Title :
An input-impedance-based circuit model for coplanar waveguide-to-slotline T-junction
Author :
Wang, Chi-Hsueh ; Lin, Yo-Shen ; Tsai, Mun-Chuan ; Chang, Chun-Huai ; Chen, Chun Hsiung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
6/1/2004 12:00:00 AM
Abstract :
In this paper, an analytical input impedance formula is presented to characterize the coplanar waveguide (CPW)-to-slotline T-junction. Based on this impedance formula, one may establish a new circuit model for the T-junction, which may describe both the discontinuity effect and the mode conversion effect between even and odd CPW modes. This circuit model is validated by measurement and is then applied to design the back-to-back CPW-to-slotline and CPW-to-coplanar stripline transition structures.
Keywords :
coplanar transmission lines; coplanar waveguides; electric impedance; slot lines; strip line discontinuities; strip line transitions; strip lines; waveguide junctions; waveguide theory; analytical input impedance formula; circuit model; coplanar stripline transition structures; coplanar waveguide to slotline T junction; discontinuity effect; input impedance based circuit model; mode conversion effect; Circuit simulation; Computational modeling; Coplanar waveguides; Equivalent circuits; Impedance; Microwave circuits; Probes; Slotline; Stripline; Strips; CPW; Coplanar stripline; T-junction; coplanar waveguide; equivalent circuit; slotline;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2004.828446
