Sponsor
Portland State University. Department of Electrical and Computer Engineering
First Advisor
Richard Campbell
Date of Publication
Spring 7-17-2018
Document Type
Closed Thesis
Degree Name
Master of Science (M.S.) in Electrical and Computer Engineering
Department
Electrical and Computer Engineering
Language
English
Subjects
Modulation (Electronics), Software radio, Antenna radiation patterns, Electromagnetic waves -- Scattering
DOI
10.15760/etd.6331
Physical Description
1 online resource (vi, 53 pages)
Abstract
The modulated scattering technique is used in conjunction with a Software Defined Radio (SDR) dongle to obtain a software-based modulated signal output. SDR# is the software package used to get spectrum analysis of the modulated signal. A transmitter yagi antenna sends a 2.304GHz signal on to an antenna connected to a reflector coefficient modulator (700Hz) and the modulated waves are received by another yagi. The receiver yagi antenna is then connected to a frequency converter to convert a 2.304GHz signal to a 144MHz dongle input signal which finally puts the scattered output on computer software with a SDR dongle. The output has a center frequency with modulated spectral lines on either side of the measured frequency. Finally, antenna patterns are measured with different types of antennas by rotating the antennas and observing the baseband modulation sidebands.
Rights
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
https://archives.pdx.edu/ds/psu/25685
Recommended Citation
Channamallu, Aditya, "Software Defined Radio Based Modulated Scatterer Antenna Measurement" (2018). Dissertations and Theses. Paper 4447.
https://doi.org/10.15760/etd.6331
Comments
This thesis is only available to students, faculty and staff at PSU.