Name
Title | ||
|---|---|---|
124-GHz CMOS quadrature voltage-controlled oscillator with fundamental injection locking |
Abstract | ||
|---|---|---|
A 124-GHz injection-locked quadrature voltage-controlled oscillator (ILQVCO) fabricated using a 40-nm CMOS process is presented. It locks onto a fundamental reference signal at 124 GHz generated on-chip from an external reference at 31 GHz, thereby avoiding generation of spurious noise commonly seen in the phase noise spectra of subharmonically injection-locked VCOs. The QVCO's phase noise levels in the free-running and injection-locked conditions are -87 dBc/Hz and -117 dBc/Hz, respectively, at 1-MHz offset. The high fundamental oscillation frequency and the low phase noise are realized by adopting a ring-type topology and transformers for inter-stage impedance matching. The ILQVCO is combined with an on-chip double-balanced quadrature modulator for vector signal generation. A 32QAM signal thus generated achieved a data rate of 25 Gb/s with an error-vector magnitude (EVM) of 5.1%. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/ASSCC.2015.7387510 | 2015 IEEE Asian Solid-State Circuits Conference (A-SSCC) |
Keywords | Field | DocType |
CMOS,injection locking,millimeter wave,phase modulation,QVCO | Logic gate,Phase modulation,Computer science,Phase noise,Impedance matching,Injection locking,Electronic engineering,CMOS,Quadrature (mathematics),dBc,Electrical engineering | Conference |
Citations | PageRank | References |
1 | 0.40 | 7 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Kyoya Takano | 1 | 37 | 11.64 |
| Kosuke Katayama | 2 | 31 | 8.54 |
| Takeshi Yoshida | 3 | 30 | 9.22 |
| Shuhei Amakawa | 4 | 29 | 10.93 |
| Minoru Fujishima | 5 | 96 | 30.68 |