Development of 6 inch 80–170 GHz Broadband Silicon Plated Horn Antenna Arrays for Primordial Gravitational Wave Search
Abstract Searching for primordial gravitational waves in the cosmic microwave background (CMB) polarization signal is one of the key topics in modern cosmology. Cutting-edge CMB telescopes require thousands of pixels to maximize mapping speed. Using a modular design, the telescope focal plane is simplified to several detector modules. Each module has hundreds of pixels including antenna arrays, detector arrays, and readout arrays. The antenna arrays, as the beam defining component, determine the overall optical response of the detector module. In this article, we present the developments of 6 inch broadband antenna arrays from 80 to 170 GHz for the future IHEP focal plane module. The arrays are fabricated from 42 6 inch silicon wafers including 456 antennas, 7% more pixels than the usual design. The overall in-band cross polarization is smaller than −20 dB and the in-band beam asymmetry is smaller than 10%, fulfilling the requirements for primordial gravitational wave search.
Authors
- Xufang Li (ORCID: https://orcid.org/0000-0002-2793-9857)
- Yuanhang He
- Daikang Yan (ORCID: https://orcid.org/0000-0003-4358-7959)
- Congzhan Liu (ORCID: https://orcid.org/0000-0002-4834-9637)
- X. F. Lu (ORCID: https://orcid.org/0000-0003-1272-3997)
- Yongjie Zhang (ORCID: https://orcid.org/0000-0003-3017-7838)
- Xiang Li (ORCID: https://orcid.org/0000-0002-5894-3429)
- Aimei Zhang (ORCID: https://orcid.org/0000-0002-3571-3065)
- Zhi Chang (ORCID: https://orcid.org/0000-0003-4856-2275)
- S. Shu (ORCID: https://orcid.org/0000-0002-6370-2101)
- Ye Chai
- Zhouhui Liu
- Yifei Zhang (ORCID: https://orcid.org/0000-0001-5961-9180)
- Guofeng Wang (ORCID: https://orcid.org/0000-0001-8459-0308)
- Yaqiong Li (ORCID: https://orcid.org/0000-0001-8093-2534)
- Wenhua Shi
- H. Gao (ORCID: https://orcid.org/0009-0006-5688-0870)
- Zhengwei Li (ORCID: https://orcid.org/0000-0002-7222-5626)
- Cao Junwei
- Yudong Gu
- Zhongxue Xin
Institutions
- Chinese Academy of Sciences (CN)
- Suzhou Institute of Nano-tech and Nano-bionics (CN)
- Institute of High Energy Physics (CN)
- University of Chinese Academy of Sciences (CN)
- Xiangtan University (CN)
Publication Details
- Journal
- Research in Astronomy and Astrophysics
- Published
- 2025-03-17
- DOI
- https://doi.org/10.1088/1674-4527/adc187
- Primary Topic
- Pulsars and Gravitational Waves Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00