10 07, 2019

Constellation Diagrams: The Fault in Our Stars

By |2019-07-11T19:18:28+00:00July 10th, 2019|Design Innovation, Uncategorized|

Constellation diagrams are 2D graphical representations of digitally modulated signals.  They are used for the display and analysis of digitally modulated waveforms, and provide valuable insight into the performance of a digital communication system. Digitally modulated signals encode information within a sinusoidal carrier wave by mixing it with a discretized message signal, therefore modifying the [...]

14 02, 2019

Balancing Linearity and Efficiency in a Power Amplifier

By |2019-04-17T18:49:35+00:00February 14th, 2019|Design Innovation, Uncategorized|

Achieving both high linearity and high efficiency together in a Radio Frequency (RF) Power Amplifier (PA) system is challenging. Typical designs for highly efficient PAs (i.e., greater than 40% DC power efficiency) involve operating devices in their non-linear range, i.e., at or near compression (saturation). A PA operating in its nonlinear region inherently creates distortion [...]