A CMOS Full-Cycle Mixing Vector Modulator
Journal
IEEE Microwave and Wireless Components Letters
Journal Volume
26
Pages
217-227
Date Issued
2016
Author(s)
Abstract
This letter presents a new vector modulator architecture which makes full use of the baseband signals when performing signal mixing to enhance the already improved conversion gain of the mixers which use the local oscillator signals (LOs) of 25-percent duty cycle. The proposed technique can increases the signal conversion gain by 3 dB theoretically. The 2.4 GHz fully-integrated modulator is developed by using the commercial available 90-nm CMOS process and the chip size is 0.74 mm × 0.74 mm. The measured image rejection ratio and carrier feed-through are -52 dBc and -58 dBc, respectively. The CMOS vector modulator is measured passing the spectrum mask test of the IEEE 802.11b/g/n WLAN standards and achieves the EVMs of 3.8% for 802.11g and 2.6% for 802.11n.
SDGs
Type
journal article