Authors:Jian Tao andXiangning Fan
Affiliation:Southeast University, China
Keyword(s):Analog Baseband (ABB), Reconfigurable, Multi-mode Multi-standard, BiCMOS.
Abstract:This paper presents a reconfigurable analog baseband (ABB) for multi-mode multi-standard wirelessapplications. By having digitally controllable transconductance and transimpedance amplifier stages, thegain, noise figure (NF) and linearity of the analog baseband can be reconfigured. Fabricated in IBM 0.13μm BiCMOS process, the analog baseband achieves voltage gain from 4.4 to 33.3 dB. Simulated maximuminput 1-dB compression point and input intercept point (IIP3) are 1.2 dBm and 11.2 dBm respectively.Simulated minimum noise figure is 9.4 dB. The current consumption for a single branch (I or Q) rangesfrom 3.5 to 4.5 mA from 1.8 V supply voltage. The chip occupies an area of 0.2 mm2.