100-W GaN-On-Si Transistor Targets WiMAX

June 13, 2007
The market for 2.5-GHz WiMAX solutions is growing rapidly, thereby inspiring a legion of new products. One example is a 28-V, 100-W gallium-nitride (GaN), high-electron mobility transistor (HEMT). The NPT25100 GaN-on-silicon (Si) power transistor is ...

The market for 2.5-GHz WiMAX solutions is growing rapidly, thereby inspiring a legion of new products. One example is a 28-V, 100-W gallium-nitride (GaN), high-electron mobility transistor (HEMT). The NPT25100 GaN-on-silicon (Si) power transistor is designed specifically for 2.3-to-2.7-GHz WiMAX applications. Typical performance is rated using a mobile WiMAX waveform, which is defined as a single-carrier, orthogonal-frequency-division-multiplexing (OFDM) signal with 64-state quadrature amplitude modulation (64-QAM), 3.5-MHz channel bandwidth, and 10.3 dB peak-to-average power ratio (PAR) with the PAR at a 0.01-percent Complementary Cumulative Distribution Function (CCDF). Under these test conditions, the NPT25100 will deliver 14.5 dB of gain (typical), 21 percent efficiency, and less than 2.5 percent error vector magnitude (EVM)—all at more than 10 W of power. The transistor is packaged in a thermally enhanced, copper moly copper package. P&A: Samples and application boards will be available starting in June. Full production qualification is expected in July. The suggested price for 1000 pieces is $90.

Nitronex, 2305 Presidential Dr., Durham, NC 27703; (919) 807-9100, Internet: www.nitronex.com

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About the Author

Nancy Friedrich | RF Product Marketing Manager for Aerospace Defense, Keysight Technologies

Nancy Friedrich is RF Product Marketing Manager for Aerospace Defense at Keysight Technologies. Nancy Friedrich started a career in engineering media about two decades ago with a stint editing copy and writing news for Electronic Design. A few years later, she began writing full time as technology editor at Wireless Systems Design. In 2005, Nancy was named editor-in-chief of Microwaves & RF, a position she held (along with other positions as group content head) until 2018. Nancy then moved to a position at UBM, where she was editor-in-chief of Design News and content director for tradeshows including DesignCon, ESC, and the Smart Manufacturing shows.

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