A dual band CMOS receiver with hybrid down conversion mixer for IEEE 802.11a/b/g/n WLAN applications

A low power dual band fully integrated receiver incorporating IEEE 802.11a/b/g/n WLAN standards was manufactured using 0.13μm CMOS technology. In this paper, the proposed hybrid mixer, which uses both double- and direct-conversion architecture, operates in the 5GHz band in order to eliminate the need for high LO frequency generators. This hybrid mixer is a small low power device that shares a 2.4GHz LNA inductor with the first 5G band mixer. The receiver is operated with a single-ended 1.2V supply demanding only 77mA at the 2.4GHz and 90mA at the 5GHz bands. The error vector magnitude is 3.4%/3.1% at the 2.4GHz/5GHz bands, respectively.