Title :
An 800 MHz-band front-end MCM for antenna diversity type mobile communication handset terminals
Author :
Suematsu, N. ; Hiroshige, K. ; Sakai, A. ; Maemura, K. ; Kasai, N. ; Iyama, Y. ; Ishida, O.
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
An 800 MHz-band front-end multi-chip module (MCM) was developed for antenna diversity type handset terminals of the Japanese personal digital cellular systems (PDC). This module includes a dual input GaAs FET low noise amplifier (LNA) with a switching function, a SAW filter and a GaAs dual-gate FET mixer. Since the dual input LNA works as two independent LNAs and a SPDT switch, a very small size and a low production cost front-end MCM can be obtained. The package size of this MCM is 0.13 cc. With -10 dBm local input power and a supply d.c. current of 4.0 mA and a d.c. voltage of 3 V, a noise figure of 3.2 dB and a conversion gain of 22.5 dB were obtained.
Keywords :
UHF amplifiers; UHF filters; UHF integrated circuits; UHF mixers; cellular radio; diversity reception; land mobile radio; multichip modules; personal communication networks; surface acoustic wave filters; 22.5 dB; 3 V; 3.2 dB; 4.0 mA; 800 MHz; DC supply current; DC voltage; GaAs; III-V semiconductors; Japan; PDC; SAW filter; SPDT switch; antenna diversity; conversion gain; dual input FET low noise amplifier; dual-gate FET mixer; front-end MCM; handset terminals; local input power; low production cost; mobile communication handset terminals; multichip module; noise figure; package size; personal digital cellular systems; switching function; Costs; FETs; Gallium arsenide; Low-noise amplifiers; Mobile antennas; Packaging; Production; SAW filters; Switches; Telephone sets;
Conference_Titel :
Wireless Applications Digest, 1997., IEEE MTT-S Symposium on Technologies for
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-3318-7
DOI :
10.1109/MTTTWA.1997.595136
