Quasi-optical Travelning Wave Amplifiers
نویسندگان
چکیده
Previously reported quasi-optical amplifier arrays have limited bandwidth and suffer from poor input/output isolation. These prsbllems can be solved by using traveling wave antennas and distributed amplifier techniques. FII'TD simulations of a linearly tapered slot array topology demonstrate very broadband quasioptical transitions are feasible with small unitcell aperture. Experiments using a singleelement low frequency prototype exhibit a 50% fractional bandwidth at 3.5GHz using Vivaldi-type slots and a hybrid microstrip MESFET TWA circuit.
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