DocumentCode :
2376581
Title :
Consideration of Linearity in Cascode Low Noise Amplifiers using Double Derivative Superposition Method with a Tuned Inductor
Author :
Park, Chi-Wan ; Jeong, Jichai
Author_Institution :
Korea Univ., Seoul
fYear :
2007
fDate :
15-16 Nov. 2007
Firstpage :
21
Lastpage :
24
Abstract :
In this paper, we propose a highly linear low noise amplifier (LNA) using the double derivative superposition method with a tuned inductor. This topology has an auxiliary common gate stage of the cascode amplifier to cancel each third order intermodulation distortion (IMD3) component and can provide a high third order input intercept point (IIP3) for the 5.25 GHz frequency band. From the simulation results using the TSMC 0.18 mum RF CMOS process, the IIP3 in the proposed cascode LNAs can be improved by 9 dB, compared with the conventional derivative superposition method. The proposed low noise amplifier achieves an IIP3 of +15 dBm with a gain of 10.5 dB, a noise figure (NF) of 2.4 dB, and a power consumption of 6 mA at 1.5 V.
Keywords :
CMOS integrated circuits; MMIC amplifiers; cascade networks; inductors; intermodulation distortion; low noise amplifiers; TSMC RF CMOS process; cascode low noise amplifiers; current 6 mA; double derivative superposition; frequency 5.25 GHz; gain 10.5 dB; highly linear low noise amplifier; noise figure 2.4 dB; size 0.18 mum; third order intermodulation distortion cancellation; tuned inductor; voltage 1.5 V; CMOS process; Inductors; Intermodulation distortion; Linearity; Low-noise amplifiers; Noise cancellation; Noise figure; Radio frequency; Radiofrequency amplifiers; Topology; Derivative superposition (DS); field-effect transistor (FET); inter-modulation distortion (IMD); low noise amplifier (LNA); third order input intercept point (IIP3);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference, 2007. KJMW 2007. Korea-Japan
Conference_Location :
Okinawa
Print_ISBN :
978-1-4244-1556-4
Type :
conf
DOI :
10.1109/KJMW.2007.4402230
Filename :
4402230
Link To Document :
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