mobile | classic
Dataweek Electronics & Communications Technology Magazine





Follow us on:
Follow us on Facebook Share via Twitter Share via LinkedIn


Search...

Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2017


 

Tektronix instruments support first data transmission through THz multiplexer
15 November 2017, Test & Measurement

Tektronix announced that its instruments played an important role in a technology demonstration that could one day enable the next generation of ultra-high bandwidth wireless communications links. In an article published in the journal Nature Communications, an international research team reported the first transmission of two real-time video signals through a terahertz multiplexer at an aggregate data rate of 50 gigabits per second, some 100x faster than cellular networks.

With demand for wireless data transmission speeds and capacities growing beyond what microwave signals can carry, the search is on for ways to use higher frequency THz waves that have a much larger capacity to carry data. One of the teams leading the way is an international collaboration between Brown University and the Institut d'Electronique de Microélectronique et de Nanotechnologie (IEMN), CNRS/University of Lille, in France.

This team has previously shown that the worlds of fibre optics and radio can be bridged using photonic-based THz circuits to achieve high data rates. However, for any system to be viable, a system for multiplexing and demultiplexing signals is a fundamental requirement. Using a waveguide system involving two metal plates in parallel, the researchers encoded two high-definition television broadcasts onto terahertz waves of two different frequencies: 264,7 GHz and 322,5 GHz. They then sent both frequencies together into the multiplexer system, with a television receiver set to detect the signals as they emerged from the device. Further experiments show that this system could deliver data rates up to 50 Gbps with low error rates.

The role of test instrumentation

The experiments in the demonstration employed QPSK modulation. For these, the optical signal was modulated using a dual-nested Mach-Zender modulator before a photomixing process generated the dual THz signals. Two Tektronix AWG70000 Series arbitrary waveform generators were then used to create two baseband non-return-to-zero (NRZ) data signals for the in-phase and quadrature data flows.

For detection, the dual frequency THz signal was down-converted in a Schottky-based sub-harmonic mixer to below 40 GHz. The output was then amplified and detected by a Tektronix DPO70000SX 70 GHz oscilloscope. The two QPSK signals corresponding to the down-converted THz channels were further analysed to recover the modulated data and the corresponding constellation diagrams.

"What this demonstration definitely showed is that a THz multiplexing system can be used to carry actual data without the streams interfering with each other," said Guillaume Ducournau, an assistant professor at IEMN. "With support from Tektronix, we were able to fully test and characterise our system and the results show that this approach could lead to future commercial application of THz wireless networks."

For more information contact Comtest, +27 (0)10 595 1821, sales@comtest.co.za, www.comtest.co.za


Credit(s)
Supplied By: Comtest
Tel: +27 10 595 1821
Fax: +27 11 608 1525
Email: sales@comtest.co.za
www: www.comtest.co.za
  Follow us on Facebook Share via Twitter Share via LinkedIn    

Further reading:

  • Enhancements to handheld RF/microwave analysers
    15 November 2017, Concilium Technologies, Test & Measurement
    Keysight Technologies announced new enhancements for its FieldFox handheld RF and microwave analysers. The instruments now connect to Keysight’s 89600 VSA software, the industry’s leading toolset for ...
  • Measurement data management software
    15 November 2017, National Instruments, Test & Measurement
    National Instruments has announced the release of the Data Management Software Suite, an enterprise software solution offering a complete workflow to standardise measurement data across teams, mine that ...
  • GPS disciplining for field testing – Part 2
    15 November 2017, Lambda Test, Test & Measurement
    The first part of this article, covering the fundamental principles of GPS clock frequency disciplining, was published in the 11 October 2017 issue of Dataweek. This second and final part covers the ins ...
  • Oscilloscopes with reconfigurable inputs
    15 November 2017, Comtest, Electronics Technology
    Tektronix introduced the 5 Series MSO (mixed signal oscilloscope). To better meet modern electronics design challenges, the midrange oscilloscope boasts a host of innovations including the industry’s ...
  • Land mobile radio test system
    15 November 2017, Comtest, Test & Measurement
    Bird Technologies has launched its Channel Power Monitor that monitors all aspects of land mobile radio (LMR) systems. It comprises a 1 RU central processor and a variety of sensors, which work together ...
  • NI boosts FlexRIO processing power
    15 November 2017, National Instruments, Test & Measurement
    National Instruments has announced a new PXI FlexRIO architecture that integrates mezzanine I/O modules with Xilinx Kintex UltraScale FPGAs. The first wave of products based on this new architecture includes ...
  • PON-aware power meter
    15 November 2017, Lambda Test, Test & Measurement
    The release of the industry's first PON-aware passive optical network (PON) power meter for testing next-generation and legacy PON technologies was recently announced. EXFO’s PPM-350D automatically detects ...
  • Power consumption measuring shield
    15 November 2017, Arrow Altech Distribution (AAD), Test & Measurement
    To accurately check the power consumption of embedded designs, the STM32 Power shield (X-NUCLEO-LPM01A) from STMicroelectronics is an affordable measurement tool for ultra-low-power devices such as ...
  • Automotive electronics test solution
    15 November 2017, Conical Technologies, Test & Measurement
    New energy automobiles are developing rapidly, and testing is key to guarantee quality. For the vehicle power supply system with complex output, the power voltage output always fluctuates as a result ...
  • Split-core AC current transducers
    15 November 2017, Denver Technical Products, Test & Measurement
    LEM now provides compact split-core, low cost AC current transducers to provide a TRMS 4-20 mA output from an external 20-30 V power supply (loop powered). Separate units are available with full scale ...
  • 2-channel oscilloscopes
    15 November 2017, Coral-i Solutions , Test & Measurement
    Rigol Technologies introduced its new DS2000E series oscilloscope, a 2-channel scope available in either 100 MHz or 200 MHz bandwidths. With a real-time sample rate of 1 GSps (on both channels), memory ...
  • Three-hole power transducer
    11 October 2017, Denver Technical Products, Test & Measurement
    The APT-TH series power transducers from NK Technologies monitor Watt consumption of three-phase loads, and provide an analog signal proportional to the active power consumed by the monitored load. The ...

 
 
         
Contact:
Technews Publishing (Pty) Ltd
1st Floor, Stabilitas House
265 Kent Ave, Randburg, 2194
South Africa
Publications by Technews
Dataweek Electronics & Communications Technology
Electronic Buyers Guide (EBG)

Hi-Tech Security Solutions
Hi-Tech Security Business Directory

Motion Control in Southern Africa
Motion Control Buyers’ Guide (MCBG)

South African Instrumentation & Control
South African Instrumentation & Control Buyers’ Guide (IBG)
Other
Terms & conditions of use, including privacy policy
PAIA Manual





 

         
    Classic | Mobile

Copyright © Technews Publishing (Pty) Ltd. All rights reserved.