Download Library
Title |
Abstract | Posted |
Size |
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| Datasheet: Tunable Filters And Bandpass/Bandstop Diplexers | K&L Microwave’s tunable filters and bandpass/bandstop diplexers are typically used in test and measurement applications. The diplexers feature broadband matching at the common port, low insertion loss, and high isolation. What makes tunable filters useful is that they provide high performance in a single package. Tunable filters can be offered to cover frequencies as low as 800 KHz or as high as 3 GHz. | 09/05/2008 | 811.1 KB |
| Application Note: Hybrid TL/MoM Solutions For Cable Coupling EMC Problems | The challenge of cable coupling analysis: The electromagnetic coupling between cable bundles and their environment represents a very important and challenging class of EMC problems. For instance, consider the problem of a radiating source coupling to complex cable bundles mounted inside a car, truck, or bus. In such a case, the coupling is determined by the whole geometry of the vehicle, consequently a full-wave analysis of the vehicle as a whole is required. | 09/04/2008 | 1.33 MB |
| Application Note: Advanced RFID Measurements: Basic Theory To Protocol Conformance Test | This article explains both the basic functionality of RFID systems as well as the measurements that are commonly made. The goal is to provide readers with a solid understanding of some of the key technical design and implementation challenges faced by RFID design and test engineers. In addition, insight into how customers have used measurement systems based on PC-based modular instruments in their own research and development of RFID products is provided. | 08/27/2008 | 387.4 KB |
| Datasheet: YellowFin-OEM WiMAX Developer's Kit | YellowFin-OEM is a WiMAX developer’s kit that includes a calibrated receiver and DLL. The calibrated receiver measures between 2.0 - 5.9 GHz covering such popular wireless bands including Wi-Fi, Wi-MAX, ISM, Public Safety, Bluetooth and more. | 08/27/2008 | 1.01 MB |
| Application Note: Large-Signal LDMOS Model Simulation Using Agilent Genesys Software | This article is the first in a series of notes and tutorials intended to guide the user through the stages of simulation-based power amplifier design using Modelithics non-linear transistor models as well as high accuracy passive component models along with Agilent Genesys software. This note covers the initial phase of installing the non-linear transistor model, simulating DC I-V curves, S-parameters and swept power data with different impedances presented to the active device. | 08/21/2008 | 699.8 KB |
| Application Note: Lumped Element Low-Pass Filter Design And Optimization Using Agilent Genesys Software | This article covers the design and optimization of a 5th order lumped element low-pass filter using the Modelithics CLR library in concert with Agilent Genesys software. A demonstration circuit was fabricated and measured using a 16-mil thick Rogers 4003 substrate. The design process began with a conventional Chebyshev implementation in Genesys using ideal inductor and capacitor models. The simulation was then refined by the addition of Modelithics CLR models and careful modeling of the transmission line connections. | 08/21/2008 | 516.6 KB |
| TriAccess Technologies Delivers Complete Suite Of CATV RFIC Amplifiers For Emerging Networks | TriAccess Technologies, based in Santa Rosa, CA, designs and markets Radio Frequency Integrated Circuit (RFIC) amplifiers that enable cable television and telecommunications carriers to deliver the triple-play voice, data, and highquality video solutions demanded by business and residential subscribers. By AWR | 08/20/2008 | 473.1 KB |
| White Paper: Millimeter-Wave Printed Circuit Board Developments - Improvements For Mechanical Packaging And Electrical Requirements | Millimeter applications place heightened and unique requirements on circuit board laminates used as transmission lines or as antennas. Historically, applications were low volume. Recent growth of millimeter applications, such as ACC (adaptive cruise control) and side lane changing sensors for standard, high volume, affordably priced vehicles, or commercial millimeter communication systems, has driven circuit board laminate fabricators to innovate materials. This article explores advancements in millimeter-wave circuit boards and the technical requirements placed on materials. | 08/18/2008 | 184.1 KB |
| White Paper: Improvements In Microwave Laminates For Amplifier Reliability And Efficiency | Trends in the electronic industry continue to drive materials to satisfy higher power and higher thermal stability requirements. Many techniques have been developed to improve heat rejection in electronics, including engineered heat sinks, thermal interface materials, and whole subsystems (cooling fans and heat pipes). This pursuit has extended to RF and microwave circuit board substrate materials. | 08/18/2008 | 276.1 KB |
| White Paper: Electromagnetic Simulation Aids Development Of Unique EEG Cap | Researchers at the Athinoula A. Martinos Center for Biomedical Imaging at Massachusetts General Hospital (MGH), Charlestown, Massachusetts, are developing a special electroencephalography (EEG) cap for use with a research technique that integrates EEG with magnetic resonance imaging (MRI). This integrated technique offers the potential to improve investigations of brain activity | 08/18/2008 | 538.5 KB |
| Article: A Dash Of Maxwell's -- Chapter III -- The Difference A Del Makes | As part of our ongoing Technology 101 coverage, RF Globalnet is presenting the historic six-part article series on Maxwell's equations by Dr. Glen Dash. Written specifically for the Web, these articles are intended to serve as a primer on electromagnetic field theory. This third article covers using a differential form as opposed to an integral form when looking at Maxwell's equations. Additional installments will be featured in upcoming editions of RF Globalnet newsletter. |
08/13/2008 | 189.7 KB |
| White Paper: Antenna Performance Basics | The antenna is an important component of a wireless network. The proper antenna can optimize the range and reliability of a radio network while the wrong antenna causes high-performance wireless devices to appear to stop operating. This article provides a basic knowledge of key performance characteristics used to analyze antenna performance within installation environments. | 08/13/2008 | 266.2 KB |
| Guest Column: Get To Know Crest Factor And Its Influence On The Design Of OFDM-Based Systems | The exceptional performance of wireless communications systems and most recently television broadcasting is delivered in large measure by digital transmission technology and more specifically by higher-order modulation schemes such as Orthogonal Frequency Division Multiplexing (OFDM). To understand the importance of crest factor in designing a system using OFDM, it helps to review its fundamental concepts and statistical background, as well as practical considerations to remember when creating a system design. | 08/11/2008 | 312.1 KB |
| Application Note: The Crest Factor In DVB-T (OFDM) Transmitter Systems And Its Influence On The Dimensioning Of Power Components | The content of this Application Note is divided into two parts. Part 1 (Chapter 2) deals with the determination of the crest factor and its consequences for the dimensioning of transmitter components. Part 2 (Chapter 3) provides additional background material for readers who want to go further. Based on the example of a DVB-T signal in 2K mode, we then take a precise look at OFDM signals ranging from generation to the modulated RF signal. | 08/11/2008 | 715.0 KB |
| White Paper -- Tortoise: Dual Band Transmitter | Berkeley Varitronics’ reptiles spread all around the world. Wireless industry operators, installers and consultants on every continent are using Gators, Lizards, Crocodiles and Dragons. These portable RF transmitters range from 1mW to 45W, have high spectral purity, frequency agility and are offered in practically every frequency band of interest. | 08/07/2008 | 545.0 KB |
| Datasheet: Ultra-Broadband Power Amplifier | The CHPA0618-1 ultra-broadband power amplifier incorporates gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC) technology into CAP’s revolutionary, patented Spatium™ broadband spatial combining architecture to achieve outstanding solid state power levels across the amplifier’s extended 6-18 GHz frequency range. | 08/06/2008 | 2.34 MB |
| Datasheet: Filtered Interconnect Solutions | Corry Micronics offers a complete line of SMT or connectorized filtered interconnect solutions. CMI offers a wide range of filtered products ranging from ceramic filtered d-sub miniature connectors to filtered adapters, band pass filters and discreet multi-stage custom component filters. | 08/06/2008 | 134.7 KB |
| Presentation: IEC 61000-4-3:2006 Edition 3 -- Standard Update And How To Select The Correct Amplifier | This presentation is offered as supplemental background information and highlights the changes introduced with the latest edition of IEC 61000-4-3 and the impact the changes have on the EMC test system. | 08/04/2008 | 723.5 KB |
| Application Note: Mobile WiMAX PHY Layer (RF) Operation And Measurement | This article was written to help engineers accelerate time-to-market for their Mobile WiMAX solutions. This 68-page document can be used as a tool for engineers developing and testing components intended for the Mobile WiMAX market. It details OFDMA signals and the mechanisms used to make a connection between the base station and mobile station as well as the layout and operation of the base station and mobile station. Also included is a detailed section on test descriptions. | 07/30/2008 | 3.09 MB |
| Applications Of PIN Diodes | The most important property of the PIN diode is the fact that it can, under certain circumstances, behave as an almost pure resistance at RF frequencies, with a resistance value that can be varied over a range of approximately 1 Ω to 10 KΩ through the use of a DC or low frequency control current. This article describes the important properties of the PIN diode and illustrates how it can be applied in a variety of RF control circuits | 07/30/2008 | 391.9 KB |
| Technical Article: Tradeoffs And Other Requirements When Specifying RF Filters | Tradeoffs are paramount in understanding manufacturing and design cost drivers when it comes to specifying RF filters. For example, over-specifying requirements for a bandpass filter like low insertion loss accompanied with very high rejection within a narrow bandwidth of the passband increases the complexity, size, and the cost of the design as well, adding extra manufacturing efforts in the build and test cycles. This article focuses on tradeoffs to assist the RF System Engineer in understanding and consequently specifying requirements realistically as well as more effectively for the various types of RF filters presented. | 07/25/2008 | 299.1 KB |
| Video: An Overview Of AR Modular RF Capabilities | Enclosed in this .zip are five QuickTime movies outlining the capabilities of AR Modular RF. | 07/25/2008 | 638.03 MB |
| Datasheet: PLXO-Series Phase-Locked Crystal Oscillators | The PLXO-Series Phase-Locked Crystal Oscillators from EM Research are now available with significantly improved performance and smaller size... | 07/24/2008 | 265.1 KB |
| Datasheet: THOR Series Synthesizer | THOR Series Synthesizer covers 200 MHz to 12 GHz (in specific bands) and features a module mount onto a PCB... | 07/24/2008 | 232.7 KB |
| Datasheet: PN Series Synthesizer | The PN Series Synthesizer covers 50 MHz to 3.6 GHz (in specific bands)... | 07/24/2008 | 234.5 KB |
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