Waveguide transmission line parameter analysis based on the FDTD method. (21st September 2020)

• Record Type: Journal Article
• Authors: Jiang, Zhaoneng; Ji, Fangzheng; Huang, Shichun; Xuan, Xiaofeng; Wang, Zhixin
• Is Part Of: International journal of numerical modelling. Volume 34:Number 1(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-09-21
• Subjects: double‐ridge waveguide -- finite‐difference time‐domain method -- parameter analysis -- singular value decomposition -- substrate integrated waveguide; Electric networks -- Mathematical models -- Periodicals; Electronics -- Mathematical models -- Periodicals; 621.3011
• DOI: 10.1002/jnm.2815
• Languages: English
• ISSNs: 0894-3370

Abstract

Abstract: In order to quickly analyze discontinuity or periodic structure transmission characteristics, the combination of finite‐difference time‐domain method and singular value decomposition is applied. A double‐ridge waveguide (WRD) and its improvement are studied. According to the simulation results about propagation constant and eigen‐functions, the transmission performance of WRD can be improved by adding fillets and enlarging the radius of fillets or filling dielectric material. Guided wave and mode characteristics of substrate integrated waveguide (SIW) are also researched in detail. Simulation carried out for different periodic SIW structures shows that due to the periodic gap, electromagnetic energy leakage is present in the metallized via waveguide wall of the SIW. It is significant for the future improvement and application of SIW structure.