Waveform design for charge pumps in energy harvesting systems
Abstract/Contents
- Abstract
- Wireless energy harvesting devices convert received AC energy into DC voltages suitable to power the back-end functionality of the devices. The low energy available to the devices require high AC-DC conversion efficiency in order for enough power to be delivered to the load. However, models to accurately predict charge pump performance, especially across waveform shape, for energy harvesting systems are limited. In this work, we will first present a model to characterize loss through charge pump cells in wireless energy harvesting devices. The proposed model includes the time-domain effects of the input radio-frequency (RF) energy wave and provides additional insight into how clock and switch parameters along with architecture considerations can be used to improve the efficiency of AC-DC conversion. We compare the performance between sine-wave and square-wave clocked charge pumps to show the trade-off between charge pump loss and clock generation power consumption. We will then show the benefits of using multi-tone waveforms and present a pathway to determining an arbitrary input waveform.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2018; ©2018 |
| Publication date | 2018; 2018 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Hsu, Stephanie | |
|---|---|---|
| Degree supervisor | Poon, Ada Shuk Yan | |
| Thesis advisor | Poon, Ada Shuk Yan | |
| Thesis advisor | Pauly, John (John M.) | |
| Thesis advisor | Wong, S. Simon | |
| Degree committee member | Pauly, John (John M.) | |
| Degree committee member | Wong, S. Simon | |
| Associated with | Stanford University, Department of Electrical Engineering. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Stephanie Hsu. |
|---|---|
| Note | Submitted to the Department of Electrical Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2018. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2018 by Stephanie Chung Hsu
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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