Title :
An RF cascode BJT-LNA with shunt-series input matching
Author_Institution :
Inst. of Electron. Res., Ain Shams Univ., Cairo, Egypt
Abstract :
An RF low noise amplifier (LNA) is proposed using BJT cascode topology to provide gain with low bias current consequently lower power dissipation and lower noise figure (NF). The circuit was designed and simulated with SPICE using a bipolar model card. At 1 GHz, the LNA noise figure is 1.87 dB, forward gain is 14.3 dB, reverse isolation is -60 dB, and excellent third order intermodulation intercept point (IIP3) of 3 dBm are obtained. The LNA consumes 2.3 mA from a 2 V power supply.
Keywords :
SPICE; UHF amplifiers; UHF bipolar transistors; network topology; 1 GHz; 1.87 dB; 14.3 dB; 2 V; 2.3 mA; BJT cascode topology; RF low noise amplifier; SPICE; bias current; bipolar junction transistor; bipolar model card; forward gain; noise figure; power dissipation; reverse isolation; shunt-series input matching; third order intermodulation intercept point; Circuit noise; Circuit simulation; Circuit topology; Impedance matching; Low-noise amplifiers; Noise figure; Noise measurement; Power dissipation; Radio frequency; Radiofrequency amplifiers;
Conference_Titel :
Radio Science Conference, 2003. NRSC 2003. Proceedings of the Twentieth National
Print_ISBN :
977-5031-75-3
DOI :
10.1109/NRSC.2003.1217376
