NDLI: SAW filters based on parallel-connected coupled resonator filters with offset frequencies

Please wait, while we are loading the content...

Year : 2016 Volume : 63

Year : 2015 Volume : 62

Year : 2014 Volume : 61

Year : 2013 Volume : 60

Year : 2012 Volume : 59

Year : 2011 Volume : 58

Year : 2010 Volume : 57

Year : 2009 Volume : 56

Year : 2008 Volume : 55

Year : 2007 Volume : 54

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control - Jan. 2007

IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society - Staff

IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society

Table of contents - Vol 54 No 1

Information for Contributors with Multimedia Addition

A multimedia example

Call for Papers - Special Issue on Diagnostic and Therapeutic Applications of Ultrasound in Bone - 31 May 2007

Piezoelectric thin films: evaluation of electrical and electromechanical characteristics for MEMS devices

On the 1/f frequency noise in ultra-stable quartz oscillators

Three-dimensional spatial and temporal temperature imaging in gel phantoms using backscattered ultrasound

The impact of aberration on high frame rate cardiac B-mode imaging

Implementation of the near-field signal redundancy phase-aberration correction algorithm on two-dimensional arrays

Modeling prostate anatomy from multiple view TRUS images for image-guided HIFU therapy

Estimating the blood velocity vector using aperture domain data

Novel transmit protection scheme for ultrasound systems

Micromachined thin film plate acoustic resonators utilizing the lowest order symmetric lamb wave mode

Numerical analysis of strongly nonlinear extensional vibrations in elastic rods

Effects of a parallel resistor on electrical characteristics of a piezoelectric transformer in open-circuit transient state

Inverse wave field extrapolation: a different NDI approach to imaging defects

A new elastic-wave-based imaging method for scanning the defects inside the structure

Model-based phase velocity and attenuation estimation in wideband ultrasonic measurement systems

Generation of narrowband antisymmetric lamb waves using a formed laser source in the ablative regime

Polymer coating behavior of Rayleigh-SAW resonators with gold electrode structure for gas sensor applications

SAW filters based on parallel-connected coupled resonator filters with offset frequencies

Modeling of nonlinear responses for reciprocal transducers involving polarization switching

An exact analysis of a rectangular plate piezoelectric generator

Thermal compensation in GaPO₄ beam resonators: experimental evidence for length extensional mode

Year : 2006 Volume : 53

Year : 2005 Volume : 52

Year : 2004 Volume : 51

Year : 2003 Volume : 50

Year : 2002 Volume : 49

Year : 2001 Volume : 48

Year : 2000 Volume : 47

Year : 1999 Volume : 46

Year : 1998 Volume : 45

Year : 1997 Volume : 44

Year : 1996 Volume : 43

Year : 1995 Volume : 42

Year : 1994 Volume : 41

Year : 1993 Volume : 40

Year : 1992 Volume : 39

Year : 1991 Volume : 38

Year : 1990 Volume : 37

Year : 1989 Volume : 36

Year : 1988 Volume : 35

Year : 1987 Volume : 34

Year : 1986 Volume : 33

SAW filters based on parallel-connected coupled resonator filters with offset frequencies

Content Provider	IEEE Xplore Digital Library
Author	Meltaus, J. Plessky, V.P. Harma, S. Salomaa, M.M.
Copyright Year	1986
Abstract	The concept of coupled resonators is applied to synthesize surface acoustic wave filters. Employing two parallel-connected filter tracks, with a frequency shift imposed between them, a wide passband with low insertion loss together with well-controlled rejections is achieved. The operation of the two-track device is based on the mutual interaction of the individual transfer functions for the pair of tracks. Each track serves to contribute a part of the passband, enabling a wide band. Outside of the pass-band, the signals passing through the two channels may cancel each other, thus facilitating efficient control over the rejections. However, obtaining rejection stopbands at just the predetermined frequencies requires precise values for the materials parameters and a reliable fabrication process. Prototype devices fabricated with this approach are demonstrated both on quartz and, for the first time, on 42deg-LiTaO₃. Results for two-track devices having either two or three transducers per track and operating either single-ended or with a balanced output are presented. The devices are designed employing the coupling-of-modes model and transmission-matrix approach, and the separate tracks are optimized simultaneously and independently. The center frequencies are 868 MHz and 1960 MHz. On quartz, a minimum insertion loss of 4 dB and a passband width of 0.23% are achieved at 868 MHz. On 42deg-LiTaO₃, the corresponding figures of merit are 1.3 dB for minimum insertion loss and 4.1% bandwidth at 1960 MHz. The filters on 42deg-LiTaO₃ also have remarkably flat passbands
File Size	1048908
File Format	PDF
ISSN	08853010
Volume Number	54
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	SAW filters Resonator filters Frequency Passband Insertion loss Surface acoustic wave devices Acoustic waves Transfer functions Wideband Materials reliability
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Instrumentation Electrical and Electronic Engineering

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in