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High selectivity wideband 180° phase shifters with the functionality of vertical transition
Published online by Cambridge University Press: 19 August 2020
Abstract
In this paper, a high selectivity wideband 180° phase shifter (PS) with the functionality of vertical transition is presented. The whole circuit is realized based on the hybrid microstrip/slotline (SL) structure. By introducing the short-circuited microstrip stepped-impedance resonators, two transmission zeros are created to improve the selectivity of the PS. With the SL in the center ground layer, a frequency independent 180° PS can be obtained. The even/odd-mode equivalent circuits of the proposed PS are analyzed to guide the design. Finally, a practical wideband 180° PS with high filtering selectivity is designed and fabricated to verify the design theory.
- Type
- Passive Components and Circuits
- Information
- International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 3 , April 2021 , pp. 240 - 246
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2020