article同行評審

29 引文 斯高帕斯(Scopus)

摘要

In this letter, we describe a five-section ultrabroad-band 1-9 GHz microstrip quadrature hybrid (90°, - 3 dB coupler), which uses two types of modified vertically installed planar (YIP) couplers and is suitable for conventional printed circuit board realization. The modified VIP couplers provide not only a way to implement tight coupling value with reduced modal phase velocity difference but also a layout flexibility to minimize the discontinuity between sections. An experimental circuit is designed and fabricated with a passband ripple of ±0.5 dB, a return loss of less than -20 dB, and an isolation of better than 20 dB over the frequency of 1-9 GHz. Very good agreement between the simulated and measured results is obtained.

原文English
文章編號1661639
頁(從 - 到)446-448
頁數3
期刊IEEE Microwave and Wireless Components Letters
16
發行號8
DOIs
出版狀態Published - 1 八月 2006

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