Nitronex's Gan-on-Si Broadband Doherty Power Amplifier Enhances Efficiency and Bandwidth for Wimax Applications
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Broadband WiMAX Doherty power amplifier reference design available...
CHICAGO - WiMAX World USA, Booth 915, (September 26, 2007) - Nitronex, an innovative developer and manufacturer of high-performance RF power transistors for the commercial and broadband wireless infrastructure markets, has partnered with Prescient Wireless to design a GaN-on-Si broadband Doherty power amplifier for WiMAX applications. Based on Nitronex's existing NPT25015 power transistor, the design provides 6W of linear output power from 2.5 to 2.7GHz while achieving >35% efficiency, 10dB gain, and <2.0% EVM with digital pre-distortion.
"The inherent low output capacitance and high efficiency of GaN-on-Si are a natural fit for the Doherty architecture. Carriers are asking for higher efficiency and broader bandwidth at the same time. It is exciting to achieve industry leading results that directly apply to their problem statement," said Ray Crampton, Marketing Director at Nitronex. "We are currently collaborating with Prescient Wireless on a reference design based on our 125W NPT25100. Preliminary results show a similar level of performance is achievable at much higher output powers."
Typical performance numbers were taken using a mobile WiMAX waveform defined as a single carrier OFDMA 64-QAM ¾ with a 10MHz channel bandwidth. 6 Watts of output power is achieved with a 9.5dB PAR @ .01% probability on the CCDF during the transmit portion of a 50% duty cycle TTD signal.
The reference design consists of the schematic, bill of materials, circuit board layout files, detailed performance data, and documentation describing the design. Built and tested Doherty application boards are available for a suggested resale price of $1950. Reference design documentation and other information are available on the Nitronex Web site at www.nitronex.com. Both this reference design and a design based on the 125W NPT25100 with preliminary results will be on display at the Nitronex booth (#915) at WiMAX World USA in Chicago, IL, Sept. 25-27.
For more information about Nitronex's GaN on Si broadband Doherty power amplifiers, contact Nitronex at 2305 Presidential Drive, Durham, NC 27703; call 919-807-9100; or e-mail info@nitronex.com.
About Nitronex
Specializing in the development and manufacturing of gallium nitride (GaN) RF power devices, Nitronex is the global leader in high-performance GaN on silicon (GaN on Si) RF power transistors for the commercial wireless infrastructure, broadband and military markets. Based on its patented SIGANTIC® process - gallium nitride on silicon technology - Nitronex is at the forefront of commercializing GaN technology for RF applications. The company's ability to combine the disciplines of material growth, wafer processing, device design and wireless applications knowledge is unique to the industry.
Nitronex was founded in 1999 by graduates of the wide bandgap program at North Carolina State University and is headquartered in Durham, North Carolina. It holds 19 patents with 19 others pending.
About Prescient Wireless
Prescient Wireless is an established supplier of RF products and design services to the wireless and avionics industries. With extensive commercial experience in Base Station and RF subsystem architecture, design and manufacture, Prescient Wireless is well positioned to meet the needs of the emerging WiMAX market. Prescient's initial WiMAX product, the PW1100A Radio Development Platform, is a highly flexible OBSAI RP3-01 compliant rack mount 2x2 RRH that is targeted for lab and development use.
Prescient Wireless was established as an independent company in early 2006 via a spin off from a leading subsystem supplier.
For more information about Prescient Wireless products and services contact Prescient Wireless at 300 Park Boulevard, Suite 260, Itasca, IL 60143; call 630-775-1000; or e-mail info@prescientwireless.com; or visit our website www.prescientwireless.com
For more information, contact:
Ray Crampton
Director of Marketing
919-424-5175
rcrampton@nitronex.com
Kara Thompson
Sales and Marketing Assistant
919-424-5222
kthompson@nitronex.com
