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Ultra-broadband lossy match amplifiers

By: Nakajima, M.; Ito, Y.; Asa, M.; Kimishima, M.;

1989 / IEEE


This item was taken from the IEEE Periodical ' Ultra-broadband lossy match amplifiers ' The authors describe the design, fabrication, and performance of a three-stage lossy match amplifier with a gain of 8.0+or-0.6 dB and a return loss of better than 9 dB over the 2- to 32-GHz band. By using a novel m-derived low-pass network with cutoff frequency of greater than square root 2 times as high as that of a conventional network, the ultrabroadband lossy match amplifier has achieved a high gain-bandwidth product. The advantage of this novel network is that the gain can be increased without lowering the bandwidth by increasing the interstage network impedance of the lossy match amplifier.<>