A 0.7-V, 2.4-GHz low-power LNA combines a 1:3 front-end balun with dual-path noise and nonlinearity cancellation for the improved noise performance at low powers. In traditional noise cancellation techniques, only the noise of the main path is cancelled, while the noise of the auxiliary path is reduced by using higher power. In the proposed design, the noise and nonlinearity of both the main and the auxiliary paths are mutually cancelled allowing for low-power operation. The 2.8-dB noise figure, -10.7 dBm third-order input intercept point LNA in a Taiwan Semiconductor Manufacturing Company (TSMC)'s 65-nm GP process consumes 475 of power resulting in an figure of merit of 28.8 dB, which is 8.2 dB better than the state of the art.
Bibliographical noteFunding Information:
Manuscript received August 25, 2017; revised November 18, 2017; accepted December 12, 2017. Date of publication January 11, 2018; date of current version April 23, 2018. This paper was approved by Guest Editor Osama Shanaa. This work was supported by Semiconductor Research Corporation through the Texas Analog Center of Excellence, The University of Texas at Dallas under Grant 1836.98. (Corresponding author: Mustafijur Rahman.) M. Rahman is with Radio Circuit and Technologies Group, Intel Labs, Hillsboro, OR 97124 USA (e-mail: firstname.lastname@example.org).
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- low power
- noise cancellation
- ultra-low power receiver
- ultra-low-power radio
- wireless body area network (WBAN)