A Low-Power CMOS Receiver for 5 GHz WLAN

作者：Homayoun Aliakbar^*; Razavi Behzad

来源：IEEE Journal of Solid-State Circuits, 2015, 50(3): 630-643.

DOI：10.1109/JSSC.2014.2386900

• Transformer
• zero-power
• 802.11a
• passive mixer
• analysis
• input impedance
• conversion gain
• noise figure
• harmonic balance
• noninvasive filter

Mobile devices demand low-power WiFi receivers for extended battery lifetime. This paper presents the design of an 11.6-mW receiver including baseband channel selection filtering that targets the IEEE802.11a standard. A 1-to-6 on-chip transformer serves as a low-noise amplifier with zero power dissipation and high linearity while providing ESD protection and differential outputs. The co-design of the transformer and the passive mixers leads to an efficient front end. Realized in 65-nm CMOS technology, the prototype exhibits a noise figure of 6 dB and a sensitivity of 66 dBm at a data rate of 54Mb/s from 5 GHz to 5.9 GHz. A new analysis of fully-differential current-driven passive mixers is also presented to facilitate the design of the front end.

• 出版日期2015-3