Title :
A silicon MMIC active balun/buffer amplifier with high linearity and low residual phase noise
Author :
Lin, J. ; Zelley, C. ; Boric-Lubecke, O. ; Gould, P. ; Yan, R.
Author_Institution :
Lucent Technol. Bell Labs., Murray Hill, NJ, USA
Abstract :
This paper describes an integrated circuit functioning as both an active balun and a buffer amplifier. The circuit has a single-ended input and balanced output with phase and amplitude balance error less than 2/spl deg/ and 1.2 dB, respectively, measured from 1.5 GHz to 1.8 GHz at 5 V supply. When supply voltage drops down to 1.5 V, its phase and amplitude balance error remains within 5/spl deg/ and 2 dB, respectively. The circuit has high-linearity (P1 dB/sub in/=5 dBm, IIP3=16.6 dBm) and low residual phase noise (<-155 dBc/Hz@100 kHz and above) which make it suitable as an active balun/buffer amplifier between LO and balanced mixer for DCS 1800 base station receiver applications. The circuit was fully integrated on a 0.25 /spl mu/m BiCMOS process.
Keywords :
Baluns; BiCMOS analogue integrated circuits; Buffer circuits; Elemental semiconductors; Integrated circuit noise; MMIC amplifiers; Phase noise; Silicon; UHF amplifiers; UHF integrated circuits; 0.25 micron; 1.5 V; 1.5 to 1.8 GHz; BiCMOS process; DCS 1800 base station receiver applications; Si; Si MMIC active balun/buffer amplifier; active balun; balanced output; buffer amplifier; high linearity; integrated circuit; low residual phase noise; single-ended input; Distributed control; Impedance matching; Integrated circuit measurements; Linearity; Low-noise amplifiers; MMICs; Phase measurement; Phase noise; Silicon; Voltage;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.861756
