An 18.9-dB Dynamic-Range Rectifier Based on Time-Domain Modeling and Quality Factor
| Autor: | Chulhun Seo, Ngoc Duc Au |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Power transmission
Materials science business.industry Dynamic range dBm Electrical engineering Schottky diode 020206 networking & telecommunications 02 engineering and technology Input impedance Condensed Matter Physics Inductor 0202 electrical engineering electronic engineering information engineering Waveform Time domain Electrical and Electronic Engineering business |
| Zdroj: | IEEE Microwave and Wireless Components Letters. 29:623-625 |
| ISSN: | 1558-1764 1531-1309 |
| DOI: | 10.1109/lmwc.2019.2932448 |
| Popis: | This letter presents a design of 433-MHz rectifier for wireless power transmission (WPT) in medical implant devices (MIDs). By modeling microwave Schottky diode in the time domain, the dc voltage and the optimal input impedance can be obtained at the high input power range when the current waveform at each input power was determined and implemented. At the input terminal, a pair of shunt capacitors were connected with the series and shunt inductors to improve the quality ( $Q$ ) factor of matching network, which enhanced the rectifier efficiency in the wide input power range. By using lump elements in matching network, the 1.1 cm $\times0.4$ cm compact-size rectifier had the measured efficiency above 50.1% where the input power from −6.8 dBm (0.209 mW) to 12.1 dBm (16.22 mW) and thus, the dynamic range of 18.9 dB achieved. The peak efficiency was 64.4% at 5 dBm (3.16 mW). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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