A 2.4 GHz 2.2 mW current reusing passive mixer with gm-boosted common-gate TIA in 180 nm CMOS

被引：4
|
作者：
Chen, Chao [1 ]
Cai, Zhikuang [2 ]
机构：
[1] Southeast Univ, Natl ASIC Syst Engn Res Ctr, Nanjing 210096, Jiangsu, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Jiangsu, Peoples R China
来源：
IEICE ELECTRONICS EXPRESS | 2019年 / 16卷 / 02期
基金：
中国国家自然科学基金;
关键词：
passive mixer; trans-impedance amplifier; front-end; RF circuit; low power; RECEIVER;
D O I：
10.1587/elex.16.20181032
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a 2.4 GHz I&Q passive mixer with 36 dB conversion gain and low biasing current of 1.2 mA. A pre-amplifier sharing biasing current of the trans-conductance stage is used to improve conversion gain and noise performance without dissipating extra power. A gm-boosted common gate structure is proposed as the trans-impedance amplifier (TIA), which consumes less power than an OTA based TIA in traditional passive mixers. A prototype of the proposed mixer is designed and fabricated in SMIC 180 nm CMOS process. The 36 dB conversion gain, -11 dBm IIP3 and 12 dB NF are achieved in measurements.
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页数：7
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