Pierre Piel
 Write for Microwaves & RF
5 results found for Pierre Piel, displaying items 1 - 5

September 2008   [Components]
LDMOS FETS Serve 330 W For L-Band Radar Systems
Solid-state power for commercial wireless base-station transceivers has been dominated by the laterally diffused metal-oxide-semiconductor (LDMOS) field-effect transistor (FET) since the device first became available in the 1980s. In spite of its ruggedness and attractive characteristics such as high linearity, gain, and efficiency, the siliconbased device has not had the same impact on L-band radar and avionics applications. Still, the MRF6V14300H 50-V LDMOS...

July 2007   [Devices & ICs]
LDMOS FETs Reach 1-kW Peak Output Power
Solid-state RF power for industrial-scientific-medical (ISM) applications usually requires multiple transistors to reach levels of 1 kW and more. Magnetic-resonance-imaging (MRI) systems, for example, employ power amplifiers that can deliver in excess of 20 kW of peak RF power. To serve these applications, Freescale Semiconductor (Tempe, AZ) has introduced the MRF6VP11KH, which delivers RF output power of 1 kW at 130 MHz—currently the highest-power commercially...

July 2006   [Devices & ICs]
White Paper: RF Power Devices Meet Wireless Challenges Head On
RF Power Devices Meet Wireless Challenges Head On? The number and types of commercial wireless-communications technologies have exploded in the last 15 years, from comparatively simple systems using FDMA to the higher-order modulation schemes employed in GSM and CDMA and new standards and services such as WiMAX and ZigBee?. For semiconductor manufacturers serving these applications, they represent immense opportunities. For...

July 2006   [Devices & ICs]
Defining ISM
Defining ISM Frequency bands allocated internationally for Industrial, Scientific, and Medical (ISM) applications are centered at various frequencies between 13 and 5700 MHz. They're unregulated, but before ISM equipment can be marketed in the US, it still must comply with the technical standards and equipment authorization procedures specified in the FCC's Part 18. Since they operate in the same spectral neighborhood as systems used...

March 2006   [Commercial]
WiMAX Muddies The Wireless Waters