2023
DOI: 10.2528/pierl23090902
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Planar Tunable Negative Group Delay Circuit with Low Reflection Loss

Chithra Liz Palson,
Deepti Das Krishna,
Babita Roslind Jose

Abstract: This paper presents the design of a planar tunable Negative Group Delay (NGD) circuit with low reflections. A pulse-shaped stub inscription on the signal strip of a microstrip line generates a negative group delay, which can then be tuned to a desired value by varying the resistance inside the inscription. Poor reflection characteristics are inherent in such circuits, and a conventional solution like a simple impedance matching circuit compromises the overall NGD performance for a reduced reflection loss. Here… Show more

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