11 11, 2019

For Some Veterans the Battle has Followed them Home

By |2019-11-04T14:45:00+00:00November 11th, 2019|Leadership Insight|

I recently had the pleasure of assisting in the leadership of an event that was aimed at building community among the local population of military veterans in the Cincinnati region. The event was an absolute success, and it reinforced in me the positive and fun environment that can be found when a group of around [...]

30 10, 2019

Why Gallium Nitride (GaN)?

By |2019-10-09T15:28:58+00:00October 30th, 2019|Design Innovation, RF Amplifier, RF Design|

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 [...]

16 10, 2019

Multifunction RF Power Amplifiers for Space Applications

By |2019-10-14T12:25:44+00:00October 16th, 2019|RF Amplifier, RF Design, RF Front End|

NASA envisions that data throughput and size, weight, and power consumption (SWaP) requirements levied on future space exploration vehicles due to resource constraints will necessitate that a different approach is taken for communications and radar. Rather than employing individual systems for short-range communications, long-range communications, and radar, respectively, a common architecture would need to be [...]

2 10, 2019

High Power Switched Filter Bank Options for RF Communications and Electronic Warfare (EW) Applications

By |2019-09-26T20:21:42+00:00October 2nd, 2019|Design Innovation, RF Amplifier, RF Filters|

A Switched Filter Bank is a device that combines switches and filters to provide user-selectable frequency channels. Switched filter banks are beneficial to Radio Frequency (RF) communication systems and are utilized in both receivers and transmitters to reduce signal interference from harmonics, spurious emissions, strong signal interferers, and to limit noise power for optimized system [...]

11 09, 2019

MMICs vs. Discrete Circuits, What Are the Trade-Offs?

By |2019-09-17T13:39:49+00:00September 11th, 2019|RF Amplifier|

One of the major decisions that a Power Amplifier (PA) Module designer must make in the development process is the choice of architecture that they will utilize in the amplification circuit. The two most widely used options are to pursue a Monolithic Microwaves Integrated Circuit (MMIC) or to design around discrete components. Each of these [...]

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 [...]

12 06, 2019

How Wireless RF and Microwaves Affect the World Around You

By |2019-06-12T15:17:53+00:00June 12th, 2019|Design Innovation, RF Design|

Radio wave applications have come a long way since it was first theorized by James Clark Maxwell in his 1873 work “A Treatise on Electricity and Magnetism”, where he laid out mathematical theories showing the potential applications of radio technology. Only fifteen years later, German Physicist Heinrich Hertz became the first person to produce, transmit, [...]

2 05, 2019

Extending the Range of a Low Power UAV Radio

By |2019-05-13T12:50:41+00:00May 2nd, 2019|Design Innovation, Product Development|

Low-power UAV radio systems, though designed for short distance communications, can be an inexpensive and reliable means of communications over greater distances – especially when the application is small UAS platforms. Many of these radios come with a variety of options including programmable bandwidths, RF power settings, and modulation type. Usually the bandwidth and modulation [...]

2 05, 2019

Cost Effective Full-Duplex Systems Utilizing a Semi-Custom Approach

By |2019-05-02T18:25:16+00:00May 2nd, 2019|Design Innovation, Product Development|

The requirements of modern datalinks in the UAV and large airframe market present challenges for systems designers. Many modern communication systems often require full-duplex operation, and several systems may be operating on a single airframe. At the same time size, aerodynamic and radar signature concerns can limit the ability of designers and integrators to add [...]

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 [...]