Title :
A 160-MHz bipolar wide-band IF amplifier
Author :
Sjöland, Henrik ; Mattisson, Sven
Author_Institution :
Dept. of Appl. Electron., Lund Univ., Sweden
fDate :
10/1/1998 12:00:00 AM
Abstract :
Wide-band intermediate-frequency (IF) amplifiers are needed when the data rates of communication systems increase. A single wide-band IF amplifier can also be used for a radio band with several narrow-band channels of varying strengths. High linearity is then required if intermodulation products are not to disturb weak channels. We have previously reported a highly linear wide-band IF amplifier in a complementary metal-oxide-semiconductor process. Using a similar topology, an npn-only bipolar amplifier with even higher linearity is now presented. The amplifier is fully differential and operates with a 5 V supply, At 20 MHz, 5 Vpp over a 1 kΩ load, the measured total harmonic distortion is just 9.068%
Keywords :
bipolar analogue integrated circuits; differential amplifiers; intermediate-frequency amplifiers; wideband amplifiers; 160 MHz; 20 MHz; 5 V; NPN transistors; bipolar wideband IF amplifier; fully differential amplifier; intermediate-frequency amplifiers; linearity; Broadband amplifiers; CMOS technology; Differential amplifiers; Distortion measurement; Linearity; Narrowband; Output feedback; Semiconductor optical amplifiers; Topology; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
