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Title |
Abstract | Posted |
Size |
|---|---|---|---|
| Industry Views: SATCOM 2010: Current Trends In System Design And Application | With the Satellite 2010 event set to begin in just a few days, RF Globalnet thought the time was right to take stock of the satellite communications (SATCOM) industry — to explore some of the emerging design and application trends impacting this constantly evolving market. For assistance in this endeavor, we turned to Cobham’s David Thombs. | 03/09/2010 | 546.6 KB |
| Application Note: Application Of FEKO For Rotman Lens | Applications such as satellite and radar antennas require Beam Forming Networks (BFN) to produce correct feeding phases and amplitudes for their phased arrays. The Rotman lens is an example of a BFN with wide bandwidth and wide scan angle. Given the nature of the printed structure of Rotman Lens, method of moments (MoM) with Planar Green’s Function is very suitable considering both accuracy and computation efficiency. In [1], simulations of Rotman lens are conducted with MoM in FEKO, and excellent agreement with measured data is observed. | 03/09/2010 | 451.0 KB |
| Application Note: Matching Differential Port Devices | Differential signaling is the primary choice for a low power RF interconnection because it provides superior immunity to noise by offering twice the signal swing for a given supply voltage. The out of phase property of a balanced pair has several other benefits: it rejects any common mode interference signal, cancels the even order distortions such IM2, and reduces Electromagnetic Interference (EMI), EMI emission, and susceptibility. However, this presents a challenge for RF designers to integrate differential devices together since the widely used S-parameter matching technique cannot simply be applied. This article depicts a simple generic technique to match differential impedance devices and gives some matching circuit examples. | 03/09/2010 | 940.7 KB |
| Datasheet: T1215 Series -- TCXO (Temperature-Compensated Crystal Oscillator) | The T1215 measures 9mm x 7mm x 2.8mm and features a hermetic, ceramic package with ruggedized construction. It has been designed to deliver consistent, reliable frequency control performance in high shock and vibration environments. Reduced acceleration sensitivity down to 5 x 10-10/g is available for improved phase noise performance during vibration and acceleration. | 03/09/2010 | 102.0 KB |
| Datasheet: High Efficiency GaN Pallet Amplifier | RFHIC Corporation, manufacturer of active RF & MW components and hybrids with a heavy focus on GaN technology, has released GaN pallet amplifier for LTE/WCDMA RRH system, RTP-21010. This amplifier, when combined with DPD, produces over 40% efficiency at whole frequency band of 2100MHz~2180MHz, 45dB gain and 10W at LTE/WCDMA 4channel at 28V. This amplfier has been developed based on internally matched GaN on SiC device and Doherty technology. | 03/09/2010 | 707.7 KB |
| Brochure: SATCOM/MIL-Qualified Components | KRYTAR, Inc. founded in 1975, specializes in the design and manufacturing of ultra-broadband microwave components and test equipment for both commercial and military applications. Products cover the DC to 67 GHz frequency range and are designed for a wide range of applications. | 03/05/2010 | 554.2 KB |
| Video: Importing A CAD Model And Assigning Material Properties In XFdtd | This video demonstrates how XFdtd allows the user to create and manipulate extremely detailed models. A CAD model of a sedan is imported and then material properties are assigned for each part. The result is a very accurate model of the vehicle which can be used as a test bed for antenna simulations. | 03/05/2010 | 26.26 MB |
| Presentation: Wi-Fi/WiMAX Products And Direction | WiMAX is a family of IEEE 802.16 standards designed to address the needs for Wireless Metropolitan Area Networks (WMANs). There are currently two implementations being developed for broadband wireless access (BWA) systems: 802.16-2004 for fixed applications and 802.16 OFDMA (orthogonal frequency division multiplexing access) for mobile applications. 802.16 OFDMA is also known as 802.16e, named for its current working group task force. | 03/05/2010 | 324.8 KB |
| Application Note: Impedance Matching Techniques For Mixers And Detectors | The use of tables for designing impedance matching filters for real loads is well known. Simple complex loads can often be matched by this technique by incorporating the imaginary portion of the load into the first filter element. This technique is rarely useful for matching diodes because the equivalent circuit for the diode must include several real and imaginary elements. A methodical technique for matching such complex loads to a transmission line will be described. Previous references to similar procedures were empirical in nature. No tables are used, but it is necessary to know the admittance of the diode in the frequency band of interest. | 03/05/2010 | 234.7 KB |
| Product Overview: Multi Octave Log Periodic Antennas | Log periodic antennas are typically designed for broadband applications covering many octaves, and are designed to provide constant gain and constant beamwidth versus frequency. These antennas are linearly polarized, and planar versions are available that may be flush mounted for airborne and other low profile applications. | 03/05/2010 | 773.7 KB |
| White Paper: Practical Antenna Choices For 802.15.4 Enabled Consumer Electronics | Since being ratified in 2003, the wireless communications standard IEEE 802.15.4 has enjoyed a steadily increasing uptake rate. New and inventive industrial, medical, security and other specialized applications continue to be regularly introduced, employing either open or proprietary protocols riding atop the lower level network layers prescribed by the standard. With mature tools, cost reduced silicon and significant design momentum behind the standard, 802.15.4 enabled products are now set to flood the consumer market space. ZigBee RF4CE is the primary protocol that will power this next wave of deployment. | 03/05/2010 | 5.38 MB |
| Datasheet: THM1176 Magnetic Field Measurement System | Narda’s THM1176 is designed for measuring static magnetic fields and modulated fields up to 1 kHz, that occur with medical equipment (MRI’s), metal production and electro-magnets. | 03/04/2010 | 297.3 KB |
| Product Overview: 521U-Series Switches | The 521U Series is a break-before-make SPDT switch noted for its 5 Million actuation life cycle and for its various RF configuration options -- unterminated 2/3 (DP3T) switch, SPDT with 2W or 5W internal terminations, and SPDT with 2W or 5W external terminations. | 03/04/2010 | 488.0 KB |
| White Paper: Cable Particulation Study For Cleanroom Environments | This article unveils the results from a study Gore conducted with the Fraunhofer Institute for Manufacturing Engineering and Automation IPA in Stuttgart, Germany to measure the particulation of several cable chain systems. Gore also provides guidance and recommendations on how to minimize particulation in clean room environments. | 03/03/2010 | 1.27 MB |
| Application Note: Interfacing ZVA/ZVB/ZVT With AWR Software For Filter Design And Optimization | This application note describes how to interface R&S ZVA/ZVB/ZVT vector network analyzer with AWR electronic design automation (EDA) software. Using AWR Testwave™ option, measured data can be exported via GPIB/LAN and verified with simulated data. Basic filter design is simplified with AWR NuHertz™ filter wizard, an optimization tool that can be introduced to correlate measured with simulated data. | 03/03/2010 | 1.61 MB |
| Datasheet: SP3T Reflective Switch With Fast Switching Speed To 18 GHz | Narda, an L-3 Communications company, recently introduced the Model SP133DHS SP3T reflective switch that operates from 2 to 18 GHz and provides fast switching speed, high isolation, low insertion loss, and is housed in a rugged compact package. | 03/03/2010 | 237.2 KB |
| Tech Note: Why Use A YIG-Tuned Filter? | YIG filters utilize the same high-Q microwave resonance phenomenon as other YIG-based products but in a slightly different way. In YIG-based products, the resonant frequency exhibited by the YIG material is determined by an applied magnetic field. By placing a YIG sphere inside a magnetic field created by an electromagnet, for example, the resonant frequency can be changed by adjusting the current through the electromagnet. The resonant frequency of YIG-based oscillators and filters can vary over a wide range with a high degree of linearity by simply controlling the magnet drive current. | 03/03/2010 | 62.7 KB |
| White Paper: Understanding Star Switching: The Star Of The Switching Is Often Overlooked | Switching is probably the most overlooked and undervalued part of a test system design. Great attention is spent selecting the measurement and stimulus instruments. But more often than not, the signal switching solution does not complement the instruments. It doesn’t matter how accurate the instruments are if the signals pass through a poor switch to get to them. Engineers are familiar with test instruments because they have used them during their school years and at work in the lab and on the bench testing products or debugging new designs. So it’s easy for them to select instruments for an automated test system. On the other hand, the engineers probably did not use switching in day-to-day testing and only consider switching a minor component in an automated test system. | 03/03/2010 | 828.8 KB |
| Application Note: Using LabVIEW To Write Programs For The Aeroflex PXI Modules | The Aeroflex PXI module hardware includes the 3020 Series RF Signal Generator, 3030 Series RF Digitizer, 3010 Series RF Synthesizer and 3060 Series RF Combiner. | 03/03/2010 | 615.0 KB |
| Application Note: Using Dither In PXI 3030 Series RF Digitizers | When performing measurements of small signals at levels in proximity to noise, dither can be used to improve performance of the Digitizer. | 03/03/2010 | 236.7 KB |
| Application Note: Using Aeroflex PXI DLL’s With Embarcadero® C++ Builder | The Aeroflex PXI 3000 software architecture relies on dll interfaces to maximize speed of testing. | 03/03/2010 | 219.9 KB |
| Datasheet: 3280A Series Spectrum Analyzer | With a 30 MHz bandwidth digitizer as standard, the 3280A offers RF and microwave performance that employs the very latest digital signal processing technology for enabling superb level accuracy and a wide choice of resolution bandwidths. | 03/03/2010 | 251.7 KB |
| Application Note: PXI-based Radio Communications Testing | General radio communications testing often requires a suite of tests for design verification and/or manufacturing test which demand multiple pieces of test equipment, often coupled with hundreds of data point measurements requiring automation to acquire and process the data. | 03/03/2010 | 434.6 KB |
| Application Note: 3000 Series PXI Modules Using Aeroflex PXI ActiveX Controls In Visual C++6.0 | This document describes how to use Aeroflex PXI ActiveX controls (for example, afDigitizer, afSpectrum, afSigGen) in a Microsoft Visual C++ project. | 03/03/2010 | 957.5 KB |
| Datasheet: 3250 Series Spectrum Analyzer | The NEW 3250 Series has been developed to provide market leading performance at a low cost. The innovative compact design 3250 spectrum analyzer employs the latest digital processing and RF technology, providing accomplished accuracy, stability and measurement speed. | 03/03/2010 | 792.8 KB |