Almost ten years have passed since the first experimental attempts of enhancing
functionality of radiofrequency metamaterials by embedding active circuits that mimic …

Beamforming in series-fed antenna arrays can inherently suffer from beam-squinting. To
overcome the beam-squinting problem, low-dispersion, fast-wave transmission lines can be …

With the rapid development of newgeneration communication technology such as multiple-
input/multiple-output technology, ultrawideband communication, and 5G technology …

The big data era has witnessed expansion of information traffic at a 26% compound annual
growth rate (CAGR) during one decade, as shown in Figure 1 (a)[1],[2]. Rising data rates …

A compact self-matched negative group delay (NGD) circuit without the need for an external
matching circuit is proposed. The proposed NGD circuit is composed of two-port open …

The radiation properties of wideband Fabry-Pérot cavity (FPC) antennas have been
investigated by studying the non-Foster behavior of the reflection coefficient phase of the …

Two classes of frequency-reconfigurable multi-band negative-group-delay (NGD) circuit
networks that feature low-input-power-reflection capabilities are reported. They consist of …

A compact dual-band negative group delay circuit (NGDC) is proposed. The proposed
NGDC is composed of an open-circuited transmission line and two resistors connected by …

This letter introduces a novel type of non-Foster element using a microwave transversal-filter-
based negative group delay (NGD) circuit that can exhibit unconditional stability. The …

This paper investigates on the theorization, design, fabrication and measurement of original
phase shifter (PS) operating with two-step stair phase behavior. The innovative stair PS is …