Title :
A Remedy for Numerical Difficulty Associated with Virtual Auxiliary Terminations
Author :
Chen, Chih-Jung ; Chu, Tah-Hsiung
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei
Abstract :
The concept of virtual auxiliary termination presented in 2006 APMC is further verified by an experiment of a three-port circulator to illustrate the remedy on solving its three-port scattering parameters from two-port measurements. In the results of first step, the reconstructed scattering parameters show apparent inaccuracy at certain frequency points. An indicator of accuracy is then studied. For those frequency points suffering from numerical difficulty, a remedy is formulated using Newton´s method. The final results show good agreement with those of the benchmark.
Keywords :
Newton method; S-parameters; microwave circulators; multiport networks; Newton method; numerical difficulty; three-port circulator; three-port scattering parameter; virtual auxiliary termination; Bandwidth; Benchmark testing; Degradation; Frequency measurement; Microwave communication; Microwave measurements; Newton method; Performance evaluation; Reflection; Scattering parameters;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554953
