Direction Finding System using Circular Array of Log-Periodic Antennas and Leaky-Wave Structures******

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Advanced antenna systems as the Electromagnetic Wave Sensors are the critical front-end components in demanding Electronic Warfare (EW)/Intelligence, Surveillance and Reconnaissance (ISR) applications. Both omni-directional signal coverage and directional antenna performance is important for Electronic Intelligence (ELINT) and Communication Intelligence (COMINT) applications including, Electronic Surveillance (ES), Direction Finding (DF), Communications (COMMS) and Electronic Attack (EA). Typical systems consist of sophisticated antenna front-ends followed by software processing unit. D-TA Systems Inc. in Ottawa offers open-architecture solutions and state-of-the-art sensor-interface products with on-board multi-core software processing units. The goal of this project is to devise, design and demonstrate front-end antenna systems**operating within 0.5 GHz - 18 GHz frequency band for several applications including DF, with both omni-directional (360 degree coverage) and directional radiation properties, in lowest weight and smallest size possible. Two approaches based on Log-Periodic Antenna Arrays and Leaky-Wave Antenna has been proposed, for achieving wide variety of radiation characteristics required in ELINT and COMINT applications. The proposed project focusses on enhancing the capabilities of D-TA in building advanced Signal Intelligence (SIGINT) systems completely within Canada without relying on external antenna vendors. This project is thus expected to help establish D-TA's dominance in EW sector, and retain the developed technological know-how inside Canada for an important strategic sector like national defense.**