New Approach for IIR Adaptive Lattice Filter Structure Using Simultaneous Perturbation Algorithm

2010 ◽  
Vol 130 (4) ◽  
pp. 422-429
Author(s):  
Jorge Ivan Medina Martinez ◽  
Kazushi Nakano ◽  
Kohji Higuchi
Keyword(s):  
New Approach ◽  
Lattice Filter ◽  
Filter Structure

Further improved 2-D lattice filter structure employing missing reflection coefficients

1995 ◽  
Vol 14 (4) ◽  
pp. 473-494 ◽  
Author(s):  
Ay?in Ert�z�n ◽  
Ahmet H. Kayran ◽  
Erdal Panayirci
Keyword(s):  
Reflection Coefficients ◽  
Lattice Filter ◽  
Filter Structure

An Improved Lattice Filter Structure with Minimum Roundoff Noise Gain

2016 ◽  
Vol 35 (11) ◽  
pp. 4170-4182
Author(s):  
Chao-Geng Huang ◽  
Hou-Qi Zhang ◽  
Hong Xu ◽  
Xiong-Xiong He ◽  
Jian Lin
Keyword(s):  
Roundoff Noise ◽  
Lattice Filter ◽  
Filter Structure

scholarly journals Simplified Modal-Cancellation Approach for Substrate-Integrated-Waveguide Narrow-Band Filter Design

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 962 ◽  
Author(s):  
Sebastian Celis ◽  
Mohamed Farhat ◽  
Abdullah S. Almansouri ◽  
Hakan Bagci ◽  
Khaled N. Salama
Keyword(s):  
Filter Design ◽  
Narrow Band ◽  
Substrate Integrated Waveguide ◽  
New Approach ◽  
Frequency Bands ◽  
Order Filter ◽  
Filter Structure ◽  
Band Filter ◽  
Narrow Band Filter ◽  
Periodic Number

Current substrate-integrated-waveguide (SIW) filter design methodologies can be extremely computational and time-inefficient when a narrow-band filter is required. A new approach to designing compact, highly selective narrow-band filters based on smartly positioned obstacles is thus presented here. The proposed modal-cancellation approach is achieved by translating or eliminating undesired modes within the frequency of interest. This is performed by introducing smartly located obstacles in the maxima and nulls of the modes of interest. This approach is different from the traditional inverter technique, where a periodic number of inductive irises are coupled in a ladder configuration to implement the desired response of an nth-order filter, and significantly reduces the complexity of the resulting filter structure. Indeed, the proposed method may be used to design different filters for several frequency bands and various applications. The methodology was experimentally verified through fabricated prototypes.

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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