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emf [2019/07/21 11:22]
bpaddock Added THz waves abstract.
emf [2020/03/03 03:34] (current)
bpaddock Changed note about Vehicle Occupation detection.
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 {{:​emf:​77ghzzapping.jpg?​400|}} What happens when a complex modulation of 5G at 28.375 GHz, 77 GHz from vehicle RADAR, and 5.9 GHz from Vehicle Infrastructure mix biologically? ​ I doubt anyone knows. ​ Is anyone other than me even asking that question? {{:​emf:​77ghzzapping.jpg?​400|}} What happens when a complex modulation of 5G at 28.375 GHz, 77 GHz from vehicle RADAR, and 5.9 GHz from Vehicle Infrastructure mix biologically? ​ I doubt anyone knows. ​ Is anyone other than me even asking that question?
 +
 +<WRAP important>​Due to may Day Job as an Embedded System Designer I get to see a lot of technical information that most people don't.
 +While I use components from the manufactures listed below in the performance of my job, the mention of any specific company doesn'​t not imply an endorsement by that company of any information found on this page.  I also have no known financial interests in any of the companies that I mention here.
 +</​WRAP>​
  
 ====== Electromagnetic Pollution ====== ====== Electromagnetic Pollution ======
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   * [[http://​www.ti.com/​lit/​pdf/​SPRY328|Leveraging the 60-GHz RF band to enable accurate mmWave sensing.   * [[http://​www.ti.com/​lit/​pdf/​SPRY328|Leveraging the 60-GHz RF band to enable accurate mmWave sensing.
 Read the white paper to learn more about leveraging the 60-GHz RF band to enable accurate mmWave sensing.]] Read the white paper to learn more about leveraging the 60-GHz RF band to enable accurate mmWave sensing.]]
-  * [[https://​www.ti.com/​solution/​vehicle_occupant_detection_sensor|Vehicle occupant detection sensor. {Or how to radiate your child as you drive.}]]+  * [[https://​www.ti.com/​solution/​vehicle_occupant_detection_sensor|Vehicle occupant detection sensor. {How to you ethical test this for health safety?}]]
    
 mmWave AWR - applications Automotive mmWave sensors applications:​ mmWave AWR - applications Automotive mmWave sensors applications:​
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 {{:​emf:​21915-100.pdf |Complete 5G Standard Release 15 March 2019}} {{:​emf:​21915-100.pdf |Complete 5G Standard Release 15 March 2019}}
 {{http://​www.3gpp.org|5G Standard Site}} {{http://​www.3gpp.org|5G Standard Site}}
 +
 +----
 +
 +====== Beamforming ======
 +
 +As mmWaves do not travel great distances a technique known as '​Beamforming'​ is used to enhance the signal by targeting your cell phone with the antenna energy.
 +
 +{{:​emf:​beanforming_analog_devices_138621_fig_01.png?​400|}}
 +
 +"​Massive MIMO and Beamforming:​ The Signal Processing Behind the 5G Buzzwords"​
 +by Claire Masterson.
 +
 +"... Beamforming is a word that means different things to different people. Beamforming is the ability to adapt the radiation pattern of the antenna array to a particular scenario. In the cellular communications space, many people think of beamforming as steering a lobe of power in a particular direction toward a user, as shown in the figure ..."
 +
 +https://​www.analog.com/​en/​analog-dialogue/​articles/​massive-mimo-and-beamforming-the-signal-processing-behind-the-5g-buzzwords.html
 +
 +"​Phased Array Beamforming ICs Simplify Antenna Design"​
 +by Keith Benson.
 +https://​www.analog.com/​en/​analog-dialogue/​articles/​phased-array-beamforming-ics-simplify-antenna-design.html
 +
 +"... A phased array antenna is a collection of antenna elements assembled together such that the radiation pattern of each individual element constructively combines with neighboring antennas to form an effective radiation pattern called the main lobe. The main lobe transmits radiated energy in the desired location while the antenna is designed to destructively interfere with signals in undesired directions, forming nulls and side lobes. The antenna array is designed to maximize the energy radiated in the main lobe while reducing the energy radiated in the side lobes to an acceptable level. The direction of radiation can be manipulated by changing the phase of the signal fed into each antenna element. ..."
 +
 +"Bits to Beams: RF Technology Evolution for 5G Millimeter Wave Radios"​
 +by Thomas Cameron.
 +
 +https://​www.analog.com/​en/​technical-articles/​bits-to-beams-rf-technology-evolution-for-5g-millimeter-wave-radios.html
 +
 +"An Interview with Analog Devices Discussing RF Electronics for Phased Array Applications"​
 +by Peter Delos.
 +
 +https://​www.analog.com/​en/​technical-articles/​an-interview-with-analog-devices-discussing-rf-electronics-for-phased-array-applications.html
  
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-====== ​Radiation effects topics for space, industrial and terrestrial applications ​======+====== ​6G ======
  
-//{{ :emf:radiation_handbook_for_electronics_sgzy002.pdf |Texas Interments compendium of radiation effects topics for space+"What Will 6G Be?" 
-industrial and terrestrial applications}}//, explains Solar and Terrestrial Radiation ​and effects on technology.+IEEE CTN 
 +Written ByAlan Gatherer, Editor-in-Chief 
 +Published29 Jun 2018 
 +https://www.comsoc.org/​publications/​ctn/​what-will-6g-be 
 + 
 +"​Initial 6G work is underway"​ 
 +BY Martin Rowe 
 +JULY 82019 
 +https://www.edn.com/​initial-6g-work-is-underway/​ 
 + 
 + 
 +"​Wireless Communications ​and Applications Above 100 GHz: Opportunities ​and Challenges for 6G and Beyond"​ 
 +by Theodore SRappaport, Yunchou Xing, Ojas Kanhere, Shihao Ju, Arjuna Madanayake, Soumyajit Mandal, Ahmed Alkhateeb, Georgios C. Trichopoulos 
 +(IEEE Invited Paper) 
 + 
 +https://​ieeexplore.ieee.org/​ielx7/​6287639/​6514899/​08732419.pdf
  
  
 ---- ----
  
 +====== Stuff In Space ====== ​
 +
 +Stuff in Space is a realtime 3D map of objects in Earth orbit, visualized using WebGL.
 +
 +The website updates daily with orbit data from Space-Track.org and uses  satellite.js Javascript library to calculate satellite positions.
 +
 +http://​stuffin.space
 +
 +
 +----
  
 ====== Cell Phones - Convenience Or 21st Century Plague? ====== ====== Cell Phones - Convenience Or 21st Century Plague? ======