A 1.0-7.0 GHz inductorless RF mixer with multiple feedback and active load in 40-nm CMOS

Xu Yan, Lu Yang, Hao Zhang, Jili Zhang, Fujiang Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a 1.0-7.0 GHz inductorless RF wideband active down-conversion mixer is presented. The mixer is a modified double-balanced Gilbert-type structure. The capacitive cross-coupling (CCC) and positive feedback topology are employed in the common-gate (CG) RF stage. Common-mode feedback (CMFB) is incorporated in the load stage. It acts as an active load to improve the linearity. For output matching and testing purposes, an intermediate frequency (IF) balun is also designed. A prototype of proposed mixer is implemented in standard SMIC 40-nm COMS technology. The core only occupies 0.02 mm2 without using any on-chip inductors. Postlayout simulation exhibits a conversion gain of 13.2 dB at the IF of 50 MHz. The gain variation is less than 2.0 dB from 1.0 to 7.0 GHz. The minimum SSB NF is 9.1 dB at 1.0 GHz. An input matching (S11) of less than -10.0 dB is achieved over entire RF band. The IIP3 is -10.9 dBm at 7.0 GHz. The total power consumption is 3.1 mW at 1.1 V DC power supply.

Original languageEnglish
Title of host publicationProceedings - 2017 IEEE 12th International Conference on ASIC, ASICON 2017
EditorsYajie Qin, Zhiliang Hong, Ting-Ao Tang
PublisherIEEE Computer Society
Pages187-190
Number of pages4
ISBN (Electronic)9781509066247
DOIs
StatePublished - 1 Jul 2017
Externally publishedYes
Event12th IEEE International Conference on Advanced Semiconductor Integrated Circuits, ASICON 2017 - Guiyang, China
Duration: 25 Oct 201728 Oct 2017

Publication series

NameProceedings of International Conference on ASIC
Volume2017-October
ISSN (Print)2162-7541
ISSN (Electronic)2162-755X

Conference

Conference12th IEEE International Conference on Advanced Semiconductor Integrated Circuits, ASICON 2017
Country/TerritoryChina
CityGuiyang
Period25/10/1728/10/17

Keywords

  • Active load
  • Inductorless
  • Mixer
  • Multiple feedback

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