A linear current-reused LNA for 3.1-10.6GHz UWB receivers

[摘要] References(5)Cited-By(4)An ultra-wide-band CMOS low-noise amplifier (LNA) employing a common-gate (CG) stage for wideband input matching is presented. This LNA utilizes the concurrent noise and distortion canceling techniques. Moreover, the current-reused technique exploiting the passive network instead of using the active and power consuming element is introduced to preserve the power consumption while contributing to the noise canceling trend. In other words, this topology is capable of canceling the noise effect of input transistor without consuming much current. Simulation results based on a 0.13µm standard RFCMOS technology shows that a power gain of 13.5dB and the noise figure of 2.7-4.2dB over the -3-dB bandwidth of 2.6-10.7GHz. With the presence of a weak inversion biased transistor, an input third-order intercept point (IIP3) of +5dBm is achieved. The power consumption is 13.5mW from a single 1.2V power supply.

[学科分类] 电子、光学、磁材料

[关键词] UWB LNA;current-reuse;noise and distortion canceling