Title :
Optimization of aperture transitions for multiport microstrip circuits
Author :
Chen, Chinglung ; Tsai, Ming-Ju ; Alexopoulos, Nicolaos G.
Author_Institution :
Anritsu/Wiltron Company, Morgan Hill, CA, USA
fDate :
12/1/1996 12:00:00 AM
Abstract :
The introduction of the printed aperture into multiport microstrip circuits as a vertical transition proves to be practical in the design as well as the manufacturing process of multilayered circuits. With the mixed-potential integral equation-based moment method, it becomes possible to analyze and optimize the performance of this arbitrary shape aperture transition for multiport circuit applications. Bandwidth enhancement is obtained by changing the shape of the slot for two-port and three-port microstrip transitions. Also, the influence of slot size, orientation, and mutual coupling have been thoroughly studied in order to reach an optimal circuit performance. Using this transition, a three-port power divider with 180 degree phase difference and a directional coupler with various degrees of coupling have been designed
Keywords :
circuit optimisation; distributed parameter networks; integral equations; method of moments; microstrip circuits; microstrip directional couplers; microstrip lines; multiport networks; power dividers; two-port networks; aperture transitions optimisation; bandwidth enhancement; directional coupler; mixed-potential integral equation-based moment method; multilayered circuits; multiport microstrip circuits; mutual coupling; optimal circuit performance; printed aperture; slot orientation; slot size; three-port microstrip transitions; three-port power divider; two-port microstrip transitions; vertical transition; Apertures; Bandwidth; Circuits; Integral equations; Manufacturing processes; Microstrip; Moment methods; Optimization methods; Performance analysis; Shape;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
