By Topic

A unified approach to the design of 2-D IIR digital filters with flat passband magnitude and delay characteristics

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Hegde, R. ; Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA ; Shenoi, B.A.

In this paper we present a unified procedure to the design of 2-D IIR filters with flat passband characteristics in both magnitude and delay. We first propose an analytical procedure to design maximally flat delay 1-D IIR filters with flat passband and flat/equiripple stopband magnitude characteristics. We then present a Digital Spectral Transformation (DST) to obtain stable 2-D IIR transfer functions by transforming a stable 1-D prototype. The few parameters of the DST are found using a simple optimization technique such that the 3-dB bandwidth of the 1-D prototype maps to the desired contour in the ω1 2 plane. In this unified method no computationally expensive non-linear optimization techniques are employed, the 2-D filter is guaranteed to be stable, the error between the specified passband contour and the actual passband contour is very small and the flat passband characteristics in both magnitude and delay response of the 1-D prototype filter is well preserved by the 2-D filter

Published in:

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on  (Volume:1 )

Date of Conference:

9-12 Jun 1997