The following information was submitted:
Transactions: INTERNATIONAL JOURNAL of CIRCUITS, SYSTEMS and SIGNAL PROCESSING
Transactions ID Number: 19-907
Full Name: Josef Dobes
Position: Associate Professor
Age: ON
Sex: Male
Address: Czech Technical University in Prague, K13137, Technicka 2, 16627 Praha 6
Country: CZECH REPUBLIC
Tel: 224352207
Tel prefix: 420
Fax: 233339801
E-mail address: dobes@fel.cvut.cz
Other E-mails:
Title of the Paper: Precise Algorithms for Pole-Zero Analysis in Electronic Circuit Design
Authors as they appear in the Paper: Josef Dobes Dalibor Biolek Jan Michal David Cerny Libor Slama
Email addresses of all the authors: dobes@fel.cvut.cz,biolek@feec.vutbr.cz,michal@fel.cvut.cz,cernyd1@fel.cvut.cz,slamalib@fel.cvut.cz
Number of paper pages: 9
Abstract: The pole-zero analysis is generally known to be very sensitive to the numerical precision of the computer arithmetics. In the paper, various methods are suggested for solving that problem. First, an optimal pivoting strategy of the algorithm that reduces the general eigenvalue problem to the standard one is presented for both full- and sparse-matrix procedures. The algorithm increases the precision of the semisymbolic analysis, especially for the large-scale radio-frequency circuits. A novel technique is also incorporated recognizing multiple poles or zeros, which are often computed inaccurately by standard algorithms. A new type of this procedure called secondary root polishing is described in the paper. The accuracy is furthermore increased using longer numerical data. First, the long double precision is utilized. Further, a novel application of a suitable multiple-precision arithmetic library is suggested. Finally, using the longer numerical data to eliminate po!
ssible imprecision of the multiple eigenvalues is evaluated. The algorithm is demonstrated in both low- and high-frequency domains. In the low-frequency domain, necessity of using the longer numerical data is demonstrated by a power operational amplifier with poles and zeros located in both hertz and gigahertz ranges, which are often computed inaccurately by the standard algorithms. In the high-frequency domain, the algorithm is demonstrated by estimating the frequency of a distributed microwave oscillator, and by estimating the bandwidth of a distributed microwave amplifier.
Keywords: Eigenvalues and eigenfunctions, Poles and zeros, Resonant or large-scale electronic circuits, Sparse matrices, Variable-length arithmetic, Cascade filters, Transmission lines, Power amplifiers, Distributed microwave amplifiers, Distributed microwave oscillators
EXTENSION of the file: .pdf
Special (Invited) Session: New Methods for Improving the Pole-Zero Analysis Accuracy
Organizer of the Session: 202-201
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IP ADDRESS: 147.32.202.237
