27 11, 2019

Spectral Regrowth: Stay in Your Lane

By |2020-01-22T13:53:01+00:00November 27th, 2019|RF Amplifier, RF Design, Testing, Uncategorized|

Modern communication systems are typically based on a framework of channels, where the frequency spectrum is divided into channels of a defined bandwidth and each signal is assigned to a particular channel.  This is analogous to a highway system being divided into lanes.  On a highway, it is undesirable for a car to cross into [...]

30 10, 2019

Why Gallium Nitride (GaN)?

By |2020-01-22T13:54:06+00:00October 30th, 2019|Uncategorized|

GaN technology has been improving radio frequency (RF) systems since the early 1990’s. It’s ability to support high frequency, wide bandwidths, and high-power density make it invaluable in any market requiring high performance in a small form factor. When compared with other semiconductor technologies such as Gallium Arsenide (GaAs), Laterally Diffused Metal Oxide (LDMOS), and [...]

10 07, 2019

Constellation Diagrams: The Fault in Our Stars

By |2020-01-22T13:55:49+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 |2020-01-22T13:56:45+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 [...]