Enhanced-resolution folded C-section phaser

A new C-section phasers based on folded coupled-line couplers has been proposed for high-resolution analog signal processing (ASP). The folded configuration of the coupled-line coupler provides a tight coupling in a planar configuration between the input and the coupled port, using sections of relatively small coupling values. It subsequently provides a larger group delay swing in the corresponding C-section phaser required for enhanced resolution ASP. The proposed phaser is demonstrated using full-wave simulations.