Complementary Filter Performance Enhancement through Filter Gain

Abstract: Performance Enhancement of Clutter Filtering via Filter Bank Approach

In this paper, a novel filter bank approach is presented in order to improve clutter filtering performance in ultrasound color flow imaging. In ultrasound imaging, clutter signals are characterized as the ones with low frequencies and large energies, which is quite qualitative but not quantitative. So, it is not easy to design a fixed optimal filter to handle general situations. In this paper, ...

Kalman Filter in Speech Enhancement

Gain-Scheduled Complementary Filter Design for a MEMS Based Attitude and Heading Reference System

This paper describes a robust and simple algorithm for an attitude and heading reference system (AHRS) based on low-cost MEMS inertial and magnetic sensors. The proposed approach relies on a gain-scheduled complementary filter, augmented by an acceleration-based switching architecture to yield robust performance, even when the vehicle is subject to strong accelerations. Experimental results are...

Broadband Amplifier Gain Slope Equalization Filter

Since the achievable gain of transistors typically falls off as the frequency increases, an equalization filter with positive gain slope is necessary to compensate for the gain roll-off of broadband amplifiers. This paper proposed an novel equalizer structure and design a equalization filter by applying this novel structure and a modified SIW-PBG (Substrate Intergrated Waveguide-Photon BandGap)...

Gain normalization of lifted filter banks

The DC and Nyquist responses of the filters in a two-channel perfect reconstruction filter bank are expressed in terms of the lifting filters in a lifting decomposition. The computation makes use of the cascade-form representation of lifting steps as lowerand upper-triangular factor matrices in the polyphase-with-advance representation. A functional relationship is derived connecting the DC and...