As micromachined vibratory gyroscopes push to lower noise floors, mode matching is necessary to moderate interface power dissipation. Mode matching increases sense displacements by the sense mode quality factor and thereby relaxes the precision requirements of the front-end, but also creates several difficulties as evidenced in a recent work [1]. Because it uses mode matching with open-loop sen...

This paper presents the implementation of a crossbar-based CIOQ switch with a novel matching algorithm that can be used for efficient interprocessor communication. The proposed matching algorithm, called SIM, uses a sequential mode to replace the traditional parallel mode to improve the efficiency of iterative matching operation. Moreover, the paper presents a FIFO-based request scheduler for t...

In this paper, a new voltage controlled first order all-pass filter is presented. The proposed circuit employs a single differential voltage dual-X second generation current conveyor (DV-DXCCII) and a grounded capacitor only. The proposed all-pass filter provides both inverting and non inverting voltage-mode outputs from the same configuration simultaneously without any matching condition. Non-...

The study compares three adaptive learning style scenarios, namely matching, compensating and monitoring. Matching and compensating scenarios operate on a design-time mode, while monitoring applies a run-time adaptation mode. In addition, the study investigates the role of pre-assessment and embedded adaptation controls. To measure the effectiveness of different adaptive scenarios, a software a...

A novel micromachined z-axis gyroscope with multidirectional drive-mode is presented. The design concept aims to relax mode-matching requirement, eliminate effects of directional residual stresses, and completely decouple the drive and sense modes. The proposed approach is based on de ning multiple drive-mode oscillators, distributed symmetrically around the center of a supporting frame. Quadra...

In this paper, we proposed an improved “bottom-up” variable-size block matching method. Different from previous work, the proposed method does not need any threshold during the matching, and we just keep all the motion vectors leading to the minimum matching error. A Marco-block mode prediction method is put forward to speed up the motion estimation procedure without introducing any loss to the...

We report on a novel high-sensitivity method to characterize and improve mode matching into optical cavities. This method is based on heterodyne detection of cylindrical transverse cavity modes. A specially designed annular-segmented photodiode is used to measure the amplitude of nonresonant modes reflected by the cavity. Our measurements allow us to optimize cavity mode matching to nearly 99.9...

A Hybrid technique for the analysis of pyramidal horn antennas is proposed in this paper. The transition from a relatively small feeding waveguide to a larger radiating aperture is analyzed using the mode matching technique, while the discontinuity between the horn and free space is analyzed using the method of auxiliary sources. The resulting procedure is very stable and accurate while the com...