Reconfigurable Wideband TTD Phase Shifter Based on DGS for Beam Squinting Mitigation
This paper presents a high-performance reconfigurable wideband true-time-delay (TTD) phase shifter based on a defected ground structure (DGS). Impedance matching is enhanced by incorporating two identical microstrip stubs, which function effectively in both the “ON” and “OFF” states of the PIN diodes. A 6-unit DGS-based reconfigurable TTD phase shifter was designed to operate from 0.5 GHz to 2.5 GHz with an insertion loss below 1 dB. Finally, the proposed phase shifter successfully mitigates beam squinting when connected in series within an antenna array.
Authors
- He Zhu (ORCID: https://orcid.org/0000-0002-5157-8457)
- Yan Guo (ORCID: https://orcid.org/0000-0002-5987-201X)
- Yang Xu (ORCID: https://orcid.org/0000-0002-5021-6446)
Institutions
- University of Technology Sydney (AU)
- Commonwealth Scientific and Industrial Research Organisation (AU)
Publication Details
- Published
- 2025-02-10
- DOI
- https://doi.org/10.1109/ams63679.2025.10937791
- Primary Topic
- Microwave Engineering and Waveguides
- Type
- article
- Field-Weighted Citation Impact
- 0.00