Title :
First-order model of symmetrical six-port microstrip ring coupler
Author :
Yeo, S.P. ; Lau, C.L.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
9/1/1991 12:00:00 AM
Abstract :
A brief description is given of how the simple eigenmode approach can be utilized to develop a first-order model that yields explicit ready-to-use formulas for predicting the performance characteristics of a symmetrical six-port microstrip ring coupler. Prototype tests conducted over the 2-5 GHz frequency range show the agreement between the predicted and measured values of the coupler´s scattering coefficients to be within ±0.05 for magnitude and ±10° for phase
Keywords :
S-matrix theory; strip line components; transmission line theory; waveguide couplers; 2 to 5 GHz; SHF; eigenmode; equivalent transmission line model; first-order model; microstrip ring coupler; performance characteristics; scattering coefficients; symmetrical six-port; Circuits; Frequency measurement; Microstrip; Phase measurement; Predictive models; Prototypes; Scattering; Testing; Transmission lines; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
