A Novel Independently Biased 3-Stack GaN HEMT Configuration for Efficient Design of Microwave Amplifiers

High Efficiency, High Linearity GaN HEMT Amplifiers for WiMAX Applications

Worldwide Interoperability for M i c r o w a v e Access, better known as WiMAX, is a standardsbased wireless technology for providing highspeed, last-mile broadband connectivity to homes and businesses as well as for mobile wireless networks. With the fixed version of WiMAX, based on IEEE 802.16-2004, transmissions can potentially carry data traffic over more than 30 miles (~50 km) in rural are...

Development of GaN HEMT for Microwave Wireless Communications

Gallium Nitride (GaN) devices are desirable for the application of high-power and high-speed operation electron devices because of their excellent properties such as large energy band gap and high saturated electron velocity. We have already developed and produced GaN HEMTs*1 on SiC substrate targeting the frequency range of L/S-band mainly for the amplifier used in cellular base stations. The ...

Analysis & Design of Non-Linear Amplifiers for Efficient Microwave Transmitters

Design of class E power amplifiers by using scalable electro-thermal GaN HEMT model

In this paper, a scalable large signal GaN HEMT model including nonlinear thermal sub-circuit is described. Only two scalable parameters are needed in the Ids scalable model by introducing a simple correction factor. The established model can predict the I–V curves at different-in-size AlGaN/GaN HEMTs devices accurately. Small signal S-parameters and large signal load pull tests with on-wafer m...

Highly efficient 2.7-2.9GHz class-F and inverse class-F power amplifiers in GaN HEMT technology

In this letter, novel class-F and inverse class-F power amplifier (PA) topologies were proposed, simulated, realized and measured for 2.7–2.9GHz frequency band by using Gallium Nitride high electron mobility transistor (GaN HEMT). Realizations are made on Rogers TMM3 dielectric material which has 0.381mm thickness and 3.27 dielectric constant. Proposed class-F and inverse class-F PAs have 10W (...