A Beamforming Method for PAF Receiver

Phased array feed is a advanced array receiving technology in the field of radio astronomy and microwave receivers. It is equivalent to a small array antenna evenly placed at the focal field of the radio telescope. Through the beamforming network at back stage, pattern synthesis, beam scanning and even continuous beam coverage can be realized. Time modulated array is a four-dimensional array antenna technology that adjusts the array pattern and phase through time series. Although this technology is mostly used in satellite communication and radar systems, it is similar to the analog beamforming network composed of phase shifter and attenuator in phased array feed. In this paper, based on the technology of time modulated array, it is applied to the analog beamforming technology of phased array feed, and the relevant simulation is carried out.