A Novel Flat Broadband Passive Circuit with Negative Group Delay

The article introduces a novel flat broadband passive circuit with negative group delay, which is essential for high-performance broadband wireless communication systems. The circuit's negative group delay characteristic is crucial for improving device performance and signal integrity analysis. The equalization technology based on NGD can reconstruct signals changed due to delay, making it applicable in antenna design, power distributors, and phase shifters. The circuit design focuses on achieving a flat negative group delay with a low insertion loss of only 7 dB, which is significantly lower than many existing references. The article discusses the influence of component values on the circuit's flatness and bandwidth, providing a comprehensive analysis of capacitors, inductors, and resistors. The circuit's performance is validated through theoretical analysis, simulation, and actual measurements, demonstrating its practical application value and low production cost. The article concludes by highlighting the circuit's potential in reducing signal distortion and its suitability for various circuits to eliminate positive group delay.