Design Study on RF Stage for Miniature PHS Terminal

Hiroshi TSURUMI  Tadahiko MAEDA  Hiroshi TANIMOTO  Yasuo SUZUKI  Masayuki SAITO  Kunio YOSHIHARA  Kenji ISHIDA  Naotaka UCHITOMI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E79-C   No.5   pp.629-635
Publication Date: 1996/05/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Active Devices
Keyword: 
direct conversion, personal handy phone system,  RF functional circuit module,  bump interconnection technique,  

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Summary: 
A miniature transceiver, including highly integrated MMIC front-end, for 1.9 GHz band personal handy phone system(PHS) has been developed. The terminal, adopting direct conversion transmitter and receiver technology, consists of four high-density RF circuit modules and a digital signal processing LSI with 2.7 V power supply. The four functional modules are a power amplifier, a transmitter,a receiver, and a frequency synthesizer. Each functional module includes one IC chip and passive LCR components connected with solder bumps on module substrate. The experimental miniature PHS handset has been fabricated to verify the design concepts of the miniature transceiver. The total volume of the developed PHS terminal is 60cc, including the 12cc front-end which comprises the four RF functional circuit modules. The air interface connection with the PHS base station simulator has been confirmed.