An inductorless LNA with active balun is proposed for multi-standard radio applications between 100MHz and 6GHz . It exploits a combination of a common-gate (CG) stage and an common-source (CS) stage with replica biasing to maximize balanced operation, while simultaneously canceling the noise and distortion of the CG-stage. In this way, a Noise Figure (NF) close to or below 3dB can be achieved, while good linearity is possible if the CS-stage is carefully optimized. Moreover, good output balancing can be achieved. The best performance is achieved between 300MHz to 3.5GHz with gain and phase errors below 0.3dB and ±2degrees, 15dB gain, S11<−14dB, IIP3 = 0dBm IIP2 higher than +20dBm at a total power consumption of 21mW. The circuit is fabricated in a baseline 65nm CMOS process, with an active area of only 0.01mm2. The circuit simultaneously achieves impedance matching, noise canceling, distortion canceling and a well balanced output.
|Title of host publication||Proceedings of the 18th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC|
|Place of Publication||Utrecht|
|Number of pages||5|
|Publication status||Published - 29 Nov 2007|
|Event||18th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2007 - Veldhoven, Netherlands|
Duration: 29 Nov 2007 → 30 Nov 2007
Conference number: 18
|Publisher||Technology Foundation STW|
|Conference||18th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2007|
|Period||29/11/07 → 30/11/07|
Blaakmeer, S. C., Klumperink, E. A. M., Leenaerts, D. M. W., & Nauta, B. (2007). Wideband CMOS low noise amplifier including an active balun. In Proceedings of the 18th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC (pp. -). Utrecht: STW.