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- Title
An inductorless active mixer using stacked nMOS/ pMOS configuration and LO shaping technique.
- Authors
Guo, Benqing; Chen, Jun; Wang, Xuebing; Chen, Hongpeng
- Abstract
In this paper, a CMOS active down-conversion mixer is presented for wideband applications. Specifically, a LO generation chain is suggested to convert AC LO signal to shaped trapezoid burst, which reduces the sinusoidal LO power level requirement by the mixer. The current-reuse technique by stacked nMOS/ pMOS architecture is used to save the power consumption of the circuit. Moreover, this complementary configuration is also employed to compensate second-order nonlinearity of the circuit. Implemented in a 0.18-m CMOS process, post-simulations show that, driven by only −10 dBm sinusoidal LO signal, the proposed inductorless mixer provides a maximal conversion gain of 15.7 dB and a noise figure (NF) of 9.1-12 dB across RF input frequency range 0.5-1.6 GHz. The IIP3 and IP1dB of 3.5 dBm and −4.8 dBm are obtained, respectively. The mixer core only consumes 3.6 mW from a 1.8-V supply.
- Subjects
COMPLEMENTARY metal oxide semiconductors; TRAPEZOIDS; COMPUTER simulation; NONLINEAR systems; SIGNAL processing
- Publication
Modern Physics Letters B, 2018, Vol 32, Issue 11, p-1
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S0217984918501294