Title :
Switching Power Amplifier With Feedback For Improving Total Harmonic Distortion
Author :
Kao, C.H. ; Lin, W.P. ; Chuang, Y.J.
Author_Institution :
Nat. Sun Yat-Sen Univ., Kaohsiung
Abstract :
A low distortion and high efficiency switching power amplifier is proposed. This circuit is designed for micropower low voltage hearing instruments. We use feedback to reduce the total harmonic distortion (THD) and the DC output bias current. The experimental results show that the proposed circuit has 0.24% total harmonic distortion and 91% power efficiency while the d.c. output bias current is 12 muA at 1.5V supply voltage
Keywords :
circuit feedback; harmonic distortion; harmonics suppression; hearing aids; low-power electronics; power amplifiers; 1.5 V; 12 muA; 91 percent; hearing instruments; switching power amplifier; total harmonic distortion; Auditory system; Circuits; Feedback; High power amplifiers; Instruments; Power amplifiers; Pulse amplifiers; Pulse width modulation; Total harmonic distortion; Voltage;
Conference_Titel :
Mixed Design of Integrated Circuits and System, 2006. MIXDES 2006. Proceedings of the International Conference
Conference_Location :
Gdynia
Print_ISBN :
83-922632-2-7
DOI :
10.1109/MIXDES.2006.1706606
