Nitronex claims world's smallest broadband 5-W PA solution

June 07, 2011 // By Paul Buckley
Nitronex has developed what the company claims is the industry's smallest broadband 5 W power amplifier solution. The NPA1003, the GaN PA MMIC features a 4 mm x 4 mm thermally-enhanced QFN package with RF input and output matched to 50 ohms. The highly integrated NPA1003 GaN MMIC only requires an external resistor and inductor to provide bias. With output power more than 5W from 20 to 1500MHz and typical efficiency of over 50%, the overall solution size is less than 0.25 square inches, smaller than any competing solution.

Nitronex's qualified MMIC process is based on a 28 V, 0.5 µm gate length GaN HEMT and features high voltage capacitors, air bridges, through-wafer vias, nichrome and epi resistors, and two levels of metal interconnect. A 3.5 µm plated gold top metallization results in low loss inductors, and a high resistivity silicon substrate is used which supports low loss transmission lines to over 20 GHz.

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