Concurrent dual-band 1-bit digital transmitter using band-pass delta-sigma modulator

Takashi Maehata, Kazuyuki Totani, Suguru Kameda, Noriharu Suematsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

This paper proposes a 1-bit digital transmitter able to output concurrent dual-band RF signals using band-pass delta-sigma modulator (BP-DSM). The transmitter consists of two BP-DSMs that share a portion of feedback loop to generate two stop-bands to suppress the quantization noise in the dual-band and meanwhile keep the stability after the combination of the BP-DSMs. The transmitter complexity is just proportional to each bandwidth of the dual-band RF signals and is irrelevant to the carrier spacing between the two bands. Measurement results demonstrate that two LTE signals with 5 MHz bandwidth at 0.8 GHz and 1.5GHz, respectively, are generated with the proposed transmitter using a single bit digital data stream of 3.9 Gbps, with high adjacent channel leakage ratio (ACLR) of 50dB at 0.8GHz and 48dB at 1.5GHz.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuMIC 2013
Subtitle of host publication8th European Microwave Integrated Circuits Conference
Pages552-555
Number of pages4
Publication statusPublished - 2013 Dec 1
Event2013 8th European Microwave Integrated Circuits Conference, EuMIC 2013 - Held as Part of 16th European Microwave Week, EuMW 2013 - Nuremberg, Germany
Duration: 2013 Oct 62013 Oct 8

Publication series

NameEuropean Microwave Week 2013, EuMW 2013 - Conference Proceedings; EuMIC 2013: 8th European Microwave Integrated Circuits Conference

Conference

Conference2013 8th European Microwave Integrated Circuits Conference, EuMIC 2013 - Held as Part of 16th European Microwave Week, EuMW 2013
CountryGermany
CityNuremberg
Period13/10/613/10/8

Keywords

  • 1bit D/A converter
  • Band-pass
  • Concurrent dualband
  • Delta-sigma
  • LTE

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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