Browsing OU - Theses by Author "McDaniel, Jay"
Now showing items 1-20 of 22
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Calibration and Clutter Cancellation Techniques for Accurate Wideband Radar Cross Section Measurements
Jarvis, Rachel (2021-05-14)The expected received power is a key design parameter when designing a radar system. The radar’s receiver must be sensitive enough to detect the object of interest without being saturated by the highest received power. The ... -
DESIGN AND DEVELOPMENT OF A SYNTHETIC APERTURE RADAR VOLUMETRIC IMAGING SYSTEM
Gonzales, Andrew (2024-08-01)Synthetic aperture radar (SAR) is a widely used technique for creating high-resolution images of scenes. While SAR is primarily used for 2-D imaging, there is growing interest in developing SAR imaging for 3-D reconstructions ... -
Design and Fabrication of a Frequency-Agile and Surface Mountable Suspended Integrated Strip-Line (SISL) Bandpass Filter
Wells, Eric (2022-05-13)Modern radar and communications systems have increasingly high demands for low cost, size, weight, and power (C-SWaP) that will prove a challenge to satisfy. Surface mount technology is an excellent way to place components ... -
Design and Implementation of a High Power, High Temperature, and Surface Mountable 2-4 GHz Circulator for Integrated RF Transceivers
Hartline, Paul (2021-08-05)With the advent of today’s wireless communications systems, the ability for non-local systems to listen to each other is critical. In the case of two monostatic systems communicating with each other, a signal of a given ... -
Design and Implementation of a Loss-Programmable Filtering Attenuator
Knowles, Jonathan (2022-05-13)With the increased demand for modern wireless systems in various applications, the need for adaptable radio frequency (RF) systems has greatly increased. These modern systems rely on the ability to operate in the microwave ... -
DESIGN AND IMPLEMENTATION OF AN ALL-COTS DIGITAL BACK-END FOR A PULSE-DOPPLER SYNTHETIC APERTURE RADAR
Kenney, Russell (2020-05-08)Radar imaging techniques employing synthetic aperture radar (SAR) are ubiquitous in applications such as defense, remote sensing, space exploration, terrain mapping, and many others. However, to obtain fine image resolution, ... -
Design and integration of a low cost, size, weight, and power vertical-pointing synthetic aperture radar
Konyalioglu, Kurt (2022-05-13)In modern radar applications, cost, size, weight, and power (C-SWaP) are increasingly becoming critical factors in the design process. For use cases specifically in airborne radio frequency (RF) imaging, there is a key ... -
Design and Optimization of Broadband Matching Networks for Widely Steerable Phased Array Radar Systems
O'Connor-Lynch, Patrick (2022-05-13)The use of phased arrays have become prevalent in radar systems for military and weather applications due to their planar configuration and ability of electronic steering. However, mutual coupling between surrounding antenna ... -
Design and Validation of Measurement Procedures for Time-Varying Scatterers and Antennas
Kanaly, Kyle (2022-05-13)There is an interest in establishing performance metrics for time-varying antennas. However, quantifying the realized performance of a time-varying antenna requires considerations not necessary in LTI measurements as many ... -
Design of a Circularly Polarized Rectifying Antenna on a Flexible Substrate at X-Band
Walker, Christopher (2019-12-13)This thesis lays out the design procedure for a left-hand circularly polarized, high-efficiency rectifying antenna on a flexible substrate for use at 10 GHz. The rectenna system is designed for space based power applications. ... -
Digital predistortion of wideband radar waveforms
Summers, Randall (2021-12-17)As demands for increased radio frequency system performance have grown over time, sufficiently mitigating the distortion introduced by high power amplifiers has proven to be a major challenge to overcome. Digital predistortion ... -
Frequency-agile filtering antennas for S-band and X-band applications
Agasti, Rosalind (2023-05-12)Multi-functional, highly flexible, and tightly integrated Radio-Frequency Front-Ends (RFFEs) are at the forefront of the current developments to improve the performance of next-generation wireless RF systems. In the past ... -
Highly Miniaturized VHF Helical Filters with Fully Reconfigurable Capabilities
Arroyo Diaz, Eivy (2019-05-10)The demand for frequency reconfigurable bandpass and bandstop filters within the VHF-UHF frequencies continues to rise due to the increasingly crowded radio frequency (RF) spectrum. As a result, higher levels of isolation ... -
Information Theoretic Modeling of Antennas
Harrison, Bradlee (2024-05-10)Linear time-invariant (LTI) electrically small antennas (ESAs) have inherent limitations in their capabilities. Two significant limitations apply to LTI antennas: a lower bound on the antenna Q-factor, which causes a narrow ... -
Investigation of a Generalized Frequency Domain Method for Modeling Time-Varying Loads on Antennas
Palmer, Ashley (2019-12-13)Within traditional antenna design, the behavior of the antenna can be dictated by its physical dimensions and their proportions to a wavelength. Traditional electrically small antennas in particular face many limitations ... -
Predictive Tracking Simulation and Techniques for All-digital Radar
Pate, Savannah (2021-08-05)All-digital radar architectures allow radar systems to operate with more flexibility. Multiple Input, Multiple Output (MIMO) radars are especially effective at identifying multiple targets. Combined with statistical ... -
Quasi-Omnidirectional Broadband Anti-Reflective Surface of Multi-Level Sub-Wavelength Structures
Boydstun Jr, Barry Paul (2020-12-18)The demand to remove reflections from surfaces has been a topic of interest for many decades. Accordingly, many methods and techniques have been exploited to achieve the optimum design, which is to impart no reflections ... -
Reconfigurable filter design using liquid metal actuation
Pham, Alexander (2021-05-14)The emergence of technologies such as 5G, IoT, automotive radar, wireless power transfer, broadband satellite internet, and more has increased the number of devices operating and transmitting in the radio frequency (RF) ... -
SAR Image Formation via Subapertures and 2D Backprojection
Schone, Callin (2020-05-08)Radar imaging requires the use of wide bandwidth and a long coherent processing interval, resulting in range and Doppler migration throughout the observation period. This migration must be compensated in order to properly ... -
Signal Processing Techniques for Radar Cross Section Measurements Using Orthogonal Frequency-Division Multiplexing Waveforms
Glenn, Robert (2023-05-12)In recent work conducted at the University of Oklahoma’s Advanced Radar Research Center, it has been shown that using orthogonal frequency-division multiplexing (OFDM) offers a significant time reduction in taking wideband ...