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#starlink#phasedarray#beamforming

How does Starlink Satellite Internet Work?📡☄🖥

Branch Education

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  • Recommended by 2 people: 2 on Hacker News.

Intermediate. Assumes working knowledge.

9.8M views4 years ago2 recommendations

Systems programmingHardwareNetworking and protocolsEmbedded systemsElectronics

Branch Education uses 3D animations to explain how Starlink satellites and ground dishes use phased-array beamforming to maintain high-speed internet connections.

Go to brilliant.org/BranchEducation/ to sign up for free and expand your knowledge. The first 200 people will get 20% off their annual premium membership. With Starlink internet, data is continuously being sent between a ground dish and a Starlink satellite orbiting 550km above. Furthermore, the Starlink satellite zooms across the sky at 27,000km/hr! How can the dish and satellite maintain a continuous connection? And then how is data sent back and forth? Well, in this video we're going to dive into the inner workings for the ground dish and Starlink satellites, and see how a beam of data is formed, how this beam is swept across the sky, and then finally what exactly is in that beam that allows for incredibly fast internet! This is an incredible feat of technology and engineering, so stick around! Do you want to support in-depth engineering and technology education? Support us on: patreon.com/brancheducation Website: branch.education On Facebook: facebook.com/BranchEducation/ On Twitter: twitter.com/TeddyTablante On Insta: instagram.com/brancheducation/ Table of Contents: - Intro to Starlink - Overview of Exploring Starlink - Difference between Starlink and Broadcast Satellites - Parts Inside a Dishy McFlatface - How does an Aperture Couple Patch Antenna Work? - Electromagnetic Wave Emission - Forming a Beam that Reaches Space: Beamforming - Brilliant - Steering a Beam to Sweep Across the Sky - Starlink: Phase Array Beam Steering - Notes on Phased Array Beam Steering - Sending Data in a Beam to the Starlink Satellite - Innerworkings of 64QAM - Actual Size of Starlink Dishy & EM Waves - Images from the Starlink Patent - Outro Key Branches from this video are: How does Bluetooth Work? Erratum: At 2m50s, the orbits are inaccurate. The TV satellite should be in geostationary orbit moving in the same direction as the Earth. Furthermore, all the Starlink satellites should be orbiting West to East. Credit to Paul S. Script, Modeling, Animation: Teddy Tablante Twitter: @teddytablante Modeling: Prakash Kakadiya Animation: Mike Radjabov Voice Over: Phil Lee Sound Design: www.drilu.mx Sound Effects: Luis Zuleta Sound Effects and Music Editor: David Pinete Sound Effects: Raúl Núñez Supervising Sound Editor and Mixer: Luis Huesca Animation built using Blender 3.1.2 blender.org/ Post with Adobe Premiere Pro References: Antenna Theory: antenna-theory.com/ Distributed Phase Shifter Array System and Method [Starlink Patent] patents.google.com/patent/US20180241122A1/en).. Elon Musk's Starlink and Satellite Broadband dgtlinfra.com/elon-musk-starlink-and-satellite-broadband/ SpaceX Filings with FCC fcc.report/IBFS/Company/Space-Exploration-Technologies-Corp-… SpaceX Reveals More Starlink Info After Launch of First 60 Satellites ht

Why it's here

2 people recommend this

What people say. Highly recommended for its clear visual explanation of phased-array antennas, beamforming, and satellite networking.

__sy__on Hacker News • Recommends

On “Starlink is reducing your monthly service fee”

While on the topic of Starlink, I wanted to share this cool Youtube video 1 I watched tonight on how it works (PCBA design, beam forming, orbital velocity, up/downlink bandwidth as a result...etc). It's a bit long but has some good details! 1 link to this video

jasodeon Hacker News • Recommends

On “WiFi: “beamforming” only begins to describe it (2014)”

…receiver is in an area of maximum constructive interference at all times. To make a long story short, we do this by adjusting the phase between the otherwise-identical signals coming from the different antennas. There's a good Youtube video that illustrates the idea of deliberate constructive/destructive interference to "aim" antennas. Deep link: link to this video The video is about Starklink phased-arrays instead of wifi pointy antennas but it illustrates the same idea.…

nomelon Hacker News • Mentions

On “US agency will not reinstate $900M subsidy for SpaceX Starlink unit”

How Starlink works: link to this video Its nearest ground station bounced off nearest satellite, or some inter-satellite links, using lasers, to the user. It's optimized to be shortest route, just like routers with the internet. If you stream a movie, that request goes to in a short path from the server to you. You streaming doesn't slow down someone in China, because the data never approaches any equipment in China. Same with Starlink.

jacquesmon Hacker News • Mentions

On “Starlink Successfully Tests Space Direct to Cell Mobile Service”

…ely they will differentiate between populated and less populated areas by allocating more time to a spot to service all of the customers. link Of course the gain wouldn't be as nice as when both sides can do the phased array trick but cell phones don't have the same kind of antenna capabilities that Starlink's dish has. This is the relevant bit: link to this video I suspect the reason it is text service and not voice is that the phone antenna constraint results in severe bandwidth limitations. And with all that tech working for them I still think it is a small miracle they got this to work.…