Title :
A GaAs MMIC chip-set for mobile communications using on-chip ferroelectric capacitors
Author :
Nagata, Satoshi ; Ueda, Toshitsugu ; Noma, A. ; Koizumi, Hirotaka ; Kanazawa, Kenji ; Ishida, Hiroto ; Ueda, Toshitsugu ; Tanaka, T. ; Ueda, Daisuke ; Kazumura, M. ; Kano, G. ; De Araujo, C.P.
Author_Institution :
Matsushita Electronics Corp., Osaka, Japan
Abstract :
A description is given of a GaAs MMIC (monolithic microwave integrated circuit) chip-set for mobile communications which consists of a low-noise amplifier (LNA) with diversity switching capability and an integrated mixer with a local amplifier. These ICs are characterized by the dramatic reduction of pin count due to an on-chip ferroelectric bypass capacitor of barium strontium titanate ( in =300). The frequency characteristics of the LNA IC are shown; 18 dB of the gain, 3.2 dB of the noise figure, and more than 25 dB of diversity-switching capability are attained in the frequency range from 760-880 MHz. Mixing characteristics of the integrated mixer are also shown, where 12 dB of conversion gain and more than 15 dBm of two-tone third-order intermodulation are achieved.<>
Keywords :
III-V semiconductors; MMIC; field effect integrated circuits; gallium arsenide; mixers (circuits); mobile radio systems; ultra-high-frequency amplifiers; 12 dB; 18 dB; 3.2 dB; 760 to 880 MHz; BaSrTiO/sub 3/; GaAs; LNA IC; MMIC chip-set; UHF; bypass capacitor; diversity switching capability; integrated mixer; low-noise amplifier; mobile communications; monolithic microwave integrated circuit; on-chip ferroelectric capacitors; Communication switching; Frequency diversity; Gain; Gallium arsenide; Low-noise amplifiers; MMICs; Microwave integrated circuits; Mobile communication; Monolithic integrated circuits; Switching circuits;
Conference_Titel :
Solid-State Circuits Conference, 1993. Digest of Technical Papers. 40th ISSCC., 1993 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0987-1
DOI :
10.1109/ISSCC.1993.280010
