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The application of photonic crystals to quasi-optic amplifiers

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4 Author(s)
Higgins, J.A. ; Rockwell Sci. Center, Thousand Oaks, CA, USA ; Moonil Kim ; Hacker, J.B. ; Sievenpiper, Dan

Quasi-optical spatial power combining provides the high combining efficiency required of solid-state power amplifiers for millimeter-wave frequencies. Photonic crystals (PXTs) are used to implement this type of power combining, as shown by two examples in this paper. The first example describes an all-dielectric structure that provides a carrier for the amplifier array chip satisfying the requirements concerning unilateral transmission and thermal management. The second example describes the use of a high impedance ground plane, based on PXTs, to make the power density incident on the array chip as uniform as possible in order to maximize power and efficiency

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:47 ,  Issue: 11 )