A 5 to 10.5 GHz Low-power Wideband I/Q Transmitter with Integrated Current-Mode Logic Frequency Divider

Hwann Kaeo Chiou, Wei Min Sung

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

2 Scopus citations

Abstract

This paper presents a 5-10.5 GHz wideband fully-integrated I/Q transmitter in tsmc 90-nm CMOS technology. A current-mode passive mixer was adopted to enhance the linearity and low-power performance. The transmitter also integrated current-mode logic (CML) frequency divider (FD) to generate I/Q signals at LO-port. The I/Q signals were directly combined by using high-Q top-metal lines. An inductively coupled resonator (ICR) wideband output matching network was used to transform balance to unbalance output signal in RF drive-amplifier. The proposed transmitter achieves a 3-dB bandwidth from 5 to 10.5 GHz, a conversion gain of 12.9 dB, an output P1dB of -4.17 dBm, an output IP3 of 16.47 dBm, a carrier suppression of 30.02 dBc and a sideband suppression of 39.62 dBc under an LO power of 14 dBm at the center frequency of 8 GHz. The chip consumed dc power of 66.36 mW. The chip dimensions, including all RF and DC pads, are 1.25 × 1.1 mm2

Original languageEnglish
Title of host publicationProceedings - 2019 22nd International Symposium on Design and Diagnostics of Electronic Circuits and Systems, DDECS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728100739
DOIs
StatePublished - Apr 2019
Event22nd International Symposium on Design and Diagnostics of Electronic Circuits and Systems, DDECS 2019 - Cluj-Napoca, Romania
Duration: 24 Apr 201926 Apr 2019

Publication series

NameProceedings - 2019 22nd International Symposium on Design and Diagnostics of Electronic Circuits and Systems, DDECS 2019

Conference

Conference22nd International Symposium on Design and Diagnostics of Electronic Circuits and Systems, DDECS 2019
Country/TerritoryRomania
CityCluj-Napoca
Period24/04/1926/04/19

Keywords

  • current-mode passive mixer
  • I/Q transmitter
  • inductively coupled resonator

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