Title :
A CMOS low-noise amplifier for spectral sensing in cognitive radios
Author :
Ma, Xiaolong ; Chen, Guican ; Feng, Yan
Author_Institution :
Sch. of Electron. & Inf. Eng., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
In this paper, we present a new wideband low noise amplifier which operate in UHF band for spectral sensing in the receiver of cognitive radios. The circuit employs the noise-canceling technique, and can achieve the higher gain and lower power dissipation. The method of shunt-resistive feedback is adopted for achieving a broad bandwidth. The LNA is designed by the CMOS 0.18 um RF technology. Simulated results show that the gain is 18-21 dB, the noise figure is less than 4 dB, and the LNA consumes only 11.2 mW at 1.8 V power supply.
Keywords :
CMOS integrated circuits; cognitive radio; low noise amplifiers; radiofrequency integrated circuits; CMOS technology; LNA; cognitive radio; low-noise amplifier; noise canceling; noise figure; power 11.2 mW; shunt-resistive feedback; spectral sensing; voltage 1.8 V; Bandwidth; Broadband amplifiers; CMOS technology; Circuit noise; Circuit simulation; Cognitive radio; Feedback; Low-noise amplifiers; Power dissipation; Radio frequency;
Conference_Titel :
Microelectronics & Electronics, 2009. PrimeAsia 2009. Asia Pacific Conference on Postgraduate Research in
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4668-1
Electronic_ISBN :
978-1-4244-4669-8
DOI :
10.1109/PRIMEASIA.2009.5397454
