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In this paper, we propose a novel composite negative group delay circuit to reduce the signal attenuation required to obtain negative group delay. It is already known that negative group delay can be obtained in a specific frequency of signal attenuation. For the same negative group delay of −6 ns, the signal attenuation of the conventional circuit is 31.25 dB, while the proposed composite circuit...
In this paper, a reflective type tunable group delay circuit (TGDC) is proposed. The proposed TGDC consists of a 3 dB 90° hybrid coupler and reflective type resonators. The design equations of the proposed TGDC have been derived using port reduction method and validated by simulation and experimental results. In order to show the validity of the proposed TGDC, the simulation and an experiment were...
A design method to reduce the size of the planar negative group delay circuit (NGDC) is proposed by using a stepped impedance resonator (SIR) concept. From the conventional transmission line resonator, an equivalent stepped impedance resonator with reduced size is derived. To validate the derivation, the reflection coefficient and group delay response are compared between the two types of one-port...
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