The investigation of a portable solar telescope with a high gain metamaterial antenna for F10.7 radio flux measurement.

This article focuses on the design, fabrication, and testing of a metamaterial (MTM) antenna incorporating phase correction metasurfaces (PCMs) to enhance gain and aperture efficiency for solar radio telescopes observing the solar F10.7 index at 2.8 GHz. The MTM antenna, based on a dual circularly polarized Fabry–Pérot resonant antenna (FPRA) with optimized artificial magnetic conductor (AMC) units, achieves a measured left-handed circular polarization (LHCP) gain of 21.4 dBi and aperture efficiency of 36.6%, representing an 11.4% improvement over traditional FPRA designs. A portable solar telescope system integrating this antenna with a dual-channel receiver, data acquisition, and display modules was developed and experimentally validated, demonstrating accurate solar radio flux measurements consistent with established observatories. The study highlights the MTM antenna's low profile, reduced backward radiation, and improved efficiency as advantageous for solar radio burst monitoring.