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IEEE Microwave and Guided Wave Letters
Volume 10 Number 10, October 2000

Table of Contents for this issue

Complete paper in PDF format

Novel Uniplanar 180 ° Hybrid-Ring Couplers with Spiral-Type Phase Inverters

Chih-Wai Kao and Chun Hsiung Chen

Page 412.

Abstract:

Novel uniplanar 180° hybrid-ring couplers consisting of coplanar-waveguide (CPW) rings and spiral-type phase inverters are proposed. In this study, CPW phase inverters with single-spiral and twin-spiral type slotline short stubs are utilized to design the hybrid-ring couplers. Specifically, two hybrid-ring couplers with 33% (single-spiral type) and 40% (twin-spiral type) bandwidths are implemented and examined, theoretically and experimentally.

References

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