Design and Test of Innovative Three-Couplers-Based Bandpass Negative Group Delay Active Circuit

Editor’s notes:
This article presents a method for designing bandpass (BP) negative group delay (NGD) active circuits. The circuit topology consists of a distributed BP NGD passive circuit cascaded with a microwave amplifier. The design is validated through simulations and measurements of a prototype implementation.
—Binoy Ravindran, Virginia Tech