Ultracompact PHS Terminal
H.Tsurumi
M.Saito
K.Ishida
Abstract
We have developed a miniature transceiver, including a highly integrated monolithic microwave IC MMIC front end, for the 1.9 GHz band personal handy-phone system PHS. The terminal, incorporating direct-conversion transmitter and receiver technology, consists of four high-density RF circuit modules and a digital signal processing LSI with a 2.7 V power supply. The four functional modules are a power amplifier, a transmitter, a receiver, and a frequency synthesizer. Each module contains one IC chip and passive LCR components connected with solder bumps on the module substrate.
The total volume of the newly developed PHS terminal is 60 cm3, with the 12 cm3 front end containing the four RF functional circuit modules. The air interface connection with a PHS base station simulator has been confirmed.
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