Dual track architecture and time synchronous scheme for wavelet reconstruction processor using SAW device based on MSC

被引：22

作者：

Wen, Changbao ^{[1
,2
]}

Zhu, Changchun ^{[2
]}

Ju, Yongfeng ^{[1
]}

Qiu, Yanzhang ^{[1
]}

Xu, Hongke ^{[1
]}

Lu, Wenke ^{[3
]}

Hu, Xiaodong ^{[2
]}

Wu, Yuan ^{[2
]}

Liu, Junhua ^{[2
]}

机构：

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

[2] Xian Jiaotong Univ, Sch Elect & Informat Engn, Inst Vacuum Microelect, Xian 710049, Peoples R China

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

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2008年 / 147卷 / 01期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

surface acoustic wave (SAW) device; wavelet reconstruction; dual track; delay time;

D O I：

10.1016/j.sna.2008.05.008

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we propose dual track architecture and time synchronous scheme for wavelet reconstruction processor using surface acoustic wave (SAW) device based on multistripe coupler(MSC). An arbitrary scale wavelet reconstruction processor with dual track architecture consists of a wavelet interdigital transducer (IDT) apodized by the envelope of wavelet function, two MSCs, and two reconstruction wavelet IDTs apodized by the envelope of identical reconstruction wavelet function. The SAW launched by wavelet IDT is bidirectional. Two reconstruction wavelet IDTs with identical design parameter are symmetrically deposited on the dual track of wavelet reconstruction processor. Therefore, the performances of wavelet reconstruction processor were improved due to bidirectional SAW received by two reconstruction wavelet IDTs. Furthermore, the delay time characteristic of SAW propagating on crystals substrate surface was skillfully applied to compensate the time asynchronous problem among wavelet reconstruction processor. This means ensures that all scale processors in wavelet reconstruction processor have identical response time. An experiment of wavelet reconstruction processor with dual track architecture and time synchronous scheme was presented. Experimental results confirm that the performances of wavelet reconstruction processor are improved, and time synchronous is realized in this wavelet reconstruction processor with three scales. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：222 / 228

页数：7

共 17 条

[1] Ultrasonic data compression via parameter estimation [J].

Cardoso, G ;

Saniie, J .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2005, 52 (02) :313-325

[2]

Chang SJ, 1997, IEEE T CONSUM ELECTR, V43, P623, DOI 10.1109/30.628685

[3] The time-frequency analysis approach of electric noise based on the wavelet transform [J].

Dai, YS .

SOLID-STATE ELECTRONICS, 2000, 44 (12) :2147-2153

[4] THE WAVELET TRANSFORM, TIME-FREQUENCY LOCALIZATION AND SIGNAL ANALYSIS [J].

DAUBECHIES, I .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1990, 36 (05) :961-1005

[5] Fast discrete wavelet transform for B-H loop tracing [J].

Hristoforou, E ;

Chiriac, H ;

Nagacevschi, V .

SENSORS AND ACTUATORS A-PHYSICAL, 1999, 76 (1-3) :442-447

[6] CHARACTERIZATION OF SIGNALS FROM MULTISCALE EDGES [J].

MALLAT, S ;

ZHONG, S .

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 1992, 14 (07) :710-732

[7] NOVEL ACOUSTIC-SURFACE-WAVE DIRECTIONAL COUPLER WITH DIVERSE APPLICATIONS [J].

MARSHALL, FG ;

PAIGE, EGS .

ELECTRONICS LETTERS, 1971, 7 (16) :460-&

[8] Synthesis of optical wavelet filters [J].

Moreolo, MS ;

Cincotti, G ;

Neri, A .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2004, 16 (07) :1679-1681

[9]

OLINER AA, 1978, ACOUSTIC SURFACE WAV, P68

[10]

RIEDER P, 1999, SIGNAL IMAGE VIDEO T, V21, P77

← 1 2 →