Wideband filter‐integrated coupled‐line coupler with unequal power division and inherent DC‐block function. Issue 1 (January 2016)

• Record Type: Journal Article
• Authors: Wu, Yongle; Jiao, Lingxiao; Du, Yating; Liu, Yuanan
• Is Part Of: Microwave and optical technology letters. Volume 58:Issue 1(2016:Jan.)
• Page Start: 121
• Page End: 123
• Publication Date: 2016-01
• Subjects: coupled line -- coupler -- unequal power division -- DC block; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.29503
• Languages: English
• ISSNs: 0895-2477

Abstract

ABSTRACT: This letter reports a novel single‐layer planar coupled‐line coupler with multiple prominent advantages. These advantages include compact size, wideband filter‐integrated coupling and transmission, unequal power division, flat phase difference, and inherent DC‐block function between two arbitrary ports. Eventually, a microstrip prototype with 7.1‐dB power‐division ratio is implemented for verification, whose fractional bandwidth of 20‐dB return loss is 58.4%. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:121–123, 2016