Page 36 - SPECTRUM.pdf
P. 36

Department of Electronics and Communication Engineering, Nirma University



                                       Electronics



                                                above


                                                     Earth






         There is one more world present above us developed by eng ineers & scientists like us. Here, in this article, we are
         g oing  to talk about the Challeng es for Space Electronics with some remedies for those challeng es and the role of EC
         eng ineers in space application. So, fasten your seat belts, switch off your cell-phones and g et ready for a quick tour

         to know Electronics above the Earth.

         Electronics in Space Applications
         Nowadays, Life is impossible without satellite services as many sectors use it for various purposes including  g lobal
                                      finance,  telecommunications,  transportation,  weather

                                      forecasting ,  national  defense,  and  aviation.  We  can
                                      classify  satellite  services  in  three  broad  areas:
                                      Navig ation,  Communication,  and  Earth  observation.
                                      Navig ation  satellites  are  used  for  the  GPS,  during

                                      disasters Communication satellite pro-vide uninterrupted
                                      communications  services.  Earth  observation  satellites
                  Manan Jain          are  used  for  transmitting   environmental data. While   Neel Joshi
                  (18BEC050)          you are reading  this article more than 1500 satellites   (18BEC045)
         are  orbiting   our  earth!  Microelectronics  plays  an  important  role  in  space  electronics.  Analog   Devices  has  been
         supporting   the  aerospace  and  defense  markets  for  decades  with  hig h  reliability.  Electronic  warfare,  radars,

         communications, avionics, unmanned systems, and missile are major applications in aerospace. Nowadays space market
         focuses on the solutions for the challeng ing  requirements of the space.

         Challeng es for Electronics in Space

               Effects due to Temperature swing s: In space, there are rapid and wide chang es in temperature as compared
                 to that of Earth. It not only rises to 1200C in presence of sun but also falls to the  -1800C. Electronic
                 components which work efficiently at low temperature are very useful for space technolog y as they reduce
                 weig ht as well as manufacturing  cost by eliminating  the hit sinks In desig n. These components are tested
                 before used for space applications which includes re-start operation and thermal cycling  for different frequency
                 sig nals.

               Radiation effect: Radiation present outside Earth environment causes variation in some parameters of electronic
                 components or sometimes can result in complete functional failure of the component as well. Basically, Itis







                                                   SPECTRUM                                                        ISSUE 1                33
   31   32   33   34   35   36   37   38   39   40   41