Four-channel intermediate frequency equalization amplification module for radio astronomical receiver

The invention discloses a four-channel intermediate frequency equalization amplification module for a radio astronomical receiver, and the module consists of two groups of symmetrical bell-shaped equalization structures, amplifiers, power dividers and microstrip lines, and the two groups of bell-shaped equalization structures, amplifiers and power dividers are respectively fixed on a printed circuit board through the microstrip lines (11). The module carries out gain equalization on eight kinds of signals in a frequency band of 100MHz and 600MHz, improves the gain flatness of intermediate frequency signals, and amplifies the intermediate frequency signals. And the gain flatness of the eight intermediate frequency signals passing through the four-channel intermediate frequency equalization amplification module is less than 3.5 dBm. The invention is composed of a low noise amplifier, an equalizer and a power divider. The equalizer adopts a design method of combining lumped elements and microstrip lines, and the