Title :
Efficient FDTD analysis of conductor-backed CPWs with reduced leakage loss
Author :
Hotta, Masashi ; Qian, Yongxi ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Japan
fDate :
8/1/1999 12:00:00 AM
Abstract :
Leakage loss of the conductor-backed coplanar waveguide (CBCPW) is analyzed by using a novel hybrid two-dimensional finite-difference time-domain/Marquardt curve fitting technique. The validity and high accuracy of the method is confirmed by comparison with other experimental and theoretical results. A modified CBCPW structure with a substrate groove in the backside is proposed, which shows over eight times smaller leakage loss than a normal CBCPW
Keywords :
coplanar waveguides; curve fitting; finite difference time-domain analysis; magnetic leakage; microwave integrated circuits; 2D FDTD analysis; CBCPW structure; Marquardt curve fitting technique; conductor-backed CPWs; leakage loss; substrate groove; Algorithm design and analysis; Coplanar waveguides; Curve fitting; Finite difference methods; MMICs; Microwave devices; Microwave integrated circuits; Monolithic integrated circuits; Propagation losses; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
