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Yamaji Takafumi
Department SOJO UNIVERSITY Department of Computer and Information Sciences, FACULTY OF COMPUTER AND INFORMATIONSCIENCES /(DC)Division of Applied Information Sciences, Graduate School of Engineering /Division of Applied Information Sciences, Graduate School of Engineering Position |
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| Language | Japanese |
| Publication Date | 2020/09 |
| Type | |
| Peer Review | Peer reviewed |
| Title | A study of Noise and Occupied Area of Poly-Phase Circuit |
| Contribution Type | |
| Journal | The IEICE Transaction on Fundamentals of Electronics, Communications and Computer Sciences |
| Journal Type | Japan |
| Publisher | The Institute of Electronics, Information and Communication Engineers |
| Volume, Issue, Page | pp.201-209 |
| Total page number | 9 |
| Author and coauthor | Takafumi Yamaji, Akio Shimizu |
| Details | Radio communication systems often use two analog signals as real and imaginary parts of a complex number; The two signals are usually called I and Q signals. The analog signal on an integrated circuit is usually a differential signal which is the voltage difference between positive and negative nodes. Therefore, a complex number is expressed using 4-node voltages. On the other hand, control systems for electrical motors often adopt balanced 3-phase system. Therefore, 3-phase is enough for two-dimension, amplitude and rotation controlling. In this paper, comparison between the different number of phase system is described. A larger number of phase system is required for harmonic-rejection mixers. The result is that the occupied areas on integrated circuit chips are independent of the phase number n if the required signal-to-noise power ratios are the same. |