Title :
Broadband fully silicon integrated differential balun and LNA for space applications
Author :
Germain, Y. ; Lintignat, J. ; Jarry, B. ; Barelaud, B. ; Armengaud, V. ; Lapierre, L.
Author_Institution :
XLIM UMR 6172, Univ. de Limoges, Limoges, France
Abstract :
This paper presents the design of a fully integrated active balun directly cascaded with a LNA for broadband space telecommunication applications. The aim of the design is to provide an efficient conversion of the differential output signal of a Digital-to-Analog Converter (DAC) into a single-ended signal with low noise and gain electrical response. The circuit takes as a starting point the differential bipolar pair loaded by a PMOS current mirror. The integrated active balun circuit is designed using NXP Qubic 4X BiCMOS SiGe 0.25 μm process. The chip size is 1.37 mm2. Simulated performances show a maximum differential gain of 6 dB with an amplitude and phase errors less than 1.4 dB and 2.5° respectively over the frequency range from 700 MHz to 2.8 GHz. The power consumption is 81 mW under 2.7 V supply voltage.
Keywords :
BiCMOS digital integrated circuits; Ge-Si alloys; MOS integrated circuits; baluns; current mirrors; digital-analogue conversion; elemental semiconductors; low noise amplifiers; silicon; space communication links; DAC; LNA; NXP Qubic 4X BiCMOS silicon germanium; PMOS current mirror; amplitude error; broadband fully-silicon integrated differential balun; broadband space telecommunication application; differential bipolar pair; differential output signal conversion; digital-to-analog converter; frequency 700 MHz to 2.8 GHz; fully-integrated active balun design; gain 6 dB; gain electrical response; integrated active balun circuit; maximum differential gain; phase error; power 81 mW; power consumption; single-ended signal; size 0.25 mum; voltage 2.7 V; BiCMOS integrated circuits; Broadband communication; Gain; Impedance matching; Mirrors; Noise; Silicon germanium; Active circuits; BiCMOS integrated circuits; baluns; broadband amplifiers; differential amplifiers;
Conference_Titel :
Circuits and Systems (APCCAS), 2014 IEEE Asia Pacific Conference on
Conference_Location :
Ishigaki
DOI :
10.1109/APCCAS.2014.7032883
