Submicrosecond scan-angle switching photonic beamformer with flat RF response in the C and X bands

Oded Raz*, Sharon Barzilay, Ruth Rotman, Moshe Tur

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A wideband (<10 GHz) beamformer, based on a photonic true-time-delay, with submicrosecond scan-angle switching is reported. The smooth microwave transmission (ripples >0.5 dB and >3°) and superb uniformity among the elements (>0.1 dB and >0.5°) are then used for the processing of 1 GHz-wide linear frequency modulation (LFM) signals in both the C and X bands with excellent performance. This performance is also maintained under dynamic operation, where a fast tunable laser is employed to provide >300 ns wavelength-controlled angle scanning. Based on these characteristics, an optimized architecture, where a photonic beamformer feeds a series of classical subarrays, can offer high performance in both the time and spatial domains for large, wideband phased-array antennas, with wide scan angles.

Original languageEnglish
Pages (from-to)2774-2781
Number of pages8
JournalJournal of Lightwave Technology
Volume26
Issue number15
DOIs
StatePublished - 2008

Keywords

  • Array signal processing
  • Microwave photonics
  • Optical antenna beamforming
  • Optical signal processing
  • Radar

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