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A Low Distortion and High Power Efficiency Self-Oscillating Switching Power Amplifier

The design of a low distortion and high efficiency self-oscillating power amplifier is presented. It is designed using TSMC 0.35µm, 2p4m CMOS technology. We use noise shaping to reduce the THD (Total Harmonic Distortion). This design can be applied to hearing aids. The supply voltage is 1.5V for hearing aids.
Experimental results demonstrate that the proposed amplifier has the total harmonic distortion (THD) of 0.0751% and power efficiency around 90.1%. Measurement result reveals that this circuit can be up to 0.25% of the THD and 89.7% of the power efficiency. This result shows that the proposed power amplifier has superior performance in THD and power efficiency, and this circuit is applicable to low-distortion, high-efficiency, and low-voltage applications, such as the hearing aids.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0714105-164338
Date14 July 2005
CreatorsChou, Ming-ching
ContributorsYao-Tsung Tsai, Shiang-Hwua Yu, Jyi-Tsong Lin, Chia-Hsiung Kao
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0714105-164338
Rightsnot_available, Copyright information available at source archive

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