Title :
Impulse generator InGaP/GaAs HBT MMIC with differential output port for impulse UWB system
Author :
Ishikawa, Ryo ; Honjo, Kazuhiko
Author_Institution :
Univ. of Electro-Commun., Chofu, Japan
Abstract :
An impulse generator InGaP/GaAs HBT MMIC with a differential output port has been developed for an impulse ultra-wideband (UWB) system. The MMIC directly provides impulse signals to UWB antennas in a differential mode through input digital signals. The impulse generated by the fabricated MMIC had a spectrum peak at 3.5 GHz. By changing the waveform of the input digital signal from a square wave to a short pulse with a width of 3 ns, the spectrum was expanded to a high frequency region by a second peak which appeared at 8.5 GHz. In addition, the detection circuit for the impulse signal was examined based on a peak hold circuit.
Keywords :
III-V semiconductors; MMIC; gallium arsenide; heterojunction bipolar transistors; indium compounds; peak detectors; pulse generators; ultra wideband antennas; ultra wideband communication; InGaP-GaAs; UWB antenna; differential output port; frequency 3.5 GHz; frequency 8.5 GHz; high frequency region; impulse UWB system; impulse generator InGaP/GaAs HBT MMIC; impulse signal detection circuit; peak hold circuit; short pulse signal; square wave; ultra-wideband system; Band pass filters; CMOS technology; Circuits; Gallium arsenide; Heterojunction bipolar transistors; MMICs; Microwave generation; Transceivers; Ultra wideband antennas; Ultra wideband technology;
Conference_Titel :
Microwave Integrated Circuits Conference, 2009. EuMIC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4749-7
