Design of an eight-hole directional coupler for W-band cryogenic receivers
For the system noise temperature calibration of the K/Q/W triple-band cryogenic receiver on Tianma Radio Telescope (TMRT), a design of W-band eight-hole waveguide directional coupler is proposed in this paper. Based on the hole coupling principle proposed by Gian Guido Gentili, a simulation model of the eight-hole coupler is designed by ANSYS HFSS. Both simulation and experimental results demonstrate that the coupler exhibits excellent performance across the 80–110 GHz, with a coupling coefficient ranging from −25 dB to −26 dB, a directivity greater than 11 dB, and an isolation below −38 dB.
Authors
- Pu Zhang (ORCID: https://orcid.org/0000-0002-9765-7687)
- Junzhi Wang (ORCID: https://orcid.org/0000-0002-9872-1361)
- Zhengyu Yan (ORCID: https://orcid.org/0009-0006-7511-9948)
- Hui Zhang (ORCID: https://orcid.org/0000-0001-6415-7005)
- Chao Zhang (ORCID: https://orcid.org/0000-0002-5682-2906)
- Weiye Zhong (ORCID: https://orcid.org/0000-0003-4328-8596)
- Jia Ma
Institutions
- Shanghai University (CN)
- Guangxi University (CN)
- Chinese Academy of Sciences (CN)
- Shanghai Astronomical Observatory (CN)
Publication Details
- Journal
- Frontiers in Astronomy and Space Sciences
- Published
- 2025-03-14
- DOI
- https://doi.org/10.3389/fspas.2025.1538558
- Citations
- 1
- Primary Topic
- Microwave Engineering and Waveguides
- Type
- article
- Field-Weighted Citation Impact
- 0.73