Efficiency Is Everything

Feb. 11, 2010
Latest-generation cellular networks, such as Long Term Evolution (LTE), are literally pushing the envelope for power amplifier designers. Such engineers face the unenviable task of not only developing circuits that can boost highly modulated signals with ...

Latest-generation cellular networks, such as Long Term Evolution (LTE), are literally pushing the envelope for power amplifier designers. Such engineers face the unenviable task of not only developing circuits that can boost highly modulated signals with minimum distortion, but do it in such a way that the conversion of bias energy to RF output power is at a maximum. These obsessions with amplifier efficiency make perfect sense when dealing with small, battery-powered mobile devices, but why apply the same stringent requirements to amplifiers mounted on a tower or in a cellular base station?

According to network providers, the future of many of these fourth-generation (4G) wireless networks depends on higher-efficiency power amplifiers. Not only does an efficient amplifier consume less power for a given output-power level, it also generates less heat, with less energy and effort required to keep the overall system running at safe thermal levels (with its implied higher reliability). Of course, with any design goal there is a point of diminishing returns but, for now (as the story on Nujira and RFMD shows), this is a time to enjoy some innovative approaches to higher power amplifier efficiency.

Sponsored Recommendations

Designing Wireless Modular Robots Using Advanced 3D Printing Precision

March 28, 2024
Learn how researchers at Southern Methodist University used 3D printing to fabricate wireless modular robots.

Microelectromechanical 3D Printing Resources

March 28, 2024
Check out our curated list of microelectromechanical 3D printing resources and see how PµSL technology offers freedom and speed.

Understanding 3D Printing Tolerances: A Guide to Achieving Precision in Additive Manufacturing

March 28, 2024
In the world of additive manufacturing, precision is paramount. One crucial aspect of ensuring precision in 3D printing is understanding tolerances. In this article, we’ll explore...

Micro 3D Printing Helps Fabricate Microwells for Microgravity

March 28, 2024
Learn how micro 3D printing helped to fabricate miniaturized vessels called hydrowells for culturing 3D cellular spheroids for microgravity.