Title :
Performance of 16-channel, photonic, phased-array antenna calibration system
Author :
McDermitt, C.S. ; Dorsey, W. Mark ; Godinez, M.E. ; Bucholtz, Frank ; Parent, M.G.
Author_Institution :
Opt. Sci. Div., Naval Res. Lab., Washington, DC, USA
Abstract :
Experimental results from a 16-channel photonic phased-array calibration system are presented. The calibrator utilises an array of fibre-pigtailed, zero-biased photodiodes as optical transducers to transmit an RF signal from an electrically-shorted dipole integrated in each unit cell of a frequency-selective surface radome. RF phase and amplitude stability, along with the overall RF transparency of the hardware, are presented. The system successfully demonstrates a solution with performance suitable for in situ real-time calibration of phased-array antennas.
Keywords :
antenna phased arrays; calibration; dipole antenna arrays; frequency selective surfaces; photodiodes; transducers; wireless channels; RF; amplitude stability; channel photonic phased-array antenna calibration system; electrically-shorted dipole; fibre-pigtailed photodiode; frequency-selective surface radome; optical transducer; radiofrequency signal; zero-biased photodiode;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.2607
