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Today, it is well known that the performance of an electrically small antenna is a function of how well it is impedance matched to the transmitter and receiver and how well its radiation efficiency is maximized. Recently, much attention has also focused on optimizing the bandwidth or quality factor (Q) of small antennas as a function of their electrical size. In the dawn of radio's invention and development,...
High power microwave (HPM) systems often suffer from being large in volume and mass. Specifically the antennas for HPM systems tend to be very large, as the field levels must be kept below what is required for holdoff in air. The general utility of HPM systems could is enhanced when they are made low profile, increasing the number of platforms and applications for which they can be considered. In...
In this contribution, we theoretically and numerically show that the operation bandwidth of an electrically small SRR loaded monopole antenna can be improved by using non-Foster active elements connected to the external gap of the SRR. The circuit implementation of the required non-Foster load in the VHF frequency band, as well as the stability analysis of the whole active component are also presented...
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