论文信息 - A GaAs MMIC chip-set for mobile communications using on-chip ferroelectric capacitors

A GaAs MMIC chip-set for mobile communications using on-chip ferroelectric capacitors

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.<<ETX>>

[1] T. Hirao,et al. Advanced GaAs-MMIC process technology using high-dielectric constant thin film capacitors by low-temperature RF sputtering method , 1993, 15th Annual GaAs IC Symposium.

[2] Y. Mori,et al. Advanced technologies of low-power GaAs ICs and power modules for cellular telephones , 1992, GaAs IC Symposium Technical Digest 1992.

[3] J. Birkeland. A low power GaAs MESFET monolithic downconverter for digital handheld telephone applications , 1993, 1993 IEEE MTT-S International Microwave Symposium Digest.

[4] Y. Imai,et al. Design and performance of low-current GaAs MMICs for L-band front-end applications , 1991 .

[5] Vijay Nair,et al. Low current GaAs integrated down converter for portable communication applications , 1993, 15th Annual GaAs IC Symposium.