A wideband noise cancelling balun LNA employing current reuse technique

作者：Eskandari R; Ebrahimi A^*; Sobhi J

来源：MICROELECTRONICS JOURNAL, 2018, 76: 1-7.

DOI：10.1016/j.mejo.2018.04.006

• Current reuse
• Distortion cancelling
• Inductorless
• Low noise amplifier
• Low power
• Noise cancellation
• Wideband

A balun inductorless wideband low noise amplifier (LNA) with active loads is proposed for multi-standard radio applications. The noise cancelling and current reuse techniques are combined to mitigate the need for high power consumption in conventional balun LNAs. This adds a degree of freedom for transconductance of common gate stage (g(mCG)). As a result, lower g(mCG) without degrading the input matching, allows a large scaling factor for common source (CS) stage in noise cancelling technique. Post-layout simulation results of the proposed LNA circuit in a 180 nm RF CMOS process show voltage gain of 20.2 dB, -3 dB bandwidth from 600 MHz to 3.15 GHz. The minimum NF is 2.37 dB with input return loss (S-11) better than -13 dB in all frequency range and third input intercept point (IIP3) is -2.1 dBm. The circuit dissipates 6 mW from 1.5 V DC supply with an active area of 0.026 mm(2).

• 出版日期2018-6