Forming High Gain Wide Beam with NULL Steering Ability to Receive UAV Signal Based on Phased Array Antenna

Alaa Nadim Salman, Shokri Almekdad, Mohamad Alhariri

Abstract


Successfully achieving the mission of the unmanned aerial vehicle (UAV) requiring a high gain data link between the UAV and the ground control station (GCS). The antenna of the ground station must has a narrow, precisely guided beam towards the UAV. Widening the beamwidth in phased array will be on the expense of reducing the gain and increasing the possibility of receiving the interference signal, this may lead to the failure in achieving the desired link. This paper presents a new method to achieve an automatic forming of the reception beam and automatic tracking of the UAV’s signal in the digital phased array without the need of the complex digital signal processing algorithms used in smart antenna. The proposed approach is based on the complex vector multiplication and phase conjugation technique. The UAV will stay on the beak of the array factor. The resulted array is a combination between retrodirective array and phased array, with beamwidth equal to the field of view without reducing the gain and with null steering ability.

Keywords


Phased Array, phase conjugation, Retrodirective Array, geometric phase, complex vector multiplication, null steering

Full Text:

PDF


DOI: http://dx.doi.org/10.24138/jcomss.v15i2.673



Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.