NXP
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Gallium Nitride + MCM = More 5G Efficiency

June 28, 2021
Greater efficiency, reduced size and weight, and the marriage of multiple technologies lets NXP’s GaN MCMs help get 5G networks designed and deployed in less time.

By adding gallium-nitride (GaN) technology to its multichip-module (MCM) platform, NXP has hit a significant milestone for 5G energy efficiency. Building on the company’s investment in its highly advanced GaN fab in Arizona, NXP is the first to announce RF solutions for 5G massive MIMO that combine the high efficiency of GaN with the compactness of multi-chip modules.

Reducing energy consumption is a major goal for telecom infrastructure, where every point of efficiency counts. The use of GaN in multi-chip modules increases lineup efficiency to 52% at 2.6 GHz—8% higher than the company’s previous module generation. NXP has further improved performance with a proprietary combination of LDMOS and GaN in a single device, exploiting GaN’s inherent wideband performance to achieve 400 MHz of instantaneous bandwidth. As a result, it’s now possible to design wideband radios with a single power amplifier.

This energy efficiency and wideband performance are now available in the small footprint of NXP’s 5G multi-chip modules. The new portfolio will enable RF developers to reduce the size and weight of radio units, helping mobile network operators lower the cost of deploying 5G on cellular towers and rooftops. In a single package, the modules integrate a multi-stage transmit chain, 50-Ω in/out matching networks, and a Doherty splitter/combiner. NXP is also adding bias control using its latest SiGe technology. This new step in integration removes the need for a separate analog control IC and provides tighter monitoring and optimization of power-amplifier performance.

“NXP has developed a unique technology toolbox dedicated to 5G infrastructure that includes proprietary LDMOS, GaN and SiGe, as well as advanced packaging and RF design IP,” said Paul Hart, executive vice president and general manager of the Radio Power Business Line at NXP. “This enables us to leverage the benefits of each element and combine them in the most optimal way for each use case.”

Like the previous module generation, the new devices are pin-to-pin compatible. RF engineers can rapidly scale a single power-amplifier design across multiple frequency bands and power levels, reducing design cycle time and accelerating the roll-out of 5G around the globe.

NXP’s new 5G multi-chip modules will sample in Q3, with production starting later this year. The devices will be supported by NXP’s new RapidRF series of RF front-end board designs that helps accelerate the design of 5G systems.

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