A BROADBAND HIGH LINEARITY CURRENT-REUSE BULK-CONTROLLED MIXER FOR 4G APPLICATIONS | Zendy

Hung-Che Wei | Zendy; Chih-Lung Hsiao | Zendy; RoMin Weng | Zendy

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A BROADBAND HIGH LINEARITY CURRENT-REUSE BULK-CONTROLLED MIXER FOR 4G APPLICATIONS

Author(s) -

Hung-Che Wei,

Chih-Lung Hsiao,

RoMin Weng

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier13020702

Subject(s) - linearity , broadband , reuse , current (fluid) , computer science , electronic engineering , electrical engineering , materials science , telecommunications , engineering , waste management

A high linearity down-conversion mixer for the application of the fourth generation (4G) mobile communication systems is presented. The presented 2.3 to 5.8GHz broadband mixer adopts current-reused and bulk-controlled techniques. The linearized transconductor stage is composed of the CMOS ampliflers and the bulk-controlled compensation (BCC) transistors. The bulk-controlled voltage is applied to adjust the threshold voltage of the BCC transistor. Thus, the equivalent third-order intermodulation (IM3) term of the CMOS ampliflers and the BCC transistors can be mitigated so as to improve the linearity. Furthermore, the current-reused architecture enhances the conversion gain of the proposed mixer and compensates the loss caused by the shunt feedback matching network. The presented mixer consumes 4.8mA from a 1.5V power supply. The measurement results of the mixer exhibit the maximum power conversion gain of 11.3dB. The input third-order intercept point (IIP3) of 4.7dBm over the entire 2.3{5.8GHz band is observed.

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