title: Opto-VLSI-based photonic true-time delay architecture for broadband adaptive nulling in phased array antennas.
abstract: This paper proposes a novel Opto-VLSI-based tunable true-time delay generation unit for adaptively steering the nulls of microwave phased array antennas. Arbitrary single or multiple true-time delays can simultaneously be synthesized for each antenna element by slicing an RF-modulated broadband optical source and routing specific sliced wavebands through an Opto-VLSI processor to a high-dispersion fiber. Experimental results are presented, which demonstrate the principle of the true-time delay unit through the generation of 5 arbitrary true-time delays of up to 2.5 ns each.
authors.affiliation: Centre for MicroPhotonic Systems, Edith Cowan University, Joondalup, WA, 6027, Australia. budij@ecu.edu.au
authors.forename: Budi
authors.initials: B
authors.lastname: Juswardy
authors.forename: Feng
authors.initials: F
authors.lastname: Xiao
authors.forename: Kamal
authors.initials: K
authors.lastname: Alameh