A metaloop antenna (1FD-MetaLPA), made of C-type metaatoms and having a single feed point, F L ', is created to radiate left-hand circularly polarized (LHCP) axial beam at frequency f xmlns:xlink="http://www.w3.org/1999/xlink">LH-1FD = 2.55 GHz right-hand (RHCP) xmlns:xlink="http://www.w3....

For mobile THz applications, integrated beam steering transmitters are essential. Beam approaches using leaky-wave antennas (LWAs) attractive in that regard since they do not require complex feeding control circuits and is simply accomplished by sweeping the operating frequency. To date, only a few LWAs have been reported. These based on polymer or graphene substrates thus, it quite impossible ...

Abstract Micron-level alignment of the undulator line is required for successful operation linear accelerator based high gain free electron lasers to produce powerful radiation at X-rays’ wavelengths. Such precision in straightness trajectory allows an optimal transverse superposition between electrons and photon beam. This extremely challenging can only be achieved via beam-based techniques. I...