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Assignment On Wireless Communications And Networks

   

Added on  2019-09-30

6 Pages1213 Words170 Views
AssignmentOnWireless communications and networksSubmitted byNameRegistration noDate

Introduction Antenna is an electronic devices which is capable of transmitting and receivingelectromagnetic waves which is also known as radio waves. However most of the antenna isresonant in nature and it operate in narrow bandwidth and frequency. Though there is need totune the antenna and match the frequency to get desired communication and strength elsereception can be impaired and it will not behave normal. One of the common example ofantenna network is dish network which we get in our home to broadcast TV Channels if thefrequency is not matched that cannot communicate with server. To satisfy the increased needof wireless network or communication channel there is need to do some modification inexisting network and that has been presented in these two research papers. Topic 1 Electronically-switched Directional Antennas for Low-power Wireless Networks: APrototype-driven EvaluationIn the above article the author wants to discuss the use of antenna network even in theavailability of low power wireless network. Electronically switched directional antenna iscapable to transmit even in low power wireless network. It is capable to increase energyefficiency by increasing communication range and by alleviating the direction different fromthe destination, however it require dedicated network stack. A result has been conducted onreal world antenna prototype and existing low power wireless stack and it is observed thatperformance has been increased. The low cost directional antenna is also capable ofproviding high frequency by the use of network stack and that was the outcome of thisresearch Mottola, L., Voigt, T., Picco, G., Quartulli, A., & Österlind, F. (2019). Topic 2

Benefits of Active Transmit Balanced Antenna Fed by Differential Power Amplifier In this research paper author has conducted research on a balanced antenna and a differentialamplifier. This experiment outcome said that this approach can be used in modern RFICdesign instead of using a 50Ω connection in unbalanced mode. To reduce the amount of losswhen power combining or balun network is eliminated and it results in RF front end design.According to this paper higher power can be generated as output by using same RFIC as wellas power supply which is very higher than conventional feeding method Sagor, M., &Callaghan, P. (2019). Description of methodologyElectronically switched directional antenna is capable of dynamically convey the radiationpower based on the direction which is directly opposite to isotropic propagation of the Omnidirectional antenna. By this principle communication range can be increased without anyadditional cost, or application of additional node. Where energy consumption is the keyfactor this type of antenna set up can be used because it works in low power wireless andgives high efficiency. Whereas balanced antenna is being feed by differential amplifier then it can generate goodspeed for 4G mobile applications but this approach is not widely used because of itseccentricity and complex techniques. A balun will be used to provide single ended output andthat way and that way a different antenna can be feed with balanced antenna along withpower amplifier to reduce loss and increase efficiency. Comparison of resultsAs soon as technology is growing that gives rise in the use of wireless network and digitaltechnology. Everyone wants to take benefits of good wireless network with less investmentsand that’s is the basis of these research paper. Existing antenna of differential or balanced

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