Near-field Beamformer Design for Circular MRI Antenna Arrays Based on MinMax Optimization

摘要：

In this paper, a convex-optimization based design method is proposed to solve the near-field beamformer design problem for improving the performance of an MRI system. The aim is to find the minimum number of antennas required for a uniform circular array which is capable of forming a beam with a pre-defined sidelobe attenuation level for an arbitrary focal point within a given circular scanning area. The minimax criterian (minimizing the maximum response at the sidelobe region) is employed in the design. Design examples bave shown that the proposed method can solve the problem successfully.

关键词： convex optimization near-field beam pattern circular MRI antenna array

作者: Yanping Liao Wei Liu

作者单位: School oflnformation and Communication Engineering Harbin Engineering University Harbin, China Commu Communication Research Group Department of Electronic and Electrical Engineering University of Sheff

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 325-328

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）