Today's Tech News: Notable or Not?

https://www.eurekalert.org/news-releases/1146509 "single chip dynamically reconfigurable frequency-selective modulation controlled via inter-stage microwave delays (demultiplexing) using cascaded phase modulators... significantly reduced size, weight, power consumption, signal loss... superior phase stability, high single-tone extinction ratio, resolved adjacent targets separated by just 1.3 cm, precise 1.27 cm ranging resolution... high-precision autonomous navigation, aerospace sensing, telecommunications"

https://interestingengineering.com/innovation/northrop-grumman-fortitude-gan-chip "Northrop Grumman FORTITUDE consolidates functions typically requiring multiple bulky discrete components... significantly reduced payload weight / power consumption while improving signal fidelity... major leap forward in high-density radio frequency microelectronics and semiconductor manufacturing... major operational enhancements across satellite/ space communications, defense radar, electronic warfare, GPS tracking, and emerging 6G infrastructure"

https://www.eurekalert.org/news-releases/1146062 "need for bulky ultrastable reference cavities/ complex feedback infrastructure eliminated using self-injection-locked Kerr microcomb... compact device achieves stable soliton operation while preserving high phase coherence... 5-meter free-space wireless transmission using 16-QAM and 64-QAM modulation utilizing soliton-crystal carrier near 319 GHz... simultaneously generates multiple mutually coherent THz carriers with consistent noise performance... wireless communication, sensing, precision radar"

https://www.eurekalert.org/news-releases/1140605 "integrated autonomous mobility sensing/ communications experience high computational burdens/ hardware complexity since need multiple specialized signal processing units as transmitted data volumes scale... overcome applying Fractional Fourier Transform analyzing time-varying frequencies, concentrating dispersed radar signal energy into single point extracting data through unified receiver... near 100% target detection rate, distance errors <1 meter while maintaining stable communication"

https://phys.org/news/2026-03-2d-electronics-anisotropic-contact-resistance.html#google_vignette "miniaturization toward atomic scale increases contact resistance (Schottky barrier), overcome controlling metal electrode crystal orientation relative to 2D material, exploiting anisotropy lowering resistance... grow van der Waals metal contacts aligning with 2D semiconductor atomic lattice, dropping contact resistance >60% (record, nearing quantum limit... 2X increased carrier mobility/ significantly lower heat generation during high-speed operations. scalable modified chemical vapor deposition. lower voltages"

https://phys.org/news/2026-03-mini-earthquakes-tiny-chips-radio.html "silicon nitride chip used building radio filters/ amplifiers. but interaction between light/ sound waves within it too weak... overcome coating with tellurium oxide thin layer (200X more tightly), facilitating wave travel along chip's surface, creating light/ sound synergy... Brillouin sound-based amplifier, preventing signal fade, generating precise radio tone using half-mm-wide resonator... ultra-sharp radio signal filtering, avoiding interference in packed wireless networks... 6G, radar, satellite navigation" Related: New Roadmap highlights surface acoustic wave technologies https://www.eurekalert.org/news-releases/1126197

https://www.eurekalert.org/news-releases/1117497 "diamond exceptional thermal conductor but extreme hardness makes difficult to shape using top-down etching, overcome using microwave plasma reactor growing diamond patterns directly onto substrates from carbon gases... photolithography for small details/ laser-cut film for larger 2" wafers, act as foothold for diamond crystals to grow in precise locations... silicon/ gallium nitride semiconductor compatible, so scalable for: 5G devices, radar, and AI data center processors"

https://techxplore.com/news/2026-02-miniaturized-radar-chip-generation-wireless.html "overcomes chirp speed/ measurement accuracy trade-off... avoids complex digital predistortion, instead uses ramp tracker/ voltage-controlled oscillator calibration block... balances n-/p- channel metal-oxide-semiconductor varactors with opposing nonlinear characteristics to self-compensate for distortions. core circuit only 0.24 mm², mere 9.8 mW power, 1562.8 MHz/μs chirp rate at 1 GHz, 0.094% frequency modulation error... handles high-speed data and precise distance/ motion sensing simultaneously"

https://interestingengineering.com/ces-2026/worlds-first-terahertz-vision-sensor "984 feet range, 0.13° native resolution (up to 20X better than current automotive radar), provides detailed 3D point clouds with Doppler data (range, direction, elevation, speed), solid-state digital phased array using proprietary modular THz engine... unlike cameras or lidar, THz waves can see through fog, rain, snow, sleet, sun glare without losing accuracy... advanced driver-assistance system/  L2 to L5 autonomous driving levels... high-volume production 2028... motor vehicles, defense, healthcare, manufacturing" Related: Extra set of eyes for self-driving cars: Roadside radar sensors could reduce blind spots https://www.eurekalert.org/news-releases/1118398 A smarter way to debias AI vision models https://techxplore.com/news/2026-04-whac-mole-dilemma-smarter-debias.html Light-tunable polarization sensor could sharpen self-driving cars and medical scans https://techxplore.com/news/2026-05-tuna...

https://www.eurekalert.org/news-releases/1108271 "avoids complex, energy-intensive, unidirectional freezing... discarded egg white precursor, self-assembly (salting-out protein)... yields directional 1–7 µm macroporous channels enhancing impedance matching/ EM wave attenuation when EM waves propagate parallel to channels... WC1-x nanoparticles formed (tunable) during pyrolysis/ uniformly dispersed on carbon matrix, improving energy dissipation... record minimum reflection loss, wide absorption bandwidth... radar stealth, chip anti-interference" Related: KAIST develops smartphone-based technology to detect hidden cameras https://www.eurekalert.org/news-releases/1141846

https://techxplore.com/news/2025-12-aluminum-nitride-transistor-advances-gen.html "ultra-thin gallium nitride layer on bulk single-crystal aluminum nitride (AlN) substrate... AlN has ultrawide bandgap allowing it to withstand higher temperatures/ voltages, with low defect densities/ high thermal conductivity... lower channel temperature enables operation at even higher power, extending communication/ radar range... about 1 million-fold fewer crystalline defects significantly improves performance, several orders magnitude less gallium... RF power amplifiers for: 5G/ 6G, radar"

https://techxplore.com/news/2025-11-photonic-millimeter-radar-chip-generation.html "struggle maintaining high bandwidth at high frequencies, overcome using optical rather than electrical signal processing... thin-film lithium niobate photonic platform shrunk to sub-coin-size while achieving highest resolution of any on-chip photonic radar... mm-wave V band (centered at 45 GHz) with 10 GHz bandwidth... precision velocity detection/ ranging, integrations signal generation/ echo processing, no high-speed digital-to-analog/ analog-to-digital converters... scalable production on 4-inch wafers"

https://www.eurekalert.org/news-releases/1100979 "analog high-frequency RF/ microwave processors, including power-divider layer... not limited by transistor switching, digital processor clock speed, heat generation, energy efficiency... integrates device-level physics with system-level applications... unlike quantum systems which have scalability/ stability issues, this technology is feasible now... scalable real-time: radar, wireless networks, advanced communications, sensors, space technologies"

https://phys.org/news/2025-06-programmable-solution-higher-wireless-communication.html "single-chip microwave photonics fully integrates high-speed modulators, optical filters, photodetectors, transfer-printed lasers... no bulky/ power-hungry components... overcomes signal processing complexity, high transmission losses, power-hungry electronics... Microwave photonics: lower loss, higher bandwidth, improved energy efficiency... reconfigurable modulator/ programmable optical filter, enabling efficient signal modulation/ filtering with reduced signal loss... tunable indium phosphide optical amplifier"

https://techxplore.com/news/2025-03-high-programmable-photonic-chip-radar.html "scalable, smaller, faster, more efficient, seamless integration of electro-optic modulators, signal processors... flexible chip processes radio/ light signals... anti-jammer rejects strong interference while preserving weak information-carrying signals, not limited by spectral resolution( ability to separate signals very close together in frequency) so effective against jamming signals with frequencies close to communication signal. This capability is crucial for radar and 6G networks, where traditional filters struggle with dense interference"

https://www.eurekalert.org/news-releases/1069239 "improves object recognition precision without need for bandwidth expansion or ultra-high-resolution algorithms with significant complexity... lower costs, reduced system complexity... additional information embedded in envelope of radar signals  using simpler algorithms.... also enables the precise identification of objects both inside and outside the vehicle... lidar (autonomous vehicles), aerospace" Related: Algorithm to enhance Doppler resolution of unmanned vehicle radars https://www.eurekalert.org/news-releases/1105473 Teaching radar to read motion in traffic scenes https://www.eurekalert.org/news-releases/1145325

https://phys.org/news/2024-08-unique-combination-antennas-revolutionize-remote.html "higher resolution requires physically or effectively larger apertures... dramatically increasing effective aperture of remote radio-frequency monitoring system simply by tying rotating antenna to flat sparse array...  stitches together data from at least 3 antennas: 1D sparse antenna on 2D plane, and 2 antennas attached to either end of tether rotating at right angle to plane... effectively create an aperture area much larger than sum of physical components... faster cycle time.. numerous applications, including ground moisture monitoring"

https://phys.org/news/2023-10-revolutionizing-radar-thz-emitter-precise.html "cost-effective, scalable... spiraling (not just linear) electromagnetic waves with orbital angular momentum... helical twist introducing signature rotational Doppler effect when encountering spinning object... manipulating frequency generates radar measuring rotating object speed, 2% maximum margin error... beam emitter cavity access resonances enable vortex beams ±1 topological charges, illuminating rotating object, and resulting echo received by linearly polarized antenna... tactical military defense" Related: Researchers 3D print compact, low-cost vortex beam generators https://www.eurekalert.org/news-releases/1068045