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2×2 quasi-optical power combiner array at 20 GHz

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2 Author(s)
Kawasaki, S. ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; Itoh, T.

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

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:41 ,  Issue: 4 )