Full Duplex Antenna Study
Abstract
Full duplex or simultaneous transmit and receive (STAR) operation without time, frequency, polarization, beam, or space multiplexing is of great interest for modern communication networks and electronic warfare (EW) systems. This operation enables higher system throughput (theoretically doubled) and allows for efficient frequency spectrum utilization. EW systems with full duplex capability can continuously, without any interruptions, perform electronic attack and electronic support missions using the same antenna sub-system. Yet, the realization of full duplex systems is quite challenging due to self-interference between the collocated transmitter and receiver. To achieve required isolation, multi-layer self-interference cancelation approaches based on minimizing coupling in the antenna, RF, baseband, and digital domains are needed. Therefore, providing a high isolation in the antenna layer helps mitigate the overall complexity of the STAR transceiver. University of Colorado Boulder, specifically the Antenna Research Group (ARG), proposes to conduct a study on antenna technologies that may lead to the development of entirely passive full duplex antenna systems. Three fundamental challenges that are not fully understood when the antennas are considered for STAR shall be investigated and tied to the specific army needs. Specifically, these are: 1. Self-interference physics associated with medium/high gain reflector antennas of interest for tactical microwave point-to-point and point-to-multipoint radio links 2. STAR with electrically small antenna (ESA) systems of interest for handheld radio platforms operating over multiple bands 3. Effects of unmanned aerial system (UAS) platforms on increased coupling in monostatic and bistatic STAR antenna systems. The proposed program shall have strong emphasis on antenna configurations and studies that may enable full duplex functionality without multiplexing in time, frequency, polarization, beam direction, and space (so called gold-STAR). Narrow and wide instantaneous bandwidth topologies and techniques that address additional cancellation of the self-interference shall also be researched. The research methodology shall include literature overview, development of baseline STAR configuration for each of the considered systems, computational feasibility study for each considered STAR approach and specific system, and theoretical validation of all obtained results.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2018
- Source ID
- W911NF1710228
Entities
People
- Dejan S. Filipovic
Organizations
- Army Contracting Command
- United States Army
- University of Colorado Boulder