Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P1
Session:
Number:P1-110
A Fully Integrated MMIC chip set Employing InGaP/GaAs HBT for Application to Ku band Satellite Communication System
Young-Bae Park, Han-Nah Joh, Se-Ho Kim, Young Yun, Kyu-Ho Park, Kwang-Ho Ahn,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A highly integrated monolithic microwave integrated circuit (MMIC) chip set employing InGap/GaAs/GaAs heterojunction bipolar transistor (HBT) were developed for satellite communication applications. Concretely, using InGap/GaAs/GaAs HBT, downconverter MMIC and an active balun were developed. The downconverter MMIC showed a conversion gain of 9.5 dB and an LO suppression of -30 dBc. The fabricated chip, including a mixer, 2 stage IF amplifier, and LO rejection filter, exhibited a small size of 0.8×2.4 mm2. The size of the active balun was about 31.6 % of conventional passive branch-line coupler.