Peter Matthews

Peter Matthews
Peter Matthews is Director of Technical Marketing at Knowles Precision Devices. As a division of Knowles Corporation, Knowles Precision Devices (KPD) focuses on production of a wide variety of highly engineered capacitors and microwave to millimeter-wave components for use in critical applications in military, medical, electric vehicle, and 5G market segments. Peter has over 20 years of experience in technology sales, marketing, and product management.

Recent Posts

Supercapacitors vs. Batteries: A Comparison in Energy Storage Solutions

Posted by Peter Matthews on Sep 18, 2024 8:15:00 AM

Supercapacitors feature unique characteristics that set them apart from traditional batteries in energy storage applications. Unlike batteries, which store energy through chemical reactions, supercapacitors store energy electrostatically, enabling rapid charge/discharge cycles. In certain applications, this gives them a significant advantage in terms of power density, lifespan, efficiency, operating temperature range and sustainability.  

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Topics: Capacitor

Enhancing Radar Performance: The Role of Gain Equalizers in RF Receivers

Posted by Peter Matthews on Sep 11, 2024 8:00:00 AM

Low-noise amplifiers (LNAs) in radio frequency (RF) receivers are designed to amplify low-amplitude signals (i.e., less than -100 dBm) from an antenna without decreasing their signal-to-noise ratio (SNR). In radar applications, a strong SNR increases the likelihood of detecting a target, so LNAs play an important functional role (Figure 1). Effective targeting requires both high resolution and high accuracy. A strong SNR translates to high accuracy.  

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Capacitors for External Defibrillators

Posted by Peter Matthews on Aug 28, 2024 8:17:00 AM

Defibrillators are designed to deliver electric current to the heart, in the form of a controlled shock to the myocardium, to treat arrhythmias and restore the heartbeat back to normal. Capacitors play an important role in the function of these life-saving devices. Here, we’ll cover the basic components of a defibrillator circuit and explore the role of capacitor selection in defibrillator system design. 

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Supercapacitors: A Key Technology for Driving Modern Logistics

Posted by Peter Matthews on Aug 7, 2024 8:15:00 AM

As consumers demand rapid, and accurate, delivery of online orders, yet labor shortages continue to prevail, distributors need to increase efficiency and productivity, reduce errors, and improve inventory management in their warehouses. To do this, distributors must modernize warehouse logistics by creating smart warehouses that incorporate technologies such as automated guided vehicles (AGVs), automated mobile robotics (AMRs), IIoT sensors, drones, and/or robotic arms. Using these technologies, distributors can streamline operations by automating and accelerating tasks such as order picking, inventory replenishment, automated storage and retrieval, and goods transportation.

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Selecting Capacitors for Charge Storage in Radar Power Amplifiers

Posted by Peter Matthews on Jul 31, 2024 8:15:00 AM

The types of threats facing radar systems are continuing to diversify. To adapt, the industry is evolving toward fully digital arrays that can support a variety of mission profiles. As these systems grow more and more complex, component-level decisions have an increasingly significant impact on overall performance.   

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Topics: Capacitor

The Role of EMI Filters in Power Electronics

Posted by Peter Matthews on Jul 24, 2024 8:15:00 AM

As power conversion systems evolve to leverage higher voltages and wide bandgap semiconductors like silicon carbide (SiC) and gallium nitride (GaN), system designers face new challenges in managing the electromagnetic interference (EMI) frequency landscape. Here’s how EMI filters play an important role in ensuring safe operation at higher voltages. 

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Topics: Capacitor

Capacitors Support Radar MMIC Amplifiers via Bypassing

Posted by Peter Matthews on Jul 17, 2024 8:15:00 AM

Monolithic microwave integrated circuit (MMIC) amplifiers are widely used in defense radar systems. The industry recognizes them as a compact, high-performance option that’s reliable and easy to integrate. Whether they serve a receive (e.g., low noise amplifier (LNA)) or transmit (e.g., power amplifier (PA)) function, MMIC amplifiers rely on bypass capacitors to perform their core function to amplify microwave signals. 

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Topics: Capacitor

Looking Closer at DC Link Capacitors in Electric Vehicles

Posted by Peter Matthews on Jul 3, 2024 8:44:22 AM

DC link capacitors are commonly used in power converters as an intermediary buffer between an input source to an output load that have different instantaneous power, voltages, and frequencies. In electric vehicle (EV) applications, DC link capacitors help offset the effects of inductance in inverters, motor controllers, and battery systems. They also serve as filters that protect EV subsystems from voltage spikes, surges, and electromagnetic interference (EMI).

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Topics: Capacitor, Automotive, Electric Vehicles

Trends in Battery Energy Storage Systems

Posted by Peter Matthews on Jun 26, 2024 8:15:00 AM

Battery energy storage systems (BESS) are named for their function. They capture, accumulate, and store energy in rechargeable batteries to be discharged later. Industrial facilities, homes, electric vehicles (EVs) and the like rely on these systems for backup power and operational efficiency.

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Common Capacitors in Solar Power Conversion Systems

Posted by Peter Matthews on Jun 20, 2024 8:02:00 AM

Ongoing innovation in solar power electronics and rising interest in photovoltaic (PV) installations underscores the importance of robust and efficient electronic components. Capacitors play a key role in power conversion systems as they function to smooth and regulate power flow, protect against voltage surges and filter unwanted signals. 

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Topics: Capacitor

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.

This Blog will provide insights into:

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

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