SiGe mixer exhibits low noise, high linearity in wireless base stations

摘要

Maxim Integrated Products' new MAX2042 upconverting and downconverting, double-balanced passive mixer operates at 2 to 3 GHz. The SiGe (silicon-germanium) chip includes an internal local-oscillator buffer and two baluns. It outputs an intermediate frequency of 50 to 500 MHz. Power consumption is 690 mW at 5V and 396 mW at 3.3V. Typical applications include LTE (long-term evolution), wireless base stations, WiMax (worldwide interoperability for microwave access), MMDS (multipoint-multichannel-distribution service), and WCS.