Optimal Frequency Band Design Scheme of Dyadic Wavelet Processor Array Using Surface Acoustic Wave Devices

被引：14

作者：

Wen, Changbao ^{[1
]}

Zhu, Changchun ^{[2
]}

Ju, Yongfeng ^{[1
]}

Qiu, Yanzhang ^{[1
]}

Xu, Hongke ^{[1
]}

Lu, Wenke ^{[3
]}

机构：

[1] Changan Univ, Sch Elect & Control Engn, Xian 710064, Peoples R China

[2] Xi An Jiao Tong Univ, Inst Vacuum Microelect, Sch Elect & Informat Engn, Xian 710049, Peoples R China

[3] Donghua Univ, Sch Elect & Informat Engn, Shanghai 200051, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2009年 / 56卷 / 04期

关键词：

Frequency band; surface acoustic wave (SAW) device; wavelet; TRANSFORM; IMPLEMENTATION; SIGNALS;

D O I：

10.1109/TIE.2008.2006741

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, the relationship between the center frequency and radius of bandwidth and its effect on the frequency band characteristics of dyadic wavelet processor array using surface acoustic wave (SAW) devices are studied, and an optimal frequency band design scheme is proposed. For an arbitrary scale wavelet processor, we proposed that the center frequency is defined to three times of the radius of frequency bandwidth. The frequency band design scheme ensures that the frequency hand coverage factor is equal to 100% at -3 dB, which avoid the signal loss caused by the discrete frequency band and the device waste caused by the redundant frequency band. With the frequency band design scheme, an experiment of implementing a dyadic wavelet processor array using SAW devices with five scales is presented. Experimental results confirm that the frequency band coverage factor equals 100% at -3 dB without discrete and redundant frequency band.

引用

页码：949 / 955

页数：7