Broadband and Flexible Receiver Architecture for Software Defined Radio Terminal Using Direct Conversion and Low-IF Principle

Hiroshi TSURUMI  Hiroshi YOSHIDA  Shoji OTAKA  Hiroshi TANIMOTO  Yasuo SUZUKI  

IEICE TRANSACTIONS on Communications   Vol.E83-B    No.6    pp.1246-1253
Publication Date: 2000/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies)
software defined radio,  direct conversion,  low-IF,  channel selection,  image rejection,  

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A broadband and flexible receiver architecture is investigated for the handheld software defined radio (SDR). The proposed SDR architecture is based on the direct conversion and low intermediate frequency (low-IF) principle with digital channel filtering, which provides the receiver with flexibility for the multi-standard application. This architecture also enables analog-to-digital converter activating essentially in baseband or low frequency so that the clock jitter, which serves as an important subject in the well-known IF sampling method, can be reduced. Basic performance of the proposed architecture has been confirmed by the experimental model.