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Cree GaN-on-SiC power amplifiers combine with MaxLinear linearization technology to efficiently enable new ultra-wideband 5G

Durham, North Carolina, July 5, 2021 – Cree, Inc. (Nasdaq: CREE), a global leader in silicon carbide technology, recently announced a partnership with MaxLinear, Inc. . (NYSE: MXL) successful cooperation. MaxLinear is a leading supplier of radio frequency (RF), analog, digital and mixed-signal integrated circuits. This successful collaboration combines Cree Wolfspeed® gallium nitride on silicon carbide (GaN-on-SiC) mid-frequency power amplifiers with MaxLinear ultra-wideband linearization solutions (MaxLin) for breakthrough performance. This new solution increases the wireless capacity of 5G base stations, supports more concurrent users and increases data transfer speeds.

Cree GaN-on-SiC power amplifiers combine with MaxLinear linearization technology to efficiently enable new ultra-wideband 5G

The adoption of GaN-on-SiC and highly efficient linearization technology can enable higher efficiency wireless transmission, resulting in significant power, cooling and cost savings, thereby accelerating the deployment of 5G. Cree’s high-efficiency GaN-on-SiC power amplifiers complement MaxLinear’s highly efficient linearization solutions to save hundreds of watts of power consumption for the massive MIMO radios required for 5G applications.

“Our GaN-on-SiC power amplifiers are optimized to achieve high efficiency and extremely wide transients in a very small form factor in the newly released 5G spectrum,” said Gerhard Wolf, senior vice president and general manager of RF, Cree | Wolfspeed. Bandwidth. This technology, combined with MaxLinear’s solution, is an important step forward in achieving outstanding linearization performance and will help wireless providers deliver superior performance and service to mobile customers.”

The new solution addresses an important industry challenge: enabling RF units with 5G massive MIMO arrays (e.g. 64×64 or 32×32) while maintaining reasonable size, weight and power. The new 5G spectrum has higher carrier frequencies and wider bandwidths, making it harder to achieve high power efficiency for RF units.

Helen Kim, vice president of wireless technology and IP at MaxLinear, said: “We are working hard to solve the important challenges of 5G radio. Customers need to find a way to provide mid-band 5G capacity without the corresponding increase in cost and power. Our broadband, high power efficiency The linearization solution and low-power 400MHz transceiver can significantly reduce heat dissipation in massive MIMO arrays, enabling thinner, lower-cost RF solutions.”

Using GaN-on-SiC, MaxLinear solutions provide breakthrough linearity for 280 MHz channels supporting US 5G spectrum (3.7-3.98GHz) and 400 MHz channels supporting Asian and European 5G mid-band spectrum (3.4-3.8GHz) performance. Under the instantaneous bandwidth of 280MHz, the Cree WS1A3940 power amplifier achieves about 50% efficiency at 39.5dBm average output power, the MaxLinear MxL1600 transceiver provides a sampling rate of 983MSPS, and the MaxLin improves linearity by more than 20dB, exceeding 3rd Generation Partnership Project (3GPP) and Federal Communications Commission (FCC) requirements, with margins. Using the Wolfspeed WS1A3640 power amplifier, MaxLin also demonstrated >20dB linearization improvement at 400MHz instantaneous bandwidth.

Cree WS1A3940 and WS1A3640 GaN-on-SiC power amplifier modules, MaxLinear MxL15xx and MxL16xx 400MHz transceivers, and MaxLin linearization technology are solutions that support both traditional RAN and open RAN innovation.

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