Abstract
This article reviews the phantom zero compensation technique, applied on negative-feedback (NFB) amplifiers, followed by an analysis of the important efficiency parameter, 0, of the implemented phantom zero. The effect of the efficiency on the root locus is presented, and it has been found that δ 7 will give near ideal behavior of the applied phantom zero. A reduced small signal model of the amplifier is presented along with a modified feedback factor, β<sub>ph</sub>, which yields a simple analytical expression of the efficiency. The theory is independent of technology (BJT, FET, etc.), and exemplified on a two-stage BJT NFB amplifier. ©2004 IEEE.
| Original language | English |
|---|---|
| Title of host publication | [Host publication title missing] |
| Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
| Pages | 87-90 |
| ISBN (Print) | 0780385101 |
| DOIs | |
| Publication status | Published - 2004 |
| Event | 22nd Norchip Conference, 2004 - Oslo, Norway Duration: 2004 Nov 8 → 2004 Nov 9 |
Conference
| Conference | 22nd Norchip Conference, 2004 |
|---|---|
| Country/Territory | Norway |
| City | Oslo |
| Period | 2004/11/08 → 2004/11/09 |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering
Free keywords
- Phantom zero compensation
- Frequency compensation
- Negative-feedback amplifiers
- Feedback network