Abstract
A novel multifunctional negative group delay circuit is proposed. The circuit can realize three different negative group delay functions, including band-pass, high-pass and low-pass, which meet different conditions with capacitance, inductance and resistance. Analytical design equations are provided. The effects of different element values on the bandwidth, cut-off frequency and the minimum negative group delay of the circuit are analyzed. According to this design method, the negative group delay circuit is designed and fabricated. Simulation and measurement results are in agreement. It has good negative group delay characteristics. The feasibility of the design method is verified.
Highlights
Low latency is an important goal of modern communications
The simulation results are different from the measured results in the minimum negative group delay and the center frequency corresponding to the minimum negative group delay, which is due to the influence of the actual element accuracy, PCB substrate and routing
The proposed multifunctional novel NGD circuit realizes the functions of band-pass, high-pass and low-pass negative group delay when the elements take different values, respectively
Summary
Low latency is an important goal of modern communications. The group delay effect reduces the performance of the electronic circuit, limits the operating speed of the electronic system [1,2] and affects the performance of the communication system [3,4]. A novel design for a dual-band negative group delay circuit (NGDC) is proposed in [27]. If the element values are in different ranges, there will be three different negative group delay circuits of band-pass, high-pass and low-pass. This circuit has good negative group delay performance and insertion loss. For the negative group delay of band-pass, high-pass and low-pass circuits, the influence of element values on the center frequency, cut-off frequency and minimum negative group delay of the negative group delay circuit is given. This circuit can realize band-pass, high-pass and low-pass negative group delays when the capacitor, inductor and resistor take different values
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