A novel switched-beamforming antenna designed using active frequency selective surfaces (AFSS) is presented. The antenna consists of two parts: a source with an omnidirectional radiation pattern and a novel active triangular frequency selective surface (ATFSS) surrounding the source. Each unit cell in the ATFSS structure contains two diamond shaped patches connected with each other by... https://oxfordshopes.shop/product-category/shirts-career-slim-fit/