Efficient HF Transmit Antennas Utilizing Platform Coupling and Reconfigurable Aperture

Period of Performance: 01/29/2014 - 07/28/2015


Phase 2 STTR

Recipient Firm

Virtual EM, Inc.
3055 Plymouth Rd, Ste 200
Ann Arbor, MI 48105
Principal Investigator, Firm POC

Research Institution

Michigan State University
Office of Sponsored Programs
East Lansing, MI 48824
Institution POC


Virtual EM is proposing a solution for achieving electrically small high-efficiency VHF transmit antennas suitable for use on medium size Unmanned Aerial Vehicles (UAVs). In the proposed approach, maximum use of the UAV s airframe for the antenna improves radiation efficiency while dynamic reconfiguration of the antenna aperture provides frequency tuning and hence lower noise floor. Feasibility has been demonstrated via simulations and limited prototyping in Phase I, and a fully functional prototype on a flight-worthy UAV will be built in Phase II.