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3.11.08 -- Feature Article: Characterization Of Gaussian Noise Sources

March 11, 2008

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Greenray Industries T75 TCXO Offers Low G-Sensitivity And Very Tight Frequency Stability Over Temperature

Available at any frequency between 10 and 52 MHz, the T75 TCXO incorporates a low-noise ASIC oscillator which can output either a +3.3 V or +5.0 V CMOS squarewave or a 0.8 Vp-p clipped sine. Typical g-sensitivity of the crystal is 2.5 x 10-9/g but options are available where it can be specified down to < 5 x 10-10/g, worst axis being the 'Z' axis. Applications include WiMAX, GPS, Stratum 3, mobile instrumentation, and smart munitions. Learn more.

Featured Article
Characterization Of Gaussian Noise Sources
Key applications in high-rate serial data technologies assume that random jitter (RJ) follows a Gaussian distribution and require that receivers be tested under the stress of a calibrated level of Gaussian RJ. However, the most commonly available noise sources have never been rigorously characterized until now. This article demonstrates a complete statistical analysis of industry-standard noise sources and reports on the extent to which the Gaussian assumption is valid...

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HF Coils
Coil-Q's Q3-Series HF Coils feature magnetic and electrostatic shielding and very low TC<35 PPM/°C. The coils are compatible with high-temperature soldering and all cleaning processes. Download the specifications sheet for more information.

Outdoor Field Monitoring System
The Narda Safety 2600 Area Monitor is a complete stand-alone field monitoring system designed for outdoor applications. The weatherproof housing includes a solar array that charges the internal battery. Download the product datasheet for specifics.

Wireless Communications Test Set
The Agilent 8960 test set is an E5515C mainframe with technology-specific hardware options and software applications. With two hardware options, the 8960 is capable of testing all major 2G, 2.5G, and 3G wireless technologies. A large selection of software applications is available to tailor the 8960 for wireless device development, manufacturing, service, or repair. Download the product overview for details.

Automated Test And Data Management
Spartan Automated Test And Data Management from Summitek provides a cost-effective solution to automating S-parameter measurements that will add value to the organization through reduced test costs, increased data accuracy, and a powerful data mining facility. Download the product brochure for specifics.

EM Simulation Software
CST Microwave Studio is a specialist tool for 3-D EM simulation of high-frequency devices such as antennas, filters, couplers, planar and multi-layer structures, and SI and EMC effects. Applications include mobile communication, wireless design (Bluetooth), signal integrity, and EMC. Download the product overview for more information.

3.1 To 3.5 GHz Hermetic S-Band Radar Transistor
The high-power pulsed radar transistor device part number IB3135MH100 from Integra Technologies is designed for S-band radar systems operating over the instantaneous bandwidth of 3.1 to 3.5 GHz. While operating in class C mode, this common base device supplies a minimum of 100 watts of peak pulse power under the conditions of 100 us pulse width. Download the product datasheet for specifics.

Glass-To-Metal Tubing
A.T. Wall Company has produced glass-to-metal tubing for the electronics industry for over 25 years. The material commonly known as Kovar is an alloy of nickel, cobalt, and iron and is uniquely designed for glass-to-metal sealing. Download the specification sheet for details.

Printed Circuit Board Substrate Materials
IsoClad laminates are non-woven fiberglass/PTFE composites for use as printed circuit board substrates. The non-woven reinforcement allows these laminates to be used more easily in applications where the final circuit will be bent to shape. Download the product datasheet for more information.

Single-Layer Microwave Capacitors
Johanson Technology's single-layer capacitors are available in a variety of sizes, dielectrics, and termination styles where SLC applications are required. Johanson offers both standard and custom solutions. Download the product datasheet for specifics.

RF/Microwave Filters
Trilithic manufactures a complete line of fixed frequency filter products including bandpass, low pass, high pass, and band reject. These filters are available in a wide variety of formats including surface mount, PC mount, coaxial, cavity, and tunable. Request more information from Trilithic on its RF/microwave filters.

Solid-State Noise Parameter Test System
The NP system from Maury Microwave consists of hardware and software, RF cabling for measurement interconnects, accessories, installation, and training. The system covers a frequency range of 300 MHz to 40 GHz in modular design with full upgrade compatibility. Download the product datasheet for more information.

S-Band Radar Power Transistor
Microsemi Power Products Group's 2729-170 is an internally matched, common-base bipolar transistor capable of providing 170 watts of pulsed RF output power at 100 µs pulse width, 10% duty factor across the 2700 to 2900 MHz band. Download the product datasheet for details.

DCS Duplexer
The CMD125 DCS duplexer from Commercial Microwave Technology (CMT) features an operating temperature of 0° to +60°C, and a storage temperature of -40° to +85°C. It also has an insertion loss of 1.0 dB maximum, and a return loss of 18.0 dB minimum. Download the product datasheet for specifics.

Thin-Film Dual-Resistor Networks
The MSDR series dual center-tapped chip resistor from Mini-Systems offers the high stability, low noise, and low T.C.R./T.C. tracking of thin film while providing greater flexibility in hybrid designs. Download the product datasheet for details.

Full-Wave 3-D EM Simulator For Both Planar And 3-D Structures
Zeland's IE3D Electromagnetic Simulation and Optimization Package Version 14 is method-of-moments-based electromagnetic (EM) software for high performance network distributed simulation and optimization. Schedule a demonstration today.

RF Coaxial Connector
The D4-K223H RF coaxial connector from Forstar features a frequency range of DC to 2 GHz, and characteristic impedance of 50 ohms. All Forstar connectors are RoHS compliant. Download the product datasheet for more information.

RF Data Filtering PC Software
Sieve from Berkeley Varitronics Systems is a Windows XP application that generates 40 Lambda averaged data that was collected from Berkeley's Gator stimulus Class A transmitter and Coyote modular receiver combination. The transmitter/receiver/software package is being distributed to WiMAX engineers, technicians, and installers interested in optimizing their 2.5 and 3.4 GHz networks. Download the product datasheet for details.

TX-RX Front-End Module
SKY77519 from Skyworks Solutions is a very low profile TX-RX FEM designed for quad-band cellular handsets comprising GSM850/900, DCS1800, and PCS1900 operation, and Class 12 GPRS multi-slot operation and EDGE Polar Modulation. Switch-through support is provided by a dedicated WCDMA port. Download the product overview for specifics.

Technology 101 Articles
RF Globalnet provides its subscribers with a wide range of what we call "Technology 101" articles. These tutorials, papers, and other articles introduce you to the basics of RF, microwave, and millimeter-wave technologies and theory. You can access these articles in our Technology 101 Library.

If you are interested in submitting your own Technology 101 articles for consideration, please e-mail us at editor@rfglobalnet.com.

RF Globalnet Discussion Forums
Do you need technical advice on your current design? Are you looking for product recommendations from your peers? Are you curious to know what the rest of the microwave/RF design community is talking about? If so, visit the RF Globalnet Discussion Forums.
Featured Downloads
Datasheet: 802.11b/g RF Amplifier
These 802.11 bi-directional amplifiers from Stealth Microwave operate in the commercial 2.4 GHz ISM band and the 1.7 GHz military band. Designed for export or government use, these SSPAs provide range extension for off-the-shelf or custom-designed WLAN radios using 802.11b or 802.11g protocol...
Datasheet: 91 To 99 GHz Mixer
The MBH100 from Northrop Grumman ST Foundry Services & MMIC Products is a W-band monolithic HEMT schottky diode, singly-balanced mixer designed for use in commercial digital radios and wireless LANs. The design requires no external bias and can be used as an upconverter and as a downconverter...
Datasheet: GPS, High-Performance, Low-Noise Amplifier
This low-noise amplifier from Orban Microwave Products is one in series of filtered L-band LNAs. This specific unit is designed to be integrated in high-end, basestation/geodetic class GPS antennas that are used in positioning and timing applications demanding high performance...
Featured Book

Microwave Receivers With Electronic Warfare Applications
By James B. Tsui

Whether you are an EW scientist involved in the test and evaluation of EW receivers or a designer of RWR's and other EW-related receivers, this book is a handy reference. Regardless of your need, be it for just the "quick and dirty" overview of each EW receiver type or for the exquisite technical details, this book will serve the desired purpose...
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