Broadcom introduced what it calls the industry’s first 6G-ready digital front-end (DFE) SoC for massive MIMO and remote radio head (RRH) platforms, extending RF support up to 8.5 GHz. The new BroadPeak BCM85021 integrates 5nm CMOS DFE and ADC/DAC blocks on a single chip and targets 5G Advanced and emerging 6G deployments. Broadcom said the device reduces power consumption by up to 40% compared to existing massive MIMO and RRH solutions.
The BroadPeak SoC supports a carrier frequency range from 400 MHz to 8.5 GHz, covering 5G New Radio expansion into the 6 GHz n104 band (6.425–7.125 GHz) and the upper mid-band spectrum expected for early 6G systems (7–8.5 GHz). The device integrates digital predistortion (DPD), carrier aggregation, crest factor reduction, digital up/down conversion, gain control, filtering, and antenna front-end functions. It delivers instantaneous bandwidth (iBW) up to 860 MHz and occupied bandwidth (oBW) up to 800 MHz, with adjacent channel leakage ratio (ACLR) better than -50 dBc using DPD.
Broadcom positioned the device for scalable massive MIMO configurations, including 32T32R8FB, 16T16R4FB, and 8T8R2FB variants. The SoC supports ADC/DAC sampling rates up to 19.6 GS/s, receiver bandwidths from 100 MHz to 860 MHz and 1.6 GHz, and transmit/feedback bandwidths up to 3.2 GHz. Broadcom has begun shipping samples to early access customers.
- BCM85021 supports 400 MHz–8.5 GHz RF carrier range
- Targets 5G Advanced n104 (6.425–7.125 GHz) and upper mid-band 6G (7–8.5 GHz)
- Up to 40% power reduction vs. existing massive MIMO/RRH solutions
- Integrated DPD, carrier aggregation, crest factor reduction, DUC/DDC, filtering, gain control
- iBW up to 860 MHz; oBW up to 800 MHz
- ACLR better than -50 dBc with DPD
- ADC/DAC sampling rates up to 19.6 GS/s
- 32T32R8FB primary SKU, with 16T16R4FB and 8T8R2FB options
Vijay Janapaty, vice president and general manager of Broadcom’s Physical Layer Products Division, said the BroadPeak SoC “integrates DFE and AFE with high-linearity data converters at 8.5 GHz, delivering up to 40% greater efficiency for next-generation base stations.”
🌐 Analysis: Broadcom’s move into 6 GHz and upper mid-band 6G spectrum aligns with operator roadmaps that emphasize higher-capacity spectrum to support AI-driven traffic growth and densified massive MIMO architectures. By integrating DFE and high-speed data converters on 5nm CMOS, Broadcom aims to reduce board-level complexity and power budgets in active antenna units, a key cost driver in large-scale RAN deployments.
The announcement also reinforces Broadcom’s continued investment in physical-layer silicon alongside its data center and switching portfolio. As competitors such as Qualcomm, Marvell, and dedicated RAN silicon vendors advance 5G Advanced and Open RAN platforms, power efficiency and integration at higher frequencies will likely become primary differentiation factors for next-generation radio units.
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