Abstract
In this paper we describe the system integration and the experimental demonstration of a photonically beamformed four-element receiving array antenna for radio astronomy applications. To our knowledge, the work described here is the first demonstration of the squint-free, continuously tunable beamsteering capability offered by an integrated photonic beamformer based on optical ring resonator truetime-delay units, with measured radiation patterns. The integrated beamformer is realized in a low loss, complementary metal-oxide-semiconductor (CMOS) compatible optical waveguide technology. The measurements show a wideband, continuous beamsteering operation over a steering angle of 23.5 degrees and an instantaneous bandwidth of 500 MHz limited only by the measurement setup.
Original language | Undefined |
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Pages (from-to) | 789-802 |
Number of pages | 14 |
Journal | Applied Optics |
Volume | 51 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Mar 2012 |
Keywords
- EWI-21708
- IR-79997
- METIS-296047