Adaptive Broadband Beamforming with Spatial-Only Information

A novel adaptive broadband beamforming structure is proposed, where the tapped delay-lines in the traditional broadband beamforming structure are replaced by sensor delay-lines and only one coefficient is required for each of the received sensor signals. In this way, the highspeed analogue tapped delay-lines or digital sampling circuits are not required any more for some broadband beam- forming applications and beamforming can be realized by simple analogue circuits. Since there is no temporal information employed for beamforming, it can be considered as a beamforming method with spatial only information. The effectiveness of the proposed method is verified by simulations.