Comparison of Design Methods for Binomial Matching Transformers
作者:
I. De Coster,
E. Van Lil,
A. Van de Capelle,
期刊:
Journal of Electromagnetic Waves and Applications
(Taylor Available online 2000)
卷期:
Volume 14,
issue 9
页码: 1229-1239
ISSN:0920-5071
年代: 2000
DOI:10.1163/156939300X01139
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The binomial transformer is a well known concept in impedance matching. By the use of multiple quarter wavelength sections broadband matching is achieved. Many textbooks handle the problem starting from the approximated theory of small reflections. In this paper, a new and exact derivation for the impedances of the different sections is given. It is shown that not the section coefficients must satisfy a binomial distribution (as commonly used), but a transformation of these coefficients. Furthermore, an alternative formulation starting form the theory of small reflections is given. The results of the different methods are compared. It is shown that the alternative formulation gives the best agreement with the exact method.
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