dc.contributor.advisor | Olavsbråten, Morten | nb_NO |
dc.contributor.author | Skagmo, Jon Petter | nb_NO |
dc.date.accessioned | 2014-12-19T13:48:34Z | |
dc.date.accessioned | 2015-12-22T11:48:15Z | |
dc.date.available | 2014-12-19T13:48:34Z | |
dc.date.available | 2015-12-22T11:48:15Z | |
dc.date.created | 2013-09-09 | nb_NO |
dc.date.issued | 2013 | nb_NO |
dc.identifier | 646815 | nb_NO |
dc.identifier | ntnudaim:9860 | |
dc.identifier.uri | http://hdl.handle.net/11250/2370774 | |
dc.description.abstract | A VHF radio transceiver targeted for maximum efficiency and flexibility in CubeSat- and UAV applications has been designed, constructed and tested subsystem by subsystem, and ultimately as a complete system. The best case receiver sensitivity has been measured to be approximately -120 dBm at 1 % bit error rate using 9600 baud GMSK modulation while consuming 80 - 132 mW of DC power depending on input voltage. The transmitter section has been designed for constant envelope modulation with maximum efficiency over a large output power span. By using a switch mode power supply and dynamic biasing for the final PA, the total efficiency calculated from DC input to RF output at 8 V supply voltage was measured to be 53.0 %, 45.8 % and 17 % at approximately 5 W, 1 W and 0.1 W output power, respectively. Testing with 9600 baud GMSK modulation confirmed spurious emissions to be well within current regulations from ITU. | nb_NO |
dc.language | eng | nb_NO |
dc.publisher | Institutt for elektronikk og telekommunikasjon | nb_NO |
dc.title | A Narrowband SDR Transceiver for Amateur Radio Applications: Hardware Design and Construction | nb_NO |
dc.type | Master thesis | nb_NO |
dc.source.pagenumber | 150 | nb_NO |
dc.contributor.department | Norges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for elektronikk og telekommunikasjon | nb_NO |