Christian Hoffmann, Technische Universität München, Lehrstuhl für Hochfrequenztechnik, Munich, Germany; Stephan Braun, GAUSS Instruments GmbH, Munich, Germany Arnd Frech, GAUSS Instruments GmbH, Munich, Germany; Peter Russer, Technische Universität München, Lehrstuhl für Nanoelektronik, Munich, Germany Time-domain electromagnetic interference (EMI) measurement systems are … [Read more...]
Amplifers
On the Radiation Patterns of Common EMC Antennas
Vincente Rodriguez, ETS-Lindgren LP., Cedar Park, Texas, USA Antennas have been used in EMC measurements since the early days. Knowledge of the antenna pattern was not a requirement of the standards. While MIL STD 461 and some SAE standards called for information on the half power beamwidth, most standards did not require any knowledge of the antenna radiation characteristics. … [Read more...]
Troubleshooting Radiated Emissions Using Low-Cost Bench-Top Methods
Kenneth Wyatt Wyatt Technical Services LLC Editor's Note: Click on the pdf icon at left for a printable copy of this article. Because time-to-market and budget factors often drive many of today’s high-tech designs, electromagnetic compatibility (EMC) issues often surface at the last moment in the design cycle, potentially delaying product introductions. Very often, simple … [Read more...]
Transistors Cover Full Frequency Bands for Wireless Base Stations
Freescale Semiconductor’s two new LDMOS RF power transistors allow wireless base station amplifiers to cover all channels in an entire allocated frequency band. The transistors are internally matched with low capacitance to simplify circuit design and have integrated electrostatic discharge protection. Their broad gate-source voltage range of -6 to +10V increases their … [Read more...]
Amp Adds Switches for Test Versatility
Rohde & Schwarz adds new functions to its R&S BBA100 broadband amplifier family to create a one-box solution. Integrated RF output switches and sample port switches allow the amplifiers to be used for many applications without the need for external switching matrices. Existing third-party amplifiers can also be integrated into the R&S BBA100 system. The modular … [Read more...]
Redesigned "S" Series Amplifiers Offer Coverage 4 – 18 Ghz
AR RF/Microwave Instrumentation has redesigned several of its "S" Series amplifiers to extend the bandwidth from 18 GHz down to 4 GHz. The models previously went down to 6 GHz. The redesigned amplifiers are:Model 5S4G18 (5 watts CW, 4 - 18 GHz) (formerly model 5S6G18A)Model 10S4G18 (10 watts CW, 4 - 18 GHz) (formerly model 10S6G18A)Model 20S4G18 (20 watts CW, 4 - 18 GHz) … [Read more...]
16,000 Watt Solid-State Power Amplifier Released
AR RF/Microwave Instrumentation has been packing more power into its solid-state amplifiers lately, while at the same time making amplifiers smaller, lighter, and more energy-efficient. The company has now exceeded its highest power amplifier with its new Model 16000A225 (10 kHz – 225 MHz).AR RF/Microwave Instrumentation has delivered the 16,000-watt amplifier to BAE Systems in … [Read more...]
Class D Amplifier Offers Optimized EMI Performance
A new Class D amplifier offers more output power, lower noise and purportedly unsurpassed EMI performance in the industry's smallest package. Maxim’s new amplifier's 0.3mm-pitch, 9-bump wafer-level package (WLP) features a no-connect middle bump to eliminate the need for expensive PCB technologies. This allows the use of single-layer PCBs for reduced manufacturing cost. The … [Read more...]
Smaller, Compact Amplifiers Now Go Up To 1200 Watts
AR RF/Microwave Instrumentation has already reduced the size of its “S” Series solid-state amplifiers, making them smaller, lighter, more compact & portable without losing any power. The smaller size makes them more energy-efficient and a better value.Reducing the size while maintaining the power was a challenge; but now AR has added even more power to these smaller, more … [Read more...]
CMC300 Series Amps for EMC Testing Applications – Free Datasheet
Our CMC300 series amplifier provides a minimum of 300 watts of CW Power for the 10MHz to 1.0GHz frequency range. This type of amplifier is available at many power levels from 10 watts through 2000 watts. The unit is a very compact design in a single drawer 10.5”H (depending on the power level and options) x 19”W x 25.25”D. This model is ideal for the high power test … [Read more...]
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