2J Antennas designs and manufactures external and embedded antenna solutions for wireless connectivity in automotive, industrial, telematics and IoT systems. Its portfolio covers more than 800 antenna and RF accessory configurations, including cellular 5G NR and 4G LTE antennas, GNSS antennas, Wi-Fi 6E and Wi-Fi 7 antennas, multi-technology MIMO combinations, embedded surface-mount antennas, wall-mount, magnetic-mount and pole-mount solutions, as well as splitters, mounting hardware, development boards and RF accessories. For engineers integrating multiple radios into compact platforms, 2J Antennas offers combination antennas that can integrate several cellular, Wi-Fi and GNSS elements in a single mechanical assembly. The company supports antenna design and development, RF testing, OTA measurements, pre-certification and compliance work, cable and connector customization, and application-specific mechanical modifications. Recent portfolio highlights include compact multi-in-one antenna systems supporting 4x cellular 5G NR MIMO, 4x Wi-Fi 6E/Wi-Fi 7 MIMO and GNSS, alongside miniature embedded 5G antennas. These solutions are relevant to connected vehicles, gateways, industrial IoT, asset tracking, smart infrastructure and other systems where RF performance, antenna placement, environmental durability and integration flexibility are critical design parameters. For RF design, the practical selection process also has to consider operating bands, antenna efficiency or RF gain, impedance matching, coexistence with adjacent radios, cable and connector losses, enclosure materials and the final installation environment. The manufacturer’s development resources are therefore useful during schematic definition, PCB layout, antenna placement, prototype tuning and compliance preparation. Engineers can use the available product families to compare integration level, antenna format, radio interface and environmental requirements while keeping the wireless architecture aligned with the mechanical design.