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Photoshop tutorial: How to make a bi-directional, optical illusion, photo portrait

Photoshop cc 2014 tutorial showing how to create a bi-directional, optical illusion, photo portrait. Is the face looking to the left or towards the camera? IMPORTANT: At 4:22, Ctrl-click or Cmd-click ...
IEEE

Microstrip Branch-Line Directional Couplers With Modified Layout for Efficient Compensation of Junction Discontinuities and Better Design Flexibility

Abstract: Design of a branch-line directional coupler (DC) is associated with the need to compensate an impact of discontinuities of transmission line (TL) T-junctions manifested in the input mismatch ...
IEEE

A New Class of Filtering Coupler Networks in Both Co-Directional and Contra-Directional Configurations Based on Cross-Coupled Resonators

Abstract: This article presents a comprehensive treatment and a systematic design methodology of filtering couplers based on canonical coupled resonator networks. A theoretical framework for the ...