HF-VLF Antenna Matrix for Under Water Platforms

Project Description

To design and develop a HF-VLF antenna matrix and pre-processing circuit located inside radio room of the Under Water Platform. Electronic circuit for RF reception in VLF range to act as redundant system for VLF loop antenna of the Under Water Platform.



Clarifications on EOI Document -

Question: Will the system need to be housed in a protected housing that would be exposed to a specified pressure or not? 
Answer: HF-VLF matrix is located inside radio room which is located inside pressure hull. So no pressure protection housing is required for the matrix.
Question: Is the unit required to meet 'harsh underwater platform conditions' to comply to EMI/EMC?
Answer: Harsh conditions in terms of EMI/ EMC inside platform means radio room inside has large number of radio equipment both transmitters and receivers in a dense arrangement. Therefore the EMI/ EMC standards of the equipment need to be of appropriate standards.
Question: Do applicants need to strictly stick to the block diagram provided in the document? 
Answer: Block diagram (BD) given is symbolic and applicants are free to develop their own circuitry to meet the requirements projected.
For further clarifications on this project, you may write to dsmaq[at] with dir.tdf-drdo[at] and tdf[at] kept in cc. 


Please to access project documents.

Project Awarded To


Company Profile :
Verdant Telemetry and Antenna Systems Pvt. Ltd has been a leading solution provider for antennas and systems in the Aerospace & Defence industry for more than 20 years. The company’s capabilities include design, development, validation and manufacture of antennas and systems for airborne, ship borne and terrestrial applications. Verdant’s Quality Management System [QMS] is AS9100 (Rev D) & ISO 9001: 2015 certified. Verdant is a CEMILAC approved design centre for airborne antennas and Systems. Verdant offers a wide range of airborne antennas that are used with communication and navigation radio systems. The products are being used on supersonic & subsonic aircraft platforms including jet aircraft, propeller aircraft, rotor-wing aircraft and Unmanned Aerial Vehicles (UAVs). This range offers products that operate within the frequency range of HF-Ka Band, in various customisable configurations including blade antennas, flush mount antennas, conformal antennas, etc. Our innovative p