Title :
A class AB monolithic mixer for 900-MHz applications
Author :
Fong, Keng Leong ; Hull, Christopher Dennis ; Meyer, Robert G.
Author_Institution :
Dept. of Electr. Eng., California Univ., Berkeley, CA, USA
fDate :
8/1/1997 12:00:00 AM
Abstract :
A class AB downconversion mixer for 900-MHz applications is presented. The circuit is implemented in a 25-GHz fT bipolar process and consumes 10.2 mA total current from a 3-V supply. The design has a power gain of 7.5 dB and operates with supply voltages from 2.7 to 5 V. A single-sideband noise figure of 7.5 dB is achieved by design simplicity, use of bond-wire degeneration in the common-emitter driver stage, and optimization of the device sizes and bias currents. An input 1-dB compression point of -1.5 dBm is achieved by exploiting the class AB behavior of the common-emitter driver stage
Keywords :
MMIC mixers; UHF integrated circuits; UHF mixers; bipolar analogue integrated circuits; circuit optimisation; integrated circuit design; integrated circuit noise; 10.2 mA; 2.7 to 5 V; 25 GHz; 3 V; 7.5 dB; 900 MHz; UHF applications; bias currents; bipolar process; bond-wire degeneration; class AB monolithic mixer; common-emitter driver stage; device sizes; downconversion mixer; optimization; Analog integrated circuits; Driver circuits; Filters; High speed integrated circuits; Integrated circuit noise; Microwave devices; Noise figure; Noise reduction; RF signals; Radio frequency;
Journal_Title :
Solid-State Circuits, IEEE Journal of
