British wireless semiconductor company RANsemi 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, 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 165mm by 170mm 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, 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 200MHz occupied bandwidth, three-carrier aggregation using 300MHz 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, 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 provides 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.
Engineered 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.
There’s plenty of other editorial on our sister site, Electronic Specifier! Or you can always join in the conversation by visiting our LinkedIn page.