Active reception group antennna for RF or HF signals has each reception channel supplied with local oscillator signal and calibration signal via distribution network

摘要

The group antenna has a number of channels each converting a reception signal provided by a reception antenna element (ANT) into an IF signal (ZF) via a pre-amplifier (LNA) and a series connected mixer (MIX), a distribution network (VNG) supplying each channel with a local oscillator signal (LO) and a calibration signal (CAL), fed to the output of the antenna element.