17 02, 2020

Internet From The Stars: 21st Century Space Race

By |2020-02-13T14:36:03+00:00February 17th, 2020|Design Innovation, Leadership Insight, Product Development|

Two weeks ago, SpaceX launched it’s third successful mission placing 60 more Starlink satellites into low earth orbit, bringing the total number of global internet powering satellites to 180. That is far from the planned system completion threshold of 12,000, but it does establish that SpaceX has the formula down and isn’t going to stop [...]

31 01, 2020

Which Filter Response Type Is Best For My Application?

By |2020-02-05T16:04:22+00:00January 31st, 2020|RF Amplifier, RF Design, RF Filters|

Why is RF filtering so important? Simply put, filters reduce the interference in the environment that affects the performance of the communication system and reduce the interference caused by the communication system. Once you have identified the system level need for a filter, it’s now time to determine which filter response type will accommodate your [...]

3 01, 2020

The Benefits of a Tunable RF Filter

By |2020-02-18T18:37:54+00:00January 3rd, 2020|Product Development, RF Filters|

Filters are a staple of RF designers everywhere, and especially in applications where the integrity of the signal cannot be compromised. When you’re only concerned about a single frequency, it’s relatively easy to add in a fixed-tuned filter.  However, it becomes slightly more difficult when you need to cover multiple frequencies and can’t just utilize [...]

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 [...]

11 11, 2019

For Some Veterans the Battle has Followed them Home

By |2020-01-22T13:53:48+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 |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 [...]

16 10, 2019

Multifunction RF Power Amplifiers for Space Applications

By |2020-01-22T13:54:21+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 |2020-01-22T13:54:36+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 |2020-01-22T13:54:48+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 |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 [...]