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This study proposes a novel technique for a 2D beam steering system using hybrid plasmonic phase shifters with a cylindrical configuration in a 2D periodic array suitable for LIDAR applications. A nanoscale VCSEP design facilitates a sub-wavelength spacing between individual phase shifters, yielding an expanded field of view and side lobes suppression. The proposed design includes a highly doped sub-micron silicon pillar covered by a thin layer of nonlinear material and an additional conductive metal layer. Characterization of a single VCSEP demonstrated a Free Spectral Range (FSR) of 53.28 ± 2.5 nm and a transmission variation of 3 dB, with VπL equal to 0.075 V-mm.
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A D-band Calibration-Free Passive 360° Phase Shifter With 1.2°RMS Phase Error in 45 nm RFSOI
This paper presents a new concept of passive phase shifters based on manipulating propagation delay through two parallel transmission lines periodically connected via digitally controlled switch networks. The proposed approach enables precise phase control and flat amplitude response across different phase settings. The prototype IC is fabricated in a 45 nm RFSOI process and occupies only 0.033 mm^2 . The phase control operates with 11.25°steps over 360° at 140 GHz while maintaining an RMS phase error of 1.2°. The insertion loss is 11.5 dB with < ±0.8 dB variation. Among published D-band phase shifters, this work achieves the lowest RMS phase error and reports bi-directional phase control over 360° and calibration-free operation.
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- Award ID(s):
- 2151190
- PAR ID:
- 10484997
- Publisher / Repository:
- IEEE
- Date Published:
- Journal Name:
- 2023 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
- ISBN:
- 979-8-3503-2122-7
- Page Range / eLocation ID:
- 289 to 292
- Format(s):
- Medium: X
- Location:
- San Diego, CA, USA
- Sponsoring Org:
- National Science Foundation
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