Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15056
Title: Low noise amplifier design and noise cancellation for wireless hearing aids
Authors: ZHANG LIANG
Keywords: low noise amplifier, noise cancellation, wireless hearing aids
Issue Date: 13-Dec-2005
Source: ZHANG LIANG (2005-12-13). Low noise amplifier design and noise cancellation for wireless hearing aids. ScholarBank@NUS Repository.
Abstract: The low power low voltage low noise amplifier was designed and tested for wireless hearing aids with CMOS 0.35 A?m technology. The LNA is powered at 1.0 V supply and drains only 0.95 mA. The LNA provides a power gain of 11.91 dB with a noise figure of only 2.41 dB operating in the 0.9 GHz band. The IIP3 is 0.7 dBm and the P1dB is -12 dBm. Modified two-element beamforming method for noise cancellation was also discussed, which can reduce the surrounding environment noise. The verification of this method was implemented in EDA software with behavior model. The input SNR, variances of signal and noise, sampling frequency, the directional angle between signal and noise for construction model affect the noise cancellation performance. The noise cancellation method can be used in wireless hearing aid to get a better performance.
URI: http://scholarbank.nus.edu.sg/handle/10635/15056
Appears in Collections:Master's Theses (Open)

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