RANsemi Launches Plug-and-Play Baseband Board for Split 7.2 Open RAN Radio Units

Powered by RANsemi’s RU baseband SoC and TI’s 5G transceiver, RNS805-RU-BB delivers full-band 5G/4G flexibility and neutral host capability with multi-band, multi-operator functionality

Bristol, UK – Wednesday July 16^th, 2025 – RANsemi, the British wireless semiconductor company pioneering 5G and 6G radio access network (RAN) baseband technologies, today announced the launch of RNS805-RU-BB, a fully integrated baseband board designed to simplify and accelerate the development of 5G/4G Open RAN Radio Units (O-RUs). Supporting Split 7.2 architectures and all 5G FR1 bands from 600 MHz to 6 GHz, the board is designed for manufacturers and system integrators developing next-generation O-RUs for complex multi-band, multi-operator deployments.

The RNS805-RU-BB combines RANsemi’s RNS805 O-RU SoC with the AFE7769D 4T4R multi-band analogue front-end radio frequency (RF) transceiver solution from Texas Instruments (TI), offering a compact and flexible baseband platform that integrates seamlessly with various RF front-end modules. Designed to support everything from indoor small cells to outdoor macro units, the 165-by-170 mm board provides a complete Cat A Split 7.2 baseband solution with integrated digital pre-distortion (DPD), GNSS/IEEE1588/SyncE timing synchronisation, and support for both TDD and FDD modes.

“The Open RAN market needs flexibility without complexity – and that’s exactly what the RNS805-RU-BB delivers,” said Oliver Davies, VP Marketing at RANsemi. “Developed in close collaboration with TI, it’s a plug-and-play radio baseband unit designed for real-world integration. With deployment-proven O-RAN Alliance O-RU compliance, and everything needed to move from lab bench to field, it helps vendors eliminate design friction and accelerate O-RU development with confidence.”

The board is optimised for practical deployment scenarios, including 4T4R small cell operation with 200 MHz occupied bandwidth, three-carrier aggregation using 300 MHz instantaneous bandwidth, and dual-band configurations such as 2T2R in TDD paired with 2T2R in FDD.

“Digital predistortion techniques that linearise power amplifiers remain a significant challenge for manufacturers developing 4G and 5G radio solutions,” said Kishore Ramaiah, product line manager for Wireless Infrastructure at Texas Instruments. “Our collaboration with RANsemi to incorporate the industry-leading DPD-integrated AFE7769D transceiver into their reference board will help designers quickly deliver compact, low-power radio solutions for small cells, distributed antenna systems and macro radios.”

The board supports eCPRI fronthaul through SFP28 for 10/25GE or 10GE copper Ethernet and includes discrete RF front-end interfaces for flexible power amplifier configurations across deployment types. It features RJ45 and USB debug interfaces, supporting both Power over Ethernet and 12V auxiliary power. The RNS805-RU-BB includes a complete 5G NR and LTE radio unit software licence with full management, control, synchronisation, and user-plane functions.

Designed for both standalone deployment and dual-board cascading for more complex radio units, the RNS805-RU-BB is available now for lab testing and commercial implementations.

For technical documentation, ordering, or licensing information, visit www.ransemi.com or contact info@ransemi.com.