Title :
Analysis of planar grid oscillators
Author :
Bundy, S.C. ; Popovic, Z.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
A full-wave analysis of infinite periodic grid structures loaded with active devices is presented. The grid consists of arbitrary periodic metal patterns printed on one or both sides of a dielectric slab in free space. Since the structure is periodic, it is sufficient to analyze a single unit cell. An expression is derived relating the tangential electric field to the surface current density on the metal, which is determined by the method of moments. The driving point impedances are found for any active devices embedded in the grid structure. Using this analysis, the metal geometry can be optimized for designing active quasi-optical power-combining grids in the microwave and millimeter-wave regions.<>
Keywords :
current density; metallisation; microwave oscillators; numerical analysis; solid-state microwave circuits; waveguide components; active devices loaded type; dielectric slab; driving point impedances; full-wave analysis; infinite periodic grid structures; metal geometry optimisation; method of moments; microwave region; millimeter-wave region; moment method; periodic metal patterns; planar grid oscillators; quasi-optical power-combining grids; surface current density; tangential electric field; Current density; Design optimization; Dielectrics; Geometry; Microwave devices; Moment methods; Oscillators; Periodic structures; Slabs; Surface impedance;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335229
