Topic - Components

Home Product Directory Topics Note Pad Video Back Issues RF Blogs Military Electronics Subscribe News Design Features Web Seminars PartFinder Whitepapers Microwave Legends Newsletter EuMW 2007 WebConnect RF Design

RSS

PART SEARCH :

Sponsored Links

Components

400 results found for Components, displaying items 1 - 20

--> May 2008
Chip-Scale Packaging Approach Cuts Losses
Chip-scale packaging (CSP) offers great promise for shrinking the size and cost of certain semiconductor devices. With customer pressures to reduce the size, weight, and cost of commercial semiconductors for wireless handsets, infrastructure equipment, and other commercial electronic applications, semiconductor manufacturers have sought ways to reduce the impact of packaging on their chips. Avago Technologies (... — Jack Browne

May 2008
Multilayer Microstrip Forms Tunable Bandstop Filters
Tunable bandstop filters are useful for a wide range of applications in eliminating unwanted signals and interference. Designing such filters can be greatly simplified with a new structure fabricated on multilayer microstrip substrates with a metallic diaphragm. This new structure overcomes the limitations of traditional tunable bandstop filter designs and supports simple, low-cost manufacturing processes.1 The new tunable filter... — Yamina Bekri , et al.

May 2008
VCOs Offer Linear Tuning Through 10.9 GHz
Linear tuning is essential for a wide range of applications requiring frequency precision over time and temperature. The latest series of voltagetuned oscillators from Synergy Microwave (www.synergymwave.com) provide outstanding tuning linearity at frequencies through 10.9 GHz. The first three models in the DCO and DXO families of voltage-tuned oscillators provide frequency coverage of 4730 to 5420... — Jack Browne

May 2008
Custom Synthesizers Range 144 To 4500 MHz
Frequency synthesizers provide the fixed and tunable signals for local oscillators (LOs) in a wide range of commercial and military communications systems, including in wireless base stations. Technologies for creating frequency synthesizers are diverse, from traditional analog methods using phase-locked loops (PLLs) to direct digital synthesizers (DDSs) that rely on high-speed digital-to-analog converters (DACs) to transform digital input words into... — Jack Browne

May 2008
FETs Target WiMAX PAs From 2500 To 2700 MHz
TWO LDMOS RF power transistors have debuted for wireless-infrastructure applications in the 2.5-GHz-to-2.7- GHz frequency band. By providing peak output power of up to 170 W, these transistors should help designers simplify their RF power-amplifier (PA) designs. Under WiMAX signal conditions, the PTFA260851E/F single-ended, 85-W FET typically features 14 dB gain and 22 percent efficiency at 16 W average output power. Its sibling, the PTFA261702E push-pull,... — Nancy Friedrich

May 2008
2.5-GHz, 90-Deg. Antenna Serves WiMAX Base Stations
TO TARGET both fixed and mobile WiMAX applications, a new antenna is promising to provide a very predictable pattern and consistent performance. The antenna specifically targets maximal-ratio-combining (MRC), multiple-input-multiple-output (MIMO), and other wireless wide-areanetwork applications. The 2.5-GHz, dual-slant 45-deg., 90-deg. WiMAX base-station antenna is fully compliant with ETSI EN 301.525 CS pattern specifications. It operates across the 2.3-to-2.7-GHz... — Nancy Friedrich

April 2008
VCO Source Programs Arbitrary Waveforms
Frequency agility is a key requirement for a variety of military systems, including electronic warfare (EW), electronic countermeasures (ECM), secure communications, and electronic intelligence platforms. For these systems, conflicting requirements in technical performance, power management, packaging, and environmental survivability often give rise to interesting and innovative designs. The engineers at Narda Microwave-East resolved these conflicts... — Neil Heft , et al.

April 2008
Surface-Mount VCO Tunes 800 To 1000 MHz
Signal generation is a critical component of most highfrequency systems. Oscillator suppliers are being asked to develop higher-performance solutions in smaller packages, to meet the needs of multi-mode, multiband wireless communications systems. In response, Synergy Microwave (www.synergymwave.com) has developed its latest series of compact, surface-mount voltage-controlled oscillators (VCOs) for systems with... — Jack Browne

April 2008
European Consortium Increases Speed Limit Of Silicon-Based Transistor
PARIS, FRANCE—A European consortium, led by STMicroelectronics, held the kick-off meeting of the EU-funded project DOTFIVE and titled “Towards 0.5 TeraHertz Silicon/Germanium Heterojunction Bipolar technology (SiGe HBT).” The consortium is setting out to develop advanced silicon-based bipolar transistors with a maximum operating frequency of 0.5 THz or 500 GHz needed for future millimeter-wave and TeraHertz communication, radar, imaging, and sensing... — Dawn Hightower

April 2008
Constraints Impact UWB Antenna Performance
Solutions for Optimal Waveforms for an Ultra-Wideband (UWB) link have been presented using transmit and receive antennas that are realistic and specific. Yet antenna expert David M. Pozar, who hails from the Department of Electrical and Computer Engineering at the University of Massachusetts (Amherst, MA), asserts that a better approach might be to determine the best performance that can be obtained for any antenna with certain constraints, such as... — Nancy Friedrich

April 2008
100-W SSPA Targets Ku-Band
100-W SSPA Targets Ku-Band To provide low-cost operation and longevity for satellite-communications (satcom) customers, a compact, 100-W, solid-state high-power amplifier (SSPA) has been introduced in an integrated antenna-mount package. This SSPA, which is dubbed the model XTS-100K1, is designed for satcom operation at 14.0-to-14.5-GHz Ku-band frequencies and optionally available in a version for use at 13.75 to 14.5 GHz. Thanks to its antenna-mount approach,... — Nancy Friedrich

April 2008
Power Divider/Combiner Covers 950 To 2150 MHz
Power Divider/Combiner Covers 950 To 2150 MHz Power dividers and combiners are critical to the distribution or combining of microwave signals. The model PD-32-LB3-S, for example, provides for 1 x 32-way inphase power division or combining over the very-small-aperture-terminal (VSAT) extended frequency band, LB3. That band spans 950 to 2150 MHz. The RoHScompliant PD-32-LB3-S boasts a maximum insertion loss of 4.0 dB, an in/out ... — Nancy Friedrich

April 2008
Power Amplifier Offers 50 dB Gain From 6 To 18 GHz
Power Amplifier Offers 50 dB Gain From 6 To 18 GHz By taking a monolithic-microwave-integrated- circuit (MMIC) approach, a family of broadband high-power amplifiers is being billed as both economical and reliable. The model AMP6G18-50-33 is a 6-to-18- GHz amplifier. It flaunts more than 50 dB of gain. The amplifier delivers at least 2 W of output power at 1-dB compression. Its noise figure is less than 3.5 dB. Typical current draw is less than 1.5 A from +12 VDC. The... — Nancy Friedrich

April 2008
Mini-TCXO Keeps Phase Noise To -155 dBc/Hz
Mini-TCXO Keeps Phase Noise To â??155 dBc/Hz Designers are under pressure to shrink the size, lower the cost, and improve the performance of a variety of components. Oscillators are among the most essential of the components requiring these enhancements. Following this trend, the VTM3 temperature-compensated crystal oscillator (TCXO) offers phase-noise performance that is similar to its predecessorsâ??the VTC4 and VTC1 TCXOsâ??in a 50-percent package smaller ... — Nancy Friedrich

April 2008
Low-Jitter Modules Generate Clock Signals To 40 Gb/s
Billions of cellular telephones and their users worldwide are driving demands for faster communications networks. Optical communications systems support long-distance services and serve as the backhaul communications for wireless networks. At one time, optical communications systems operating at 10 Gb/s (OC-192) may have seemed adequate but, with growing voice, data, and video traffic, optical communications networks carrying data rates of 40 Gb/s ... — A.P.S. (Paul) Khanna

April 2008
Large-Signal Approach Yields Low-Noise VHF/UHF Oscillators
Oscillator design for veryhigh- frequency (VHF) and ultra-high-frequency (UHF) applications has been well documented in books and journals. Most early work focused on frequency stability and, to a lesser extent, on efficiency and output signal quality. But with increasing use of advanced modulation formats in communications systems, and the growing need for oscillators with... — Ajay Kumar Poddar , et al.

April 2008
Cut Loss In Low-Voltage, Wideband PIN Attenuators
Variable attenuators based on the pi (p) configuration can be designed with frequency coverage spanning multiple octaves, from the high-frequency (HF) range to the lower microwave region. As a result, they are suitable for numerous wideband applications, such as in satellite television and cable-television (CATV) systems. The use of PIN diodes in these attenuators enables them to be realized as low-cost components and compact alternatives to ... — Chin-Leong Lim

April 10, 2008
B&Z Technologies Launches 20-GHz LNAs
— Jack Browne

April 9, 2008
Catalog Collects Shielding Solutions
— Jack Browne

March
Nujira And TTP Demonstrate High-Efficiency RF Power Amplifier
Cambridge, UK and Mobile World Congress, Barcelona, Spain— Nujira has announced the successful demonstration of ultrahighefficiency RF power amplifier (PA) operation with DVB OFDM signals, supported by TTP and the Carbon Trust. “This demonstration shows that the power efficiency savings that Nujira has demonstrated with WCDMA and WiMAX can be achieved with even greater effect for OFDM-based mobile and digital TV standards at UHF, such as DVB-T, DVB-H, ISDB-T and ... — Dawn Hightower

prev. page [1] 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 next page