A MINIATURIZED SELF-MATCHED NEGATIVE GROUP DELAY MICROWAVE CIRCUIT

A Miniaturized Self-Matched Negative Group Delay Microwave Circuit

A miniaturized self-matched negative group delay (NGD) microwave circuit without the need for external matching networks is proposed. The NGD circuit is based on a modified parallel-type RLC resonator, in which lumped elements (capacitors and inductors) are implemented by microstrip gaps and high-impedance and short-circuited microstrip lines. To verify the design concept, an NGD circuit with t...

Broadband Microwave Negative Group Delay Transmission Line Phase Shifters

Negative Group Delay and Superluminal Propagation: An Electronic Circuit Approach

We present a simple electronic circuit which provides negative group delays for band-limited, base-band pulses. It is shown that large time advancement comparable to the pulse width can be achieved with appropriate cascading of negative-delay circuits but eventually the out-of-band gain limits the number of cascading. The relations to superluminality and causality are also discussed.

Negative group delay active topologies respectively dedicated to microwave frequencies and baseband signals

This paper proposes and describes in details the synthesis, design and implementation of two different active topologies exhibiting negative group delay (NGD) in different frequency bands. With the first of them, gain and NGD in microwave frequency band are simultaneously achieved; the basic cell consists in a field effect transistor (FET) cascaded with a shunt RLC series network. The second to...

A self adjusting delay circuit for pixel readout chips

A simple concept for automatic adjustment of important VLSI{circuit properties was proposed in 1]. As an application, a self adjusting monooop is reviewed, and detailed measurements are discussed regarding a possible implementation in the LHC 1 readout chip for the ATLAS{experiment 2].