Title :
A linearization technique for RF receiver front-end using second-order-intermodulation injection
Author :
Lou, Shuzuo ; Luong, Howard C.
Author_Institution :
Hong Kong Univ. of Sci. & Technol., Hong Kong
Abstract :
A linearization technique is proposed in which low-frequency 2nd-order intermodulation IM2 is injected to suppress the 3rd-order intermodulation IM3. The proposed linearization technique is applied to both an LNA and a down-conversion mixer in an RF receiver front-end (RFE) working at 900-MHz. Fabricated in a 0.18-mum CMOS process and operated at 1.5 V supply, the RFE delivers 22-dB gain with 5.3-dB noise figure (NF). The linearization technique measures around 20-dB IM3 suppression without gain reduction and noise penality, and with only extra current of 0.2 mA.
Keywords :
CMOS integrated circuits; UHF amplifiers; intermodulation; linearisation techniques; low noise amplifiers; radio receivers; 2nd-order intermodulation; CMOS process; LNA; RF receiver front-end linearization; down-conversion mixer; frequency 900 MHz; gain 22 dB; low noise amplifier; low-frequency intermodulation; noise figure 5.3 dB; second-order-intermodulation injection; size 0.18 mum; voltage 1.5 V; Circuits; Energy consumption; Linearization techniques; Noise figure; Noise measurement; Noise reduction; RF signals; Radio frequency; Signal generators; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2007. ASSCC '07. IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4244-1359-1
Electronic_ISBN :
978-1-4244-1360-7
DOI :
10.1109/ASSCC.2007.4425738
