Miniaturized low noise variable MMIC amplifiers with low power consumption for L-band portable communication applications

Miniaturized L-band low-noise variable gain amplifiers for portable mobile communication equipment applications are discussed. The fabricated monolithic microwave integrated circuits (MMICs) use D-mode GaAs MESFETs and need only positive bias. The amplifier has a noise figure of 3 dB and a gain of 14 dB. The chip size is approximately 1 mm*1 mm and the current dissipation is only 1.8 mA. >