Photonic microwave true time delays for phased array antennas using a 49 GHz FSR integrated optical micro-comb source [Invited]

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Orthogonally Polarized RF Optical Single Sideband Generation and Dual-Channel Equalization Based on an Integrated Microring Resonator (2018, background): “To date, many key functions have been realized, including advanced modulation format generators [5]–[10], beamforming [11], transversal filters and signal processors [12]–[14], RF”
Photonic RF Arbitrary Waveform Generator Based on a Soliton Crystal Micro-Comb Source (2020, background): “tions [25]–[33], such as optical true time delays [25], transversal filters [26]–[28], signal processors [29]–[31], channelizers [34], [35], and phase-encoded signal generators [33].”
Broadband Photonic RF Channelizer With 92 Channels Based on a Soliton Crystal Microcomb (2020, background): “they offer a large number of coherent wavelength channels in a mm2-size footprint, and have enabled a wide range of RF devices and applications [41], [42], such as RF true time delays [43], [44], transversal signal processors [45]–[50], frequency conversion [51], phase-encoded signal generators [52]”
Broadband RF Channelizer Based on an Integrated Optical Frequency Kerr Comb Source (2018, background): “forms [32]–[40], offer many advantages for broadband RF channelizers compared with conventional multi-wavelength sources, such as a much higher number of wavelengths [41]–[46] and”