A 1.4 mW 900 MHz LNA with Noise-Canceling Technique in 130 nm CMOS Process

A noise-canceling low noise amplifier (LNA) structure is proposed in this paper. The LNA works in the 900 MHz ISM band. The techniques of noise canceling and current-reusing are proposed to improve the noise performance and reduce the power dissipation. The noise cancellation schema is realized by mutually canceling the noise currents of the common-source and common gate amplifiers. A prototype of the LNA is designed and fabricated in a standard 130 nm CMOS process. Measurement results under a 1.2 V supply voltage show that the proposed LNA achieves a voltage gain of 18 dB and a noise figure of 2 dB. The whole circuit only consumes a power dissipation of 1.4 mW.