A new traveling wave matching structure for enhancing the bandwidth of MMIC broadband amplifiers

Three artificial transmission line sections followed by an input emitter follower buffer are used for constructing a new traveling wave matching structure to enhance the bandwidth of broadband amplifiers. An InGaP HBT MMIC broadband amplifier with 20-mW dc power consumption and a flat gain of 7.5dB over a frequency range from 30kHz to 23GHz is demonstrated.