Log-domain current-mode quadrature sinusoidal oscillator
| dc.contributor.author | Prommee, Pipat | |
| dc.contributor.author | Prapakorn, Nattawit | |
| dc.contributor.author | Swamy, M. N.S. | |
| dc.date.accessioned | 2026-08-06T10:03:33Z | |
| dc.date.available | 2026-08-06T10:03:33Z | |
| dc.date.issued | 2011-12-14 | |
| dc.description.abstract | A log-domain current-mode quadrature sinusoidal oscillator based on lossless integrators is presented. The circuit is a direct realization of a first-order differential equation for obtaining the lossy and lossless integrators. Each of the log-domain lossless integrators is realized by using only NPN transistors and a grounded capacitor for achieving low-power and fast response. The proposed oscillator uses two-lossless integrator loop which can be electronically tuned through bias currents. A validated BJT model which is used in SPICE simulation operated from a single power supply as low as 2.5 V. The oscillation frequency is controlled over four decades of frequency. The total harmonic distortions for two-phases QSO (12 MHz) is obtained around 0.93% which enables fully integrated in telecommunication systems. The proposed circuit is also suitable for high-frequency applications. Nonideality studies are included and PSpice simulation results confirm the theoretical results. | |
| dc.identifier.citation | Radioengineering, 20(3), 600-607, 2011 | |
| dc.identifier.issn | 12102512 | |
| dc.identifier.other | 2-s2.0-83155191214 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/3985 | |
| dc.source | Radioengineering | |
| dc.subject | Electronically-controlled | |
| dc.subject | High-frequency | |
| dc.subject | Log-domain filtering | |
| dc.subject | Low-voltage | |
| dc.subject | Quadrature oscillator | |
| dc.title | Log-domain current-mode quadrature sinusoidal oscillator | |
| dc.type | Article |