Title :
Spatial power combining for two-dimensional structures
Author :
Hicks, Chris W. ; Hwang, Huan-Sheng ; Steer, Michael B. ; Mink, James W. ; Harvey, James F.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
The two-dimensional (2-D) hybrid dielectric slab-beam open and closed waveguide systems are suitable for the design of planar quasi-optical integrated circuits and devices. An open system consisting of an active E-plane amplifier array consisting of Vivaldi-type antennas with MESFET and monolithic microwave integrated circuit (MMIC) devices was investigated. The 4×1 MESFET amplifier array generated 11 and 4.5 dB of amplifier and system gain, respectively, at 7.12 GHz, and the cascade MMTC Vivaldi-type antenna produced 24 dB of amplifier gain at 8.4 GHz. Also, experiments on a new 2-D H-plane parallel-plate closed system with a stripline slot antenna is introduced, and the wavebeam-mode theory is presented. The new system minimizes scattering and isolation losses associated with open structures. The amplifier gain of the closed system based on slot antennas is compared to the open system based on Vivaldi antennas
Keywords :
MESFET circuits; MMIC amplifiers; hybrid integrated circuits; microwave integrated circuits; power combiners; slot antennas; strip line components; waveguide theory; 2D H-plane parallel-plate closed system; 2D hybrid dielectric slab-beam waveguide systems; 4.5 to 24 dB; 7.12 GHz; 8.4 GHz; MESFET amplifier array; MMIC devices; Vivaldi-type antennas; active E-plane amplifier array; isolation losses; monolithic microwave integrated circuit; open waveguide system; planar quasi-optical ICs; scattering losses; spatial power combining; stripline slot antenna; two-dimensional structures; wavebeam-mode theory; Dielectric devices; Hybrid integrated circuits; MESFET integrated circuits; MMICs; Microwave amplifiers; Microwave antenna arrays; Open systems; Planar waveguides; Slot antennas; Two dimensional displays;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
