Abstract: This paper theoretically investigates a quartering circular loop antenna composed of four identical arc elements with independent feed sources, operating in ionospheric plasmas at very low ...

Abstract: This paper presents the design, optimization, and comparative analysis of two compact antenna structures-a circular loop antenna and an annular ring monopole antenna-both operating at 900 ...

Replin by Hainsworth, the aviation fabrics division of 240-year-old British mill AW Hainsworth, is introducing its ...

Using digital techniques has caused a resurgence of interest in VLF — very low frequency — radio. Thanks to software-defined radio, you no longer need huge coils. However, you still need a suitable ...

The new Controlled Reception Pattern Antenna (CRPA) is part of the Digital GPS Anti-jam Receiver (DIGAR) system installed in ...

Materials scientist Dr. Yige Sun, from the Department of Materials and Linacre College at the University of Oxford, and the Faraday Institution, argues that as space becomes critical infrastructure ...

Consumer Reports says the best dashcams include the Rexing V1-4K Ultra, the Nextbase 622GW, the Viofo A119 V3, the Rove R2-4K ...

Artemis 2 commander Reid Wiseman gazes at the moon ahead of NASA's historic lunar flyby on April 6, 2026. (Image credit: NASA ...

Crew, which includes Canadian Jeremy Hansen, broke record for greatest distance travelled by humans away from Earth set by ...

Closed Loop Partners’ Center for the Circular Economy released new findings to support increased recovery and recycling of prescription pill bottles. Leveraging the Closed Loop Center’s experience ...