Title :
Analysis and Design of a Reconfigurable Multimode Low-Noise Amplifier Utilizing a Multitap Transformer
Author :
Xiaohua Yu ; Neihart, Nathan M.
Author_Institution :
Electr. & Comput. Eng. Dept., Iowa State Univ., Ames, IA, USA
Abstract :
This paper presents a reconfigurable multimode low-noise amplifier (LNA) capable of single-band, concurrent dual-band, and ultra-wideband operation. The multimode operation is realized by incorporating a switched multitap transformer into the input matching network of an inductively degenerated common source amplifier. The proposed LNA achieves single band matching at 2.8, 3.3, and 4.6 GHz; concurrent dual-band matching at 2.05 and 5.65 GHz; and ultra-wideband matching from 4.3 to 10.8 GHz. The power gain is 14.7-16.4 dB, noise figure is 1.9-4.7 dB, and third-order intermodulation intercept point is -2- + 0.4 dBm across all bands. The chip was fabricated in 0.13-μm CMOS, and occupies an area of 1.04 × 0.7 mm2, and has a power dissipation of 6.4 mW from a 1.2-V supply.
Keywords :
CMOS analogue integrated circuits; intermodulation; low noise amplifiers; microwave amplifiers; microwave integrated circuits; transformers; CMOS; LNA; concurrent dual-band matching; frequency 2.05 GHz; frequency 2.8 GHz; frequency 3.3 GHz; frequency 4.3 GHz to 10.8 GHz; gain 14.7 dB to 16.4 dB; inductively degenerated common source amplifier; input matching network; noise figure 1.9 dB to 4.7 dB; power 6.4 mW; reconfigurable multimode low-noise amplifier; single band matching; size 0.13 mum; switched multitap transformer; third-order intermodulation intercept point; ultrawideband matching; voltage 1.2 V; Couplings; Impedance matching; Inductors; Noise; Resonant frequency; Wideband; Windings; Dual band; impedance matching; low-noise amplifier (LNA); narrowband; software-defined radio (SDR); transformer; wideband;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2012.2237037
