Frequency-divider circuit is a key building block of phase-locked-loop (PLL) and frequency synthesizer (FS) circuits, which are required for all data communication and telecommunication systems. However, the failure of frequency-divider circuits functioning at low-voltage high-frequency operation is.....
[Detail]
This invention discloses an alternative approach of electrically tuning silicon-based waveguide-coupled microresonators that employs photoaligned liquid crystals as cladding layers. Planar optical microresonators that partially confine light and support sharp optical resonances have long been demon.....
[Detail]
The invented double-balanced quadrature-input quadrature-output divider (QIQOD) is based on conventional multiplier-based regenerative dividers but employs four different feedback loops with appropriate phase shifts. By making use of quadrature phase outputs from any quadrature signal generator, the.....
[Detail]
