Rohde & Schwarz Wireless Communications’ Post

My first research on THz Resonant tunneling diodes (RTDs) have been widely adopted to implement communication systems in the terahertz (THz) range. This study presents a package of the RTD for a THz receiver at the WR-2.2 band (330-500 GHz). In this package, the near-unity transmission effective medium waveguide composed of high-resistivity silicon and air is employed. A novel planar antenna integrated with the RTD chip maximizes the coupling efficiency to the silicon waveguide. The simulated bandwidth of the module is 170 GHz. The maximum error-free data rate of the module is 30 Gbit/s for direction connection to a transmitter. We also demonstrated wireless communication of 25 Gbit/s in a distance of 3 cm at 350 GHz.

Manipulating the frequency of terahertz signals through temporal boundaries. In a recent study, researchers from Japan have developed a new strategy to up- and down-convert a terahertz signal in a waveguide by dynamically modifying its conductivity using light, creating a temporal boundary. Their findings could pave the way to faster and more efficient optoelectronics and enhanced telecommunications - https://lnkd.in/djRGjeyW #6G #terahertz

IROC Technologies specializes in soft error analysis and mitigation. We dive into the critical world of radiation’s impact on semiconductor reliability. Our latest article on Semiwiki discusses the increasing importance of Single Event Effects (SEE) in chip design, packaging, and the profound impact on product reliability and failure rates. The impact of SEEs on a variety of applications, from satellite launch failures to real-world elections, is enormous. This isn’t just an issue limited to space or avionics. It affects our daily lives more than we think. Please check out the full article here: https://lnkd.in/eP2U-8f6 #SoftError #Reliability #Semiconductor #RadiationEffect #SEE

Looking to generate multiple phase coherent signals? Look no further than the APMSXXG series. The APMSXXG is a phase-coherent, multi-channel, ultra-fast switching, and low phase noise signal generator series, offering a frequency range from 300 kHz to 6, 12, 20, 33, and 40 GHz. With excellent phase noise, good spurious and harmonic rejection, and leading-edge switching speed of 25 μs with option FS, it redefines signal generation capabilities. With a frequency clock of 3 GHz, the APMSXXG ensures outstanding phase stability and coherence between channels of different units, enabling a wide range of applications! Applications: •         Radar Simulation •         Quantum Computing •         High Volume Automated Testing •         Phased Array Antenna / Beamforming •         Electronic Warfare Explore the possibilities with APMSXXG series and revolutionize your signal generation setup today: https://lnkd.in/dgF59z5 #MWTesting #RFTesting #AnaPico #MicrowaveTech #Signalsource

This paper considers a #stacked #intelligent #metasurface (#SIM) with the ability to perform beamforming in the #electromagnetic (#EM) wave domain. The authors develop a path-loss model that allows us to compute the received power of the signal after passing through the SIM. Based on the proposed path-loss model, they formulate an optimization problem to maximize the power at a desired target location in space. They develop a gradient ascent algorithm that can be applied when the phases of the meta-atoms of the SIM can be continuously varied. Also, they develop an #alternating #optimization (#AO) algorithm for the same problem when the meta-atoms can only apply discrete phase shifts. ---- Jiancheng An, Merouane Debbah More details can be found at this link: https://lnkd.in/gUmSJu7k

Antenna Arrays - Beamforming and MIMO Antenna array, an essential part of MIMO and beamforming, is an aggregate of radiating elements in an electrical and geometrical arrangement that will result in a desired radiation characteristics. An antenna array is set of antenna elements commonly organized in a structure such as an array of rows and columns. Signals are amplified (referred as gain) by transmitting different versions of the same signal from all antennas and can be steered towards particular direction. An antenna array can be used for both transmission and reception. Array with two elements is considered below. Antennas are converting electrical signal to electromagnetic waves. A receiving antenna will convert the sum of two incident waves into a received signal. No difference in propagation delays in two antennas are assumed. Gain and its pattern are derived below. With increase in antenna elements and hence the MIMO, gain increased and beam width decreased. This is the basis of higher number of antenna element arrangement and beamforming. *Complete course of 5G is available at- https://lnkd.in/efENj4Fv #telecom #technology #learning #platform #4g #5g #itelcotech https://lnkd.in/ek4PEUjf

#Reconfigurable #intelligent #surface (#RIS) is capable of improving the wireless system performance by steering the reflected signal in the desired direction. One of the major challenges is that both the transceiver and RIS have to be jointly optimized, where the optimization problems have to be reformulated for different system models and scenarios. To circumvent this challenge, new low-complexity #antenna #selection (#AS) algorithms for transceiver-agnostic RIS configuration are proposed. Given a multiple-input multiple-output (#MIMO) channel, the proposed RIS-AS opts for accurately aligning the RIS both with the transmit antenna (TA) and receive antenna (RA) for the sake of maximizing the MIMO channel’s overall output power. The proposed RIS-AS only has to configure the RIS alone, i.e. without iterations with the transceiver optimization. ---- Chao Xu, Jiancheng An, Tong Bai, Shinya Sugiura Prof Rob Maunder, Lie-Liang Yang, Marco Di Renzo, Lajos Hanzo More details can be found at this link: https://lnkd.in/e5Keij8z

VOA Variable optical attenuator (VOA) is a device that allows for the adjustment of the attenuation level of an optical signal as needed. Its main function is to precisely control the intensity of the light signal being transmitted by varying the mechanisms of absorption, reflection, or other attenuation methods. VOAs are widely used in fiber optic communication systems, fiber optic sensing, equipment testing, and calibration. Applications： Fiber Optic Communication Fiber Optic Sensing Equipment Testing and Calibration Data Centers and Networks #xhphotoelectric #VOA #opticalattenuator #Communications #Networks #optics #fiber #optical #sensing Read more https://lnkd.in/eN4wNW8j

VOA Variable optical attenuator (VOA) is a device that allows for the adjustment of the attenuation level of an optical signal as needed. Its main function is to precisely control the intensity of the light signal being transmitted by varying the mechanisms of absorption, reflection, or other attenuation methods. VOAs are widely used in fiber optic communication systems, fiber optic sensing, equipment testing, and calibration. Applications： Fiber Optic Communication Fiber Optic Sensing Equipment Testing and Calibration Data Centers and Networks #xhphotoelectric #VOA #opticalattenuator #Communications #Networks #optics #fiber #optical #sensing Read more https://lnkd.in/eWhYFBEg

The latest generation of performance-optimised coherent optics provides network operators with a powerful tool for reducing network TCO. Read Serge Melle’s article in the Optical Connections Magazine Autumn 2023 to find out how.