Demodulation characteristics of a 20GHz-band direct RF undersampling receiver

K. Norishima, T. Koizumi, M. Motoyoshi, S. Kameda, N. Suematsu

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

Abstract

In this paper, we describe the configuration of a direct RF undersampling receiver and demonstrate the demodulation characteristics of QPSK signal for Ka-Band VSAT (Very small aperture terminal). Two different clock (CLK) sources are used to compare the difference of CLK jitter effect on the EVM. In the case of the received RF frequency is 19.4GHz and the CLK frequency is 808MHz (24th undersampling) with jitter of 270fs r.m.s., the measured EVM of 2.7% is achieved. By using a conventional pulse pattern generator having jitter of 670fs r.m.s., the EVM of 4.6% is obtained and it shows the degradation of demodulation characteristics by the CLK jitter.

Original languageEnglish
Title of host publication2016 Asia-Pacific Microwave Conference, APMC 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509015924
DOIs
Publication statusPublished - 2017 May 17
Event2016 Asia-Pacific Microwave Conference, APMC 2016 - Aerocity, New Delhi, India
Duration: 2016 Dec 52016 Dec 9

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume0

Other

Other2016 Asia-Pacific Microwave Conference, APMC 2016
CountryIndia
CityAerocity, New Delhi
Period16/12/516/12/9

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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