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A dual‐band Chebyshev impedance transformer
Author(s) -
Castaldi G.,
Fiumara V.,
Pinto I. M.
Publication year - 2003
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.11151
Subject(s) - chebyshev filter , transformer , chebyshev polynomials , chebyshev equation , electronic engineering , mathematics , microwave , chebyshev nodes , electrical engineering , engineering , mathematical analysis , telecommunications , voltage , orthogonal polynomials , classical orthogonal polynomials
This paper presents a simple extension of the Chebyshev quarter‐wave multisection transformer synthesis to dual‐band operation. The method is a variation of the classical Chebyshev transformer design procedure, using a suitable 2 nd ‐order trigonometric polynomial as the argument of the Chebyshev polynomial. As compared to a single‐band Chebyshev transformer encompassing both required passbands, the proposed design yields significantly better performance. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 141–145, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11151