Title :
A 1.8V 2.4GHz CMOS on-chip impedance matching low noise amplifier for WLAN applications
Author :
Chi, Baoyong ; Shi, Bingxue
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
A 1.8V, 2.4GHz CMOS on-chip impedance matching low noise amplifier for WLAN applications is presented. Its input and output are all matched to 50ohms without any off-chip components. The low noise amplifier could work in two modes: high gain and low gain, the gain could be controlled to get better signal-to-noise ratio performance. The amplifier has been implemented in 0.18μm CMOS process. The measured results show that the amplifier achieves 4.0dB noise figure, 12.0dB power gain, -13dBm input 1dB compression point and -2dBm third-order input intercept point, while drawing 7.94mA current from a 1.8V power supply (high gain mode) or -11.5dB power gain with almost no current consumption (low gain mode). The die area is only 0.97 × 0.88 mm2.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; impedance matching; wireless LAN; 0.18 micron; 1.8 V; 12.0 dB; 2.4 GHz; 4.0 dB; 7.94 mA; CMOS; WLAN applications; die area; high gain; input 1dB compression point; low gain; low noise amplifier; on-chip impedance matching; power gain; signal-to-noise ratio; third-order input intercept point; CMOS process; Current measurement; Gain measurement; Impedance matching; Low-noise amplifiers; Noise measurement; Performance gain; Power measurement; Signal to noise ratio; Wireless LAN;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205930
