How does Satellite Internet Work?



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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!

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Table of Contents:
00:00 - Intro to Starlink
01:00 - Overview of Exploring Starlink
01:46 - Difference between Starlink and Broadcast Satellites
03:28 - Parts Inside a Dishy McFlatface
05:06 - How does an Aperture Couple Patch Antenna Work?
09:13 - Electromagnetic Wave Emission
12:45 - Forming a Beam that Reaches Space: Beamforming
15:22 - Brilliant
16:52 - Steering a Beam to Sweep Across the Sky
18:54 - Starlink: Phase Array Beam Steering
21:11 - Notes on Phased Array Beam Steering
22:24 - Sending Data in a Beam to the Starlink Satellite
23:27 - Innerworkings of 64QAM
26:02 - Actual Size of Starlink Dishy & EM Waves
26:55 - Images from the Starlink Patent
27:49 - Outro

Key Branches from this video are: How does Bluetooth Work?

Erratum:

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 https://www.blender.org/
Post with Adobe Premiere Pro

References:
Antenna Theory: https://www.antenna-theory.com/

Distributed Phase Shifter Array System and Method [Starlink Patent]
https://patents.google.com/patent/US20180241122A1/en)..

Elon Musk's Starlink and Satellite Broadband https://dgtlinfra.com/elon-musk-starlink-and-satellite-broadband/

SpaceX Filings with FCC https://fcc.report/IBFS/Company/Space-Exploration-Technologies-Corp-SpaceX

SpaceX Reveals More Starlink Info After Launch of First 60 Satellites https://techcrunch.com/2019/05/24/spacex-reveals-more-starlink-info-after-launch-of-first-60-satellites/

Wikipedia contributors. "Antenna Types","Aperture(Antenna)" ,"Low Earth Orbit", "Patch Antenna", "Phased Array", "Starlink" Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, Visited August 2022

#Starlink #Satellite #Internet
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