| Autor: |
Gwang Sub Kim, Kwang-Il Oh, Donghyun Baek |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 12, Pp 60620-60627 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2024.3390778 |
| Popis: |
This paper introduces a class-B/C nested-gm voltage-controlled oscillator (VCO) with coupled tail filtering in the 28 GHz band. The addition of only two cross-coupled NMOSs duplicates the gm to boost the transconductance. This topology exhibits the characteristics of coupled VCOs, such as when two VCOs are interconnected through a transformer. The core area is minimized by implementing a tail-filtering inductor for a secondary harmonic filter in same space with the primary transformer. The proposed VCO is fabricated with a 65-nm CMOS process, an output frequency of 25.4–29.12 GHz, and a $K_{VCO}$ of 3.72 GHz/V. It has a supply voltage of 1 V and consumes 16.8 mW of power. It exhibits a phase noise of –105.34 dBc/Hz with a 1 MHz offset. The proposed VCO has a core area of 0.06 mm2. The figure of merit (FoM), FoM according to the area, and FoM according to $K_{VCO}$ are –182.37, –194.96, and –192.66 dB, respectively. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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