Antenna Systems & Technology - Winter 2015 - (Page 25)

TEST & MEASUREMENT NEW PRODUCTS & SERVICES High-Speed Scanning Direction Finder for Complex Signal Scenarios The new R&S DDF5GTS multichannel direction finder enables fast and comprehensive radio spectrum monitoring, while accurately taking bearings of signals of interest. It complements the Rohde & Schwarz portfolio of networked direction finding and radiolocation systems and is designed for use in especially demanding scenarios. Its high scan speed makes the R&S DDF5GTS suited for comprehensive interception and direction finding of signals in dense electromagnetic environments. A large selection of innovative DF antennas ensures optimal results under difficult conditions such as reflections or in environments with strong signals. Thanks to the new signal processing method (three channel architecture) and a realtime bandwidth of 80 MHz for the VHF/UHF/SHF range, the R&S DDF5GTS provides a very high DF scan speed of up to 60 GHz/s. This increases the probability of intercept and permits the detection and direction finding also of frequency agile LPI signals. A GPS can be used to synchronize and process the DF scan mode of multiple R&S DDF5GTS, allowing almost simultaneous, fast and automatic location of a large number of signals. An independent DDC channel also enables simultaneous direction finding and monitoring. Direction finding can take place within the realtime bandwidth, while one channel is used for further processing and signal analysis. ITU-compliant measurement methods can optionally be added to the R&S DDF5GTS to provide a broad spectrum of applications. There is a large selection of multichannel DF antennas available for the R&S DDF5GTS. They are primarily characterized by their large selection of integrated antenna elements, which enable stable direction finding even in complex signal environments. They are especially immune to reflections and maintain high location accuracy even for weak signals. Users can switch the innovative DF antennas between active and passive modes by a simple mouse click. Passive mode ensures immunity to strong signals while preventing overloading. Second Generation of the NRA Analyzer Family With New RF Module Narda Safety Test Solutions has announced a new generation of RF analyzers: NRA RX. These 19 inch rack mount devices analyze RF signals up to 6 GHz in the frequency and time domains, and exhibit receiver characteristics at the same time, thanks to a new high frequency receiver section. They are therefore well suited for radio monitoring applications. The RX version of the NRA Remote Analyzer has been equipped with an RF module that has been developed for low phase noise and low intrinsic interference. The analyzers can yield spectrums comprised of up to 600,000 frequency points with time resolutions as fine as around 30 nanoseconds. Unusually high channel bandwidths can be captured with the intermediate frequency bandwidths of up to 32 MHz. With software, users can freely define up to 500 channels or frequency ranges to be monitored. The demodulation function makes it possible to directly hear FM, AM, USB, LSB and CW signals using external headphones. The devices are primarily designed for use in automated and remote controlled measuring systems. A 10 MHz reference input is provided for synchronization to the system frequency. Stand-alone operation with a PC is also possible. There are two models available: NRA-3000 RX (9 kHz to 3 GHz) and NRA-6000 RX (9 kHz to 6 GHz). They can be ordered right now. Depending on the device type, Narda Remote Analyzers cover a frequency range from 9 kHz to 6 GHz with resolution bandwidths from 10 Hz up to 32 MHz. They can be integrated into practically any test and monitoring environment thanks to the Ethernet interface (100BASE-TX) and plain text remote control commands in ASCII. For More Test & Measurement, visit www.antennasonline.com/main/category/markets/test-measurement. www.AntennasOnline.com Winter 2015 Antenna Systems & Technology 25 http://www.antennasonline.com/main/category/markets/test-measurement http://www.AntennasOnline.com

Table of Contents for the Digital Edition of Antenna Systems & Technology - Winter 2015

Table of Contents
Editor’s Choice
A New Leap Towards True Software-Defined Radio
SON: The Future of LTE Network Deployments and Operations
Manufacturing of Zero-Centered Antennas for High Precision Positioning with Global Navigation Satellite Systems
Mission-Critical Flight Line Testing
Antennas
Components/Subsystems
Test & Measurement
Industry News
Marketplace
Tighter PIM Requirements for Multiband DAS

Antenna Systems & Technology - Winter 2015