Title :
Dual FET active patch elements for spatial power combiners
Author :
Wu, Xiao Dong ; Chang, Kai
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
1/1/1995 12:00:00 AM
Abstract :
A novel dual-FET active patch antenna element and arrays for quasi-optical power combining are described. The circuit uses two FET´s that symmetrically load a split patch antenna. The configuration of the devices decreases H-plane cross-polarization dramatically. The power combining was achieved by injection locking through mutual coupling. An equivalent isotropic radiation power of 0.88 W for a 2-element dual-FET patch antenna array has been obtained. For a 2×2 array, an equivalent isotropic radiated power of 2.99 W was achieved. The circuit is planar and amenable to monolithic circuits
Keywords :
active antenna arrays; antenna radiation patterns; circuit feedback; field effect transistor circuits; microstrip antenna arrays; microwave integrated circuits; power combiners; 0.88 to 2.99 W; H-plane cross-polarization; active patch antenna arrays; dual FET active patch elements; equivalent isotropic radiation power; injection locking; monolithic circuits; mutual coupling; planar circuit; quasi-optical power combining; spatial power combiners; split patch antenna; Antenna arrays; Circuits; FETs; Injection-locked oscillators; Millimeter wave technology; Millimeter wave transistors; Mutual coupling; Patch antennas; Power combiners; Power generation;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
