Abstract
A novel variable inductor using mutual current control was developed and applied to a 4.5-GHz SiGe voltage controlled oscillator (VCO). It consists of a primary inductor, a secondary inductor, and a variable capacitor, and its inductance can be tuned by adjusting the capacitance of the capacitor. It was designed for application to a proposed 4.5-GHz VCO in 0.25-μm SiGe BiCMOS technology. It exhibited a large inductance variation of 22% and a high quality factor of 24 at 4.5 GHz in electro-magnetic simulation. The VCO has a 1.2-GHz tuning range, 32% wider than that of a conventional VCO, and a low phase noise of -121.8 dBc/Hz (at a 1-MHz offset frequency).
| Original language | English |
|---|---|
| Title of host publication | APMC 2005 |
| Subtitle of host publication | Asia-Pacific Microwave Conference Proceedings 2005 |
| DOIs | |
| Publication status | Published - 2005 Dec 1 |
| Externally published | Yes |
| Event | APMC 2005: Asia-Pacific Microwave Conference 2005 - Suzhou, China Duration: 2005 Dec 4 → 2005 Dec 7 |
Publication series
| Name | Asia-Pacific Microwave Conference Proceedings, APMC |
|---|---|
| Volume | 2 |
Other
| Other | APMC 2005: Asia-Pacific Microwave Conference 2005 |
|---|---|
| Country | China |
| City | Suzhou |
| Period | 05/12/4 → 05/12/7 |
Keywords
- C-band
- SiGe HBT
- VCO
- Variable inductor
- W-CDMA
- Wide tuning range
ASJC Scopus subject areas
- Engineering(all)
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Cite this
Nakamura, T., Masuda, T., Kodama, A., & Washio, K. (2005). A variable inductor using mutual-current control and application to a SiGe 4.5-GHz VCO for wide tuning range. In APMC 2005: Asia-Pacific Microwave Conference Proceedings 2005 [1606398] (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 2). https://doi.org/10.1109/APMC.2005.1606398