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Notice of Violation of IEEE Publication Principles
"Design of Microwave Filters Using DSP Technique,"
by S. Shrivastava and D. Upadhyay,
in the Proceedings of the 2008 International Symposium on Communications and Information Technologies, ISCIT, Oct. 2008, pp.644-646
After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.
This paper contains significant portions of original text from the paper cited below. The original text was copied without attribution (including appropriate references to the original author(s) and/or paper title) and without permission.
Due to the nature of this violation, reasonable effort should be made to remove all past references to this paper, and future references should be made to the following article:
"Design of Microwave Filters With Arbitrary Frequency Response Based on Digital Methods,"
by I Arnedo, A. Lujambio, T. Lopetegi, M.A.G. Laso,
in the IEEE Microwave and Wireless Components Letters, vol.17, no.9, Sept. 2007, pp.634-636,
In this paper, a novel method for the design of microwave filters using digital signal processing technique with arbitrary frequency response is presented. It is mainly based on the conversion of the microwave specifications to the digital specification, where the digital filter design technique mainly IIRPNORM algorithm is applied. With the use of digital signal processing techniques, the method calculates the poles and zeros for the analog frequency response that satisfies the given specifications. By the poles and zeros, the microwave filter can be realized using conventional techniques. As an example to demonstrate the proposed technique, a filter with user-defined specifications over two independent passbands has been implemented and this would be tested in microstrip technology.