Title :
2×2 quasi-optical power combiner array at 20 GHz
Author :
Kawasaki, Shigeo ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
4/1/1993 12:00:00 AM
Abstract :
The design concept and the experimental results for a power combiner made of two strongly coupled FET oscillators use in a quasi-optical array are reported. To demonstrate the approach, a 2×2 planar array has been fabricated using a direct connection through a microstrip line. Taking the input impedance of the slot radiator into account, circuit the passive part of the array is investigated. The length of the microstrip feed lines are regulated to achieve the desired sum radiation pattern. At an operating frequency of 20 GHz, sum radiation patterns have been observed in both the H-plane and the E-plane
Keywords :
antenna radiation patterns; microstrip antennas; microwave antenna arrays; microwave integrated circuits; microwave oscillators; slot antennas; 2×2 planar array; 20 GHz; E-plane; H-plane; SHF; direct connection; feed lines; input impedance; microstrip line; quasi-optical power combiner array; quasioptical array; slot radiator; strongly coupled FET oscillators; sum radiation pattern; Circuits; Etching; FETs; Feeds; Impedance matching; Microstrip antenna arrays; Oscillators; Power combiners; Scattering parameters; Signal design;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
