IMPROVEMENTS IN ELECTROMAGNETIC WAVE RECEIVER FRONT ENDS

摘要

A receiver front end is provided capable of receiving electromagnetic wave signals having frequencies in the range of substantially 55 GHz to substantially 65 GHz, and having a gain of substantially 8 dB or above and a noise figure of substantially 4.5 dB or below, and comprising one or more multifunction monolithic microwave integrated circuits (MMICs). The or each MMIC may comprise a low noise amplifier (1), a sub-harmonic mixer (2), and an amplifier (3) for a reference signal for the sub-harmonic mixer.