I presented three papers at the IEEE Radio and Wireless Conference in Phoenix January 17-18, 2017. This is an international conference and draws participants from around the world including Europe and Asia. The conference consists of five related conferences that focus on the intersection between wireless communication theory, systems, circuits, and device technologies. This creates a unique forum for engineers to discuss various technologies for state-of-art wireless systems and their end-use applications. The papers I presented there will be archived on the IEEE Xplore website.
Paper 1: Systems Engineering Of Digitally Beam Formed Electronically Scanned Phased Arrays for Terabit per Second Satellites
ABSTRACT: The top level systems engineering of a digitally beam formed phased array for high throughput satellites is described. The focus of this work is on demonstrating that a viable concept exists by partitioning the system and showing a technology path for the subsystems. The system design is supported by trade studies which justify technology choices. Also, applicable industry standards for digital interfaces and communication are shown. Phased arrays offer distinct advantages over fixed beam antennas such as the ability to dynamically reconfigure antenna beam patterns as user needs change over time. A system level analysis is performed which shows how each subsystem will meet customer needs. The result of this work demonstrates that digitally beam formed arrays should be taken seriously as a technology alternative for high throughput terabit per second satellite systems.
Paper 2: System Latency Performance of Mechanical and Electronic Scanned Antennas for LEO Ground Stations for IoT and Internet Access
ABSTRACT: There are at least two choices for the gateway ground station antenna scanning function for low earth orbit (LEO) satellite constellations: mechanical or electronic scanning. This article is a comparison of these two options for the system parameter of latency. Since LEO satellites move across the sky from horizon to horizon simple fixed position ground antennas cannot be used for high data channels. Rather, the ground station must scan its antenna from satellite to satellite as they move into and out of the access range of the ground station. Mechanical scanning antennas physically rotate the antenna in two directions. Electronic scanning uses a fixed position antenna and steers the antenna beam electronically to remain pointed at the satellite. This work analyzes the scanning rate of the mechanical and electronic steered antennas. Since latency is a primary concern for real time internet of things (IoT) devices and internet access, it is used as the performance metric. The results show that mechanical scanning antennas increase the overall system latency due to the slew time required to reposition the antenna from one satellite to the other. This work concludes with a summary of the analysis and recommendations for additional analysis.
This is me with my friend Charlie Jackson at the poster session presentation for my Paper 3.
This is me describing my research to a visitor to my poster paper.
Paper 3: Dielectric Notch Radiator Antennas with Integrated Filtering For 5G and IoT Access
(This was a poster presentation paper and you can see me in the image above at the poster session.)
ABSTRACT: The development of dielectric notch radiator (DNR) antennas is described with integrated filters for 5G and IoT systems. The DNR is a type of tapered slot antenna (TSA) and is similar to the familiar Vivaldi antenna except that the length of the DNR is much shorter than a Vivaldi. The five step design process for the DNR is given and expands upon prior exponential taper design methods. The optimization and analysis of the microstrip to slot line section uses the finite element method (FEM). The DNR is used for a X-band antenna and line array. The single element simulated and measured return loss and antenna gain pattern are shown. The gain pattern for a four element line array is shown. The DNR is then used for an antenna system operating in the mobile phone and Wi-Fi bands. The antenna is integrated with filters to form a solution with application to 5G and internet of things (IoT) over Zigbee or Wi-Fi systems. The results demonstrate how the DNR antenna can be applied to solve wide band antenna design requirements where antenna length is an important design constraint.
If you want to know more about dielectric notch radiator antennas, you can read my post about them.