1/2fs direct RF under sampling reception in different RX channels

Daliso Banda, Osamu Wada, Tuan Thanh Ta, Suguru Kameda, Noriharu Suematsu, Tadashi Takagi, Kazuo Tsubouchi

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

2 Citations (Scopus)


We proposed an RF under sampling technique that allows the use of half the sampling frequency than is conventionally required for a single channel system. In this paper, a fs design methodology for multi-channel system is described and the application of this technique to the reception of signals in different channels is demonstrated. For the conventional technique, fs is constant even if the channel of reception changes, but in our proposed technique, fs is changed according to the channel's location in the system bandwidth. To validate the proposed fs design methodology, measurement of a front-end using the conventional and the proposed techniques was performed. The measured SNR for the proposed technique for channel one, two and three were 30.4 dB, 28.0 dB and 27.2 dB respective. Using QPSK modulation the EVM was measured to be -23.5 dB, -23.4 dB and -23.6 dB for Channel one, two and three respectively.

Original languageEnglish
Title of host publication2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9784902339314
Publication statusPublished - 2014 Mar 25
Event2014 Asia-Pacific Microwave Conference, APMC 2014 - Sendai, Japan
Duration: 2014 Nov 42014 Nov 7

Publication series

Name2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014


Other2014 Asia-Pacific Microwave Conference, APMC 2014


  • Direct RF sampling
  • Multi-mode receiver
  • RF bandpass sampling
  • Sampling mixer
  • Software radio

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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