A SAW-less LTE transmitter with high-linearity modulator using BPF-based I/Q summing

Takahiro Nakamura, Naoki Kitazawa, Kaoru Kohira, Hiroki Ishikuro

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

    3 Citations (Scopus)

    Abstract

    A SAW-filter-less LTE transmitter based on 65-nm CMOS technology, incorporating a passive quadrature modulator (QMOD) with band-pass-filter (BPF) I/Q summing technique, was developed. The passive operation and the BPF I/Q summing technique, respectively, contribute to low noise performance and high input impedance seen from baseband signal, resulting in low receiver-band noise and high linearity of the transmitter. A transmitter using the QMOD exhibits both inspecification receiver-band noise (<-156 dBc/Hz) and high output 3rd intercept point (OIP3 = 20.6 dBm).

    Original languageEnglish
    Title of host publicationESSCIRC 2014 - Proceedings of the 40th European Solid-State Circuit Conference
    EditorsGaudenzio Meneghesso, Pietro Andreani, Andrea Bevilacqua
    PublisherIEEE Computer Society
    Pages387-390
    Number of pages4
    ISBN (Electronic)9781479956944
    DOIs
    Publication statusPublished - 2014 Oct 31
    Event40th European Solid-State Circuit Conference, ESSCIRC 2014 - Venezia Lido, Italy
    Duration: 2014 Sep 222014 Sep 26

    Publication series

    NameEuropean Solid-State Circuits Conference
    ISSN (Print)1930-8833

    Other

    Other40th European Solid-State Circuit Conference, ESSCIRC 2014
    CountryItaly
    CityVenezia Lido
    Period14/9/2214/9/26

    Keywords

    • LTE
    • SAW less transmitter
    • high-pass filter
    • linearity
    • quadrature modulator

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering

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  • Cite this

    Nakamura, T., Kitazawa, N., Kohira, K., & Ishikuro, H. (2014). A SAW-less LTE transmitter with high-linearity modulator using BPF-based I/Q summing. In G. Meneghesso, P. Andreani, & A. Bevilacqua (Eds.), ESSCIRC 2014 - Proceedings of the 40th European Solid-State Circuit Conference (pp. 387-390). [6942103] (European Solid-State Circuits Conference). IEEE Computer Society. https://doi.org/10.1109/ESSCIRC.2014.6942103