This work focuses on designing multiband-printed single/Multiple Input Multiple Output (MIMO) CP antennas for WLAN/V2X and NR Sub-6GHz 5G applications. It also delves into the design and implementation of a Four-Port MIMO antenna for wireless applications, addressing theoretical foundations and challenges. Additionally, the book explores critical aspects of software-defined radios (SDR), including modulation, signal processing, radio systems, TX/RX blocks, SDR-enabled phased arrays, and beam hopping techniques, with relevance to 5G, 6G, and IoT applications. Features:Explores advancements in planar monopole antennas, including bandwidth enhancement techniquesAnalyzes innovative antenna design structures, like miniaturized and conformal monopole antennas; and discusses modeling and implementationSpotlights WLAN and Wi-Fi 6/6E antenna design for next-gen laptops with practical insightsAddresses the use of triple-band antenna arrays for MIMO applications in laptopsFocuses on planar antenna advancements for diverse wireless bands and applicationsExplores multiband-printed single/MIMO CP antennas for WLAN/V2X and NR Sub-6GHz 5GCovers the design and implementation of a Four-Port MIMO antenna for wireless applications, including theoretical foundations and challengesExplores SDR, modulation, signal processing, radio systems, TX/RX blocks, SDR-enabled phased arrays, and beam hopping techniques for 5G, 6G, and IoT applicationsThis book is aimed at graduate students and researchers in electrical and electronic engineering, antennas, and wireless communication systems.