NOVEL CURRENT-REUSE CURRENT MIRROR AND ITS APPLICATION ON 2.4-GHz DOWN-CONVERSION MIXER

摘要

In this article, a new CMOS low voltage low power high-linearity current-reuse current-mirror-switch (CR-CMS) mixer based on chartered 0.18-μm CMOS technology for 2.4-GHz IEEE 802.11b WLAN receiver applications is presented. The new CR-CMS technical is proposed and used in the mixer, which makes the mixer different from the traditional Gilbert mixer. Because of the new CR-CMS technique used in the mixer, the post-layout simulation results demonstrate that the CRCMS mixer can provide about 8.5-dB conversion gain with a local oscillator power of -5 dBm, while the power consumption is only 1.16 mW with a 1 V supply voltage, and the input-referred third-order intercept point of the mixer is 16.3482 dBm. The chip area including test pads is only 0.33 × 0.44 mm~2. Comparing with the previously reported CMOS mixers, the proposed CR-CMS mixer has the advantages of lower supply voltage, lower power consumption, higher linearity, and smaller chip area than most of the other reported work.