| Autor: |
Junkai Yan, Jianguo Wang, Wenxi Hao, Xinhong Cui, Yingjun Liu, Xiaoxin Zhu, Zhiqiang Zhang |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
IEEE Access, Vol 8, Pp 113383-113391 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2020.3002501 |
| Popis: |
In the case of characterizing waveguide mode converter, the widely applied back-to-back method can only extract two mode converters' joint S-parameters, the accuracy of the far-field radiation pattern method is limited. This paper experimentally demonstrates a method for accurately characterizing single circular TM01-TE11 mode converter, which consists of extracting the asymmetric two-port TM01 and TE11 mode generator test fixtures' S-parameters and de-embedding them from the “TM01 mode generator + TM01-TE11 mode Converter + TE11 mode generator” cascade measurement results. The peak problem occurring in measuring overmoded circular waveguide devices with VNA is analyzed and settled with an offset waveguide based peak-shifting tactic plus the Loess smoothing method. Fairly good agreement between the simulated and finally extracted complex S-parameter matrix of a TM01-TE11 mode converter throughout the device's working frequency span validates the proposed method's merits over traditional methods. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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