Title :
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
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;
Journal_Title :
Components, Packaging and Manufacturing Technology, IEEE Transactions on
DOI :
10.1109/TCPMT.2012.2207457
