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New HEMT RF Power Devices Help Create Smaller and Lighter Amplifier Circuits

25 August 2017

Source: WolfspeedSource: Wolfspeed

Wolfspeed has extended its family of 50 V unmatched GaN HEMT RF power devices by adding a 250 W part with a frequency range up to 3.0 GHz. This device enables RF design engineers to take fewer components to design smaller and lighter amplifier circuits for commercial and military wireless communications and S-band radar applications.

The new 50 V GaN HEMT devices have a combination of high power and high gain with high-efficiency operation. This makes it possible for RF design engineers to replace several lower-power GaN HEMTs or multiple silicon LDMOS devices with a single device in the power amplifier designs. Packaged in a four-leaded metal-flanged ceramic “Gemini” package, the new 250 W GaN HEMTs operate efficiently at full-rated power. This reduces the need for complex thermal management systems.

The higher power and efficiency rating combined with a frequency range up to 3.0 Ghz makes the devices ideal for a wide range of RF linear and compressed amplifier circuits. This includes those for military communication systems, radar equipment (UHF, L-, S-band), electronics warfare (EW) systems, as well as RF applications in the industrial, medical and scientific (ISM) band.

The CGHV40200PP is a 50 V unmatched GaN HEMT device rated for 250 W, 3.0 GHz operation with 67 percent efficiency and 21 dB small signal gain at 1.8 GHz.

Wolfspeed’s GaN-on-SiC RF devices deliver high breakdown voltage, high-temperature operations, high efficiency, high thermal conductivity, high power density and wide bandwidth. All of these are critical for achieving smaller, lighter and more efficient microwave and RF products. Wolfspeed™ GaN-on-SiC RF devices enable next-generation broadband, public safety and ISM (industrial, scientific and medical) amplifiers, broadcast, satellite and tactical communications amplifiers, UAV data links, test instrumentation and two-way private radios.

The CGHV40200PP GaN HEMTs are now in volume production and are currently available from Wolfspeed distributors Digi-Key and Mouser. Wolfspeed RF devices are supported by proprietary Large Signal Models, available at portal.cree.com.

For more information on the CGH40200PP devices, visit Wolfspeed.

To contact the author of this article, email Siobhan.Treacy@ieeeglobalspec.com


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