A group of Columbia University Ph.D. candidates has developed a way to use a small sheet of graphene as a tunable resonator in a filter that is very small, low powered and easily tunable. This device could enable more versatile wireless circuits that would operate at many different frequencies while also able to integrate with existing silicon chip technology. The research … [Read more...]
New Flexible EMC/EMI Filter Modules
The Schaffner Group has expanded its product range with new EMC/EMI filter modules. The FN9280 series is equipped with single-stage EMC/EMI filters while the FN9290 series has a double-stage EMC/EMI filter with an attenuation of up to 80dB. The FN9290 series is suited for applications with higher interference levels, and the B versions of both series are suited for use in … [Read more...]
ALBA Synchrotron Commences Ferrite Nanoparticles Research
The ALBA synchrotron facility near Barcelona, Spain, has commenced operations as a research tool to observe the magnetic characteristics of nanoparticles of interest for their superconductor properties. One such area of research will focus on ferrite nanoparticles and has the potential to improve electrical transmission systems. Researchers are carrying out these experiments … [Read more...]
Band Reject Filter Eliminates AWS Interference at ENG-RO Sites
API Technologies Corp introduced the CMD719 band reject filter designed to eliminate Advanced Wireless Services interference of electronic news gathering receive only sites. The Band Reject Filter eliminates brute force overload interference of ENG-RO sites caused by AWS operators transmitting at 2110.6 to 2121.5 MHz, and its group delay does not degrade digital ENG … [Read more...]
EMI Suppression Filter Connectors
Lane Electronics’ LMHF filter connector series is a version of Weald’s established and successful MIL-C-26482 series 1 compliant LMH bayonet coupling circular connector and, as a result, is ideal for demanding applications requiring EMI suppression. The connectors are designed to eliminate the need for external filters which means reduced weight and less assembly time and … [Read more...]
Surface Acoustic Wave (SAW) Filters Standard
IEC 60862-2:2012 gives practical guidance on the use of SAW filters which are used in telecommunications, measuring equipment, radar systems and consumer products. IEC 60862-1 should be referred to for general information, standard values and test conditions. This part of IEC 60862 includes various kinds of filter configuration, of which the operating frequency range is from … [Read more...]
New Material Filters and Polarizes Terahertz Radiation
Researchers at IBM's TJ Watson Research Center announce a new material made from several layers of graphene is an effective shield for terahertz and microwave radiation, while letting visible light through. The researchers created thin films that can be engineered to absorb radiation in a specific band of the electromagnetic spectrum. Shields made of the material could be … [Read more...]
Common Mode Power Line Choke for Ultra-Slim Products
With the WE-CMBH series, Wurth Electronics now also offers a common mode power line choke in a horizontal version. With a profile height of only 22mm, the power line choke is ideal for slim housings. Due to low-capacitance winding technology, suppression over a wide band is now possible. This makes the WE-CMBH an excellent choice for interference suppression in the frequency … [Read more...]
High Current DC, Single and Three phase AC Filters
LCR Electronics, Inc. has released a new product line of high current DC, single and three phase AC filters. LCR’s high performance, dual stage AC and DC filters were designed with higher inductance common mode coils to reduce excessive common mode emissions generated by high power SCR’s (Silicone-Controlled Rectifiers), and meet the stringent attenuation requirements of … [Read more...]
Tantalum Capacitors Offer 33-°F Capacitance in 1206 Footprint
The newly expanded TLJ Series of capacitors from AVX Corporation includes a tantalum capacitor that offers higher capacitance versus voltage ratio bases on stable MnO2 electrodes. The TLJ Series capacitor offers a 33-°F capacitance at 10 V on a 1206 footprint with a height below 1 mm. These devices are manufactured from tantalum for high reliability and clear filtering. They … [Read more...]
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