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| Content Provider | Scientific Research Publishing (SCIRP) |
|---|---|
| Author | Tsai, Cher-Shiung Gan, Kwang-Jow Lin, Ming-Shin |
| Abstract | We demonstrate the design of a novel voltage-controlled oscillator (VCO), which is based on a metal-oxide-semiconductor field-effect transistor (MOS) differential amplifier with active load. This VCO achieves low phase noise and wide tuning range. The phase noise is –120 dBc/Hz at 600 KHz offset from a 1.216 GHz carrier frequency. This value is comparable to that of a LC-based integrated oscillator. The operating frequency can be tuned from 117 MHz to 1.216 GHz with the supply voltage varying from 1.3 V to 3.3 V. Therefore, the tuning range is about 90.38% which is larger than most of the LC and ring oscillator. The VCO circuit, which is constructed using a standard 0.35 μm CMOS technology, occupies only 26.25 × 7.52 μm2 die area and dissipated 10.56 mW under a 3.3 V supply voltage. |
| Starting Page | 307 |
| Ending Page | 310 |
| File Format | HTM / HTML PDF |
| ISSN | 21531285 |
| DOI | 10.4236/cs.2012.34043 |
| Issue Number | 04 |
| Journal | Circuits and Systems |
| Volume Number | 03 |
| e-ISSN | 21531293 |
| Language | English |
| Publisher Date | 2012-10-30 |
| Access Restriction | Open |
| Subject Keyword | Voltage-Controlled Oscillator (VCO) Differential Amplifier Phase Noise Tuning Range Computer Science & Communications Engineering |
| Content Type | Text |
| Resource Type | Article |
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