A low-voltage high-linearity ultra-wideband down-conversion mixer in 0.18-μm CMOS technology

作者：Chen, Jun-Da^*

来源：MICROELECTRONICS JOURNAL, 2011, 42(1): 113-126.

DOI：10.1016/j.mejo.2010.08.019

• Gilber-cell mixers
• UWB
• MGTR
• IIP3

This paper presents a wideband mixer chip covering the frequency range from 3.4 to 6.8 GHz using TSMC 0.18 mu m CMOS technology. The linearity can be improved using multiple-gated-transistors (MGTR) topology. The measured 3-dB RF frequency bandwidth is from 3.1 to 6.8 GHz with an IF of 10 MHz. The measured results of the proposed mixer achieve 7.2-4.3 dB power conversion gain and 2-3 dBm input third-order intercept point (IIP3), and the total dc power consumption of this mixer including output buffers is 2.9 mW from a 1 V supply voltage. The current output buffer is about 2.17 mW, and the excellent LO-RF isolation achieved up to 54 dB at 5 GHz. The paper presents a mixer topology that is very suitable for low-power in ultra-wideband system applications.

• 出版日期2011-1