A Small-Sized 10 W Module for 1.5 GHz Portable DMCA Radios Using New Power Divider/Combiner

Masahiro MAEDA
Hiroyuki MASATO
Yorito OTA

IEICE TRANSACTIONS on Electronics   Vol.E80-C    No.6    pp.751-756
Publication Date: 1997/06/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeterwave High-power Devices)
GaAs,  power module,  high frequency,  power divider/combiner,  FET,  isolation,  second-harmonic control,  small size,  high power,  high efficiency,  low supply voltage,  mobile radio,  DMCA,  

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A small-sized three-stage GaAs power module has been developed for portable digital radios using M-16QAM modulation. This module has exhibited typical P1dB of 10 W with PAE of 48% and a power gain of 35 dB at a low supply voltage of 6.5 V in 1.453-1.477 GHz band. The volume of the module is only 1.5 cc, which is one of the smallest value in 10 W class modules ever reported. In order to realize the reduced size and the high power performances simultaneously, the module has employed new power divider/combiner circuits with significant features of the reduced occupation area, the improved isolation properties and the function of second-harmonic control.