Compact 3‐dB waveguide hybrid with full bandwidth. Issue 1 (1st January 2016)

• Record Type: Journal Article
• Authors: Wu, Chenyang; Wang, Qingyuan; Tian, Xi
• Is Part Of: Electronics letters. Volume 52:Issue 1(2016)
• Page Start: 51
• Page End: 52
• Publication Date: 2016-01-01
• Subjects: waveguides -- power dividers -- loss measurement; compact waveguide hybrid -- waveguide sections -- patent pending -- return loss -- power‐split unbalance -- Ka‐band waveguide bandwidth -- frequency 26.3 GHz to 40 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.2579
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A compact waveguide 3‐dB hybrid with full bandwidth is proposed in this Letter. The tight coupling and full bandwidth of Ka‐band (from 26.3 to 40 GHz) are achieved by introducing multi‐sections of waveguide with different width and depth, together with loaded posts on the bottom of some waveguide sections. The whole structure is symmetric both longitudinally and transversely (patent pending). The measured results show that return loss and isolation of the hybrid better than 25 dB and 26 dB, respectively, phase difference of the two output terminals within 90° ± 3° and the power‐split unbalance within 3.1 dB ± 0.5 dB are achieved over the full Ka‐band waveguide bandwidth.