A high performance GaAs MMIC upconverter with an automatic gain control amplifier

Huainan Ma Huainan Ma,J Shibata,Hiroshi Nakamura Hiroshi Nakamura,Khen-Sang Tan Khen-Sang Tan,Sher Jiun Fang Sher Jiun Fang,Atsushi Tamura Atsushi Tamura,Fujiang Lin Fujiang Lin

doi:10.1109/gaas.1997.628276

A high performance GaAs MMIC upconverter with an automatic gain control amplifier

Huainan Ma Huainan Ma, J Shibata + Show 5 more

https://doi.org/10.1109/gaas.1997.628276

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Publication Date: Oct 12, 1997

Citations: 8

Affiliation: Oki Electric Industry (Japan), Institute of Microelectronics

#Automatic Gain Control Amplifier #Automatic Gain Control + Show 8 more

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Abstract

A newly developed GaAs MMIC upconverter with an automatic gain control (AGC) amplifier is presented. The circuit is to be used in a 1.9 GHz RF transceiver for the Japanese PHS applications. The features of the upconverter are: (1) on-chip 50 /spl Omega/ impedance matching for all AC input and output signals; (2) a double balanced Gilbert cell and a 2-stage AGC amplifier with matching circuits that provide 23 dB conversion gain, -39 dBc LO suppression, -23 dBc image suppression and 30 dB gain control; (3) Adjacent Channel Power (ACP) of -70 dBc; and (4) a die size of only 2.87 mm/sup 2/ (2.52 mm/spl times/1.14 mm).

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