A Custom Approach to Large Capacitor Assembly

Posted by Steve Hopwood on Oct 13, 2021 9:00:00 AM

Achieving high capacitance means going big. But how do you do that while still maximizing board space? At Knowles Precision Devices, we’ve developed a new method for building customizable large capacitor assemblies that capitalize on the vertical space above the circuit board. While stacked capacitor assemblies have been around for many years, these parts do not have very good bump and vibration withstand due to the thin leads used in their construction. These new assemblies from Knowles Precision Devices offer a ruggedized construction capable of withstanding high levels of shock and vibration. This offers a unique combination of capability, durability, high capacitance, and very high voltage in a smaller area, making these capacitors ideal for automotive, military, and aerospace applications.

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Topics: Capacitor, Automotive, Military and Aerospace, High Reliability

Webinar: RF Components in Emerging SATCOM Applications

Posted by Peter Matthews on Oct 6, 2021 9:00:00 AM

In recent years, the focus for satellite communication (SATCOM) applications has shifted from coverage to capacity. As a result, SATCOM devices are being pushed to operate at higher bandwidths in the Ka, V, and E bands. At the same time, these devices need to be made increasingly smaller, which means smallsats, or satellites weighing less than 500 kg, are quickly gaining momentum, making size, weight, and power (SWaP) critical design considerations as well.

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Topics: RF and Microwave, Military and Aerospace, Filtering

Live Webinar: Exploring the Impacts of Today’s SATCOM Industry Trends on Tomorrow’s RF Architecture Designs

Posted by Peter Matthews on Sep 1, 2021 8:00:00 AM

Mark your calendars for Tuesday, September 14th at 11 am EDT, for our new live webinar - Exploring the Impacts of Today’s SATCOM Industry Trends on Tomorrow’s RF Architecture Designs - presented in conjunction with Microwave Journal.

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Topics: RF and Microwave, Military and Aerospace

Making a Reduced Form Factor, High-Performance Switch Filter Bank a Reality

Posted by Jared Burdick on Aug 18, 2021 9:00:00 AM

Many critical military operations around the world are increasingly relying on a variety of electronic warfare devices for a range of threat suppression, detection, and neutralization activities. This means that numerous devices operating across the RF spectrum including low-frequency devices in the VHF band and mmWave devices in the Ka band are necessary. As shown in Figure 1, when many electronic warfare devices are in use, a large number of signals are being sent and received and crossing paths. Therefore, it’s easy for any one of these devices to experience issues with interference if proper filtering techniques are not in place.

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Topics: RF and Microwave, Military and Aerospace, Filtering

Build-to-Print Basics Part 15: Military and Space Grade Applications

Posted by Tim Bice on Jul 28, 2021 9:00:00 AM

To provide a better understanding of build-to-print in general and the breadth of our offerings, as well as how our thin-film technology can benefit your applications, we’ve put together a Build-to-Print Basics series. In this final post of our Build-to-Print Basics series, we discuss the quality standards we follow to ensure our components are qualified for military and space grade applications as well as the additional testing or spec design we can perform as needed by our customers.

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Topics: Military and Aerospace, Build to Print

Fully Digital Beamforming – An Excellent Option for Emerging Military Applications

Posted by Peter Matthews on Jul 14, 2021 9:00:00 AM

As early adopters of beamforming technology in the 1960s, aerospace and defense organizations have a lot of experience using the initial large-scale active electronically scanned arrays (AESAs) for military radar tracking applications. But these arrays aren’t as convenient for some applications today as the operational frequencies of the targets of interest for many military applications are increasing. This means the wavelengths of the signals that need to be monitored are getting shorter and these radar applications need denser arrays since antenna spacing needs to be set at one half the wavelength. For example, at 25GHz, the wavelength in free space is approximately 12mm (0.47”), leading to half-wave spacing for antennas of 6mm (0.24”). Also, as arrays become denser, the new challenge for RF system designers is avoiding interference in these tighter spaces, especially when transmitting signals.

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Topics: Military and Aerospace, Filtering

Webinar: Addressing Filtering Challenges in Digital Broadband Receivers for Electronic Warfare Applications

Posted by Tim Brauner on Jun 30, 2021 9:00:00 AM

Today, electronic warfare applications need to detect a wide variety of signals ranging from UHF communications to GPS and other data signals in the L band to high-frequency radar signals that can fall in the X, S, or K bands. Therefore, these receivers need to operate across an extremely wide range of bandwidths to pick up and understand signals anywhere from 300MHz to 20GHz and beyond. However, a basic general wideband antenna isn’t sufficient for these applications because selectivity is needed to determine what you are actually listening to. Additionally, as if the task of designing an ultra-wideband receiver with selectivity wasn’t challenging enough, RF designers are simultaneously facing pressure to reduce the size, weight, and power (SWaP) of these applications as well.

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Topics: RF and Microwave, Military and Aerospace, Filtering

Detonation Capacitors and EFI

Posted by Victor Lu on Jun 23, 2021 8:00:00 AM

Explosives are dangerous by design. For applications involving detonation, like munition and down-hole exploration, explosives should be built to avoid unintentional or premature detonation caused by any rise in temperature or shock. These applications require a number of specialty components including capacitors that discharge high energy at temperatures up to 200°C.

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Topics: Military and Aerospace

Live Webinar: Addressing Filtering Challenges in Digital Broadband Receivers for Electronic Warfare Applications

Posted by Tim Brauner on Apr 28, 2021 9:00:00 AM

Mark your calendars for Thursday, May 13 at 11 AM EDT to join Knowles Precision Devices, Microwave Journal, and RFMW for a live webinar where we will discuss the filtering challenges for digital broadband receivers in electronic warfare applications.

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Topics: RF and Microwave, Military and Aerospace, Filtering

An Innovative Phased Array Filtering Approach

Posted by Greg Alton on Apr 21, 2021 9:00:00 AM

As the RF spectrum becomes more crowded and the number of bandwidth battles grows each year, RF designers are looking for innovative designs that minimize interference while also increasing signal transmission power. Since phased arrays can efficiently maximize gain and signal directivity and minimize interference for both Tx and Rx, adoption of this architecture by RF designers is growing. This means RF designers are also on a quest for phased array filtering options that can help meet the size, weight, and power (SWaP) needs and performance demands required by today’s RF applications. As a result, our engineers have spent a significant amount of time working on an innovative approach that can meet this seemingly impossible combination of requirements.

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Topics: 5G, RF and Microwave, Military and Aerospace, Filtering

Insights Into Precision Passive Devices

Knowles Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of Compex, DLI, Johanson MFG, Novacap, Syfer and Voltronics, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

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  • Filters for 5G and mmWave
  • Capacitors for High Voltage
  • Capacitors for High Reliability

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