Design of Planar Complex Impedance Transformers With the Modified Coupled Line

Author

Chen, Ming-Guang ; Hou, Teng-Bang ; Tang, Ching-Wen

Author_Institution

Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan

Volume

2

Issue

10

fYear

2012

Firstpage

1704

Lastpage

1710

Abstract

Complex impedance transformers with the modified coupled line are provided in this paper. With the modified coupled line as proposed, the electrical length of the impedance transformer would be smaller than a quarter wavelength. In addition, analytic equations for the design of complex impedance transformers are derived; optimal characteristic impedance and impedance transformation are also calculated for successful power transfer. Simulation and measurement have demonstrated transformation efficiency and the potential for application of the proposed structure to radio frequency and microwave circuits.

Keywords

coupled circuits; impedance convertors; microwave circuits; radiofrequency integrated circuits; analytic equation; electrical length; impedance transformation; microwave circuit; modified coupled line; optimal characteristic impedance; planar complex impedance transformer; power transfer; radio frequency circuit; transformation efficiency; Bandwidth; Dielectrics; Equations; Impedance; Manufacturing; Microstrip; Packaging; Complex impedance transformer; modified coupled line;

fLanguage

English

Journal_Title

Components, Packaging and Manufacturing Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-3950

Type

jour

DOI

10.1109/TCPMT.2012.2207457

Filename

6280648