Abstract
In this paper, we propose an on-chip waveguide beamforming system for a 28 GHz millimeter-wave signal based on silicon-on-insulator (SOI) technology. The system consists of four true time delay (TTD) lines, each of which consists of nine Bragg gratings with different periods. The minimum period of the grating is 312 nm, and the maximum period is 344 nm. By optimizing the position of the Bragg grating in the adjacent TTD lines, a time delay difference can be generated between the adjacent channels. By adjusting the operation wavelength of the optical carrier, the TTD lines can provide 9 different beamforming direction angles from ${-}{60}^\circ$ to 60° when the direction angular resolution is 15°. This proposed system has a useful application prospect in the phased array antennas of millimeter-wave communication.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Nimish Kumar Srivastava and Sanjeev Kumar Raghuwanshi
Appl. Opt. 59(10) 3010-3018 (2020)
Gencheng Wang, Tingge Dai, Jianfei Jiang, Xiaoqing Guo, Bei Chen, Yuehai Wang, Hui Yu, Xiaoqing Jiang, and Jianyi Yang
Appl. Opt. 57(18) 4998-5003 (2018)
Weimin Zhou, Michael Stead, Steven Weiss, Olukayode Okusaga, Lingjun Jiang, Stephen Anderson, and Z. Rena Huang
Appl. Opt. 56(3) B5-B13 (2017)