| Autor: |
Tongxuan Zhou, Ge-Liang Yang, Rui Chen, Hao Zhang, Keping Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 9, Pp 94416-94425 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2021.3093508 |
| Popis: |
This paper presents a 1:2 wideband CMOS balun, and its application for sub-6 GHz wideband front-end. In order to eliminate the amplitude/phase mismatch, the primary and secondary windings are shorted by a transmission line (T-line) for a common ground. The float metal in the primary winding is used for artificial dielectric compensation which further reduce the amplitude imbalance by up to about 0.5 dB. A 2.0-to-3.7 GHz wideband RF front-end is also designed by using the proposed CMOS balun. The balun and RF front-end are fabricated in a 0.13- $\mu \text{m}$ bulk CMOS technology. The bandwidth of the balun with $\vert \text {S}11\vert < {-}10$ dB is 2.2-to-5.1 GHz. The fractional bandwidth is large than 79.5%. The corresponding maximum amplitude and phase mismatch is 1.5 dB and 2°, respectively. The measured insertion loss is 4.8-to-5.6 dB from 2.2 to 5.1 GHz. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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