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Interference Technology

For EMI / EMC Engineers

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Amplifers

Field Generation Test System Fully-Shielded To Prevent EMI Interference

 

AR RF/Microwave Instrumentation has designed a complete field generation test system that is fully shielded, making it ideal for use in an anechoic chamber without being susceptible to or causing interference.Model AS18013 houses a variety of field generation equipment in two air-conditioned EMI-shielded equipment racks. Among the included equipment is the SC1000M3 system … [Read more...]

Spectrum Analyzers Add 8 GHz Tracking Generator Option

 

Small, low cost, and lightweight, the Aeroflex 3250 Series spectrum analyzers now include an optional 8 GHz tracking generator. Ideal for any kind of bench or lab environment, the new 3250 Series tracking generator has a frequency range of 100 kHz to 8 GHz and a level range from 0 dB down to -20 dB. An adjustable output level, with a setting resolution of 0.5 dB, provides … [Read more...]

500 Volt, High Q MLCC with Base Metal Electrodes

 

Murata Electronics North America recently introduced the GQM22 series, a 500 volt-rated, high Q monolithic ceramic capacitor (MLCC) with base metal electrodes. Ideal for high frequency applications such as power amplifiers for base stations, the advanced capacitor also provides low equivalent series resistance (ESR).Developed using Murata’s new base metals technology and … [Read more...]

11-18 GHz 450W TWT Amplifier

 

dB Control is introducing the dB-4522 traveling wave tube (TWT) amplifier for use in military manned and unmanned airborne applications, electronic countermeasures (ECM), EW threat simulation and high-power communications. The dB-4522 TWT amplifier operates in the 11-18 GHz frequency range and provides 450 Watts CW (at 11-17.5 GHz) and 400 Watts CW (at 17.5-18 GHz) peak output … [Read more...]

New DC-DC Power Modules For 3G And 4G/LTE Wireless Base Stations

 

Lineage Power Corporation recently announced availability of its new family of Total Efficiency™ DC Voltage wide output power amplifier DC-DC converter modules, designed to  significantly lower costs for cellular base stations. The new 48V and 24V input, 350W JNW and JNC power amplifier modules, designed for use within 3G and 4G/LTE wireless base stations, underscore the … [Read more...]

Research Points to an Electromagnetic Bazooka

 

A technique borrowed from acoustics could lead to a super-powerful amplifier of microwave radiation, according to work funded by the French Ministry of Defense. In the article published earlier this year, time reversal is used to generate high power microwave pulses from a low power arbitrary wave generator. Although it was previously thought that creating an EMP of sufficient … [Read more...]

Choosing the Right Chamber for Your Test Requirements

 

Martin Wiles, Vince Rodriguez, ETS-Lindgren Developments within standards community has led to new chamber validation procedures above 1 GHz and alternative test methods using FARs. INTRODUCTION Anechoic chambers are used today for performing EMC measurements according to a variety of published EMC standards. There are many different fields of application, including … [Read more...]

Surface Scan on IC Level with High Resolution

 

Measuring of near field above ICs or open DIEs with precisely positioned microprobes is a new tool for engineers to detect and solve EMI levels. Jörg Hacker, Langer EMV-Technik GmbH, Bannewitz, Germany ABSTRACT Today, engineers have less time to develop electronic circuits. The time to market is getting shorter and the requirements on the products are increasing. It means … [Read more...]

Egregious Errors in Electromagnetic Radiation Evaluation

 

Reasons for widely differing results in commercial radiated emission measurements. MIL-STD-461 RADIATED EMISSION MEASUREMENTS In 1967, the first version of MIL-STD-461 was introduced. Radiated emission measurements were allowed outside of a shielded room but due to the low levels of radiated emission limits, compared to an average ambient, measurements were invariably made … [Read more...]

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