Design of metamaterial based broadband radar absorbers for stealth applications

Project Title

Design of metamaterial based broadband radar absorbers for stealth applications

Project Area of Specialization Electrical/Electronic EngineeringProject Summary

Metamaterial-based absorber has gained the attention of the electromagnetic communities due to their wideband and tunability. The present invention discloses a metamaterial-based broadband radar absorber for stealth applications operating from 4 GHz to 18 GHz with more than 80% absorptivity. The present absorber is polarization-insensitive and shows large angular stability from 0º to 55º. The metamaterial-based broadband radar absorber structure, according to the present invention, is simple in structure and easy to process with a thickness less than one-sixth of the working wavelength, and greatly reduces size and costs. Using Chip resistors in the unit cell has enhanced the bandwidth by energy dissipation through resistors compared with the reported absorber. The proposed absorber is novel and would be useful for the stealth applications

Project Objectives

We have the objectives as follows:

1. To achieve wideband absorption using single layer meta-surface to make a simple structure;
2. To use the proposed wideband absorber for radar absorption which is useful for stealth applications;
3. To patent the present invention

Project Implementation Method

CST microwave studio software is used for the simulation of the unit cell. After getting the proposed results from simulation, we will fabricate a prototype of the absorber. For the fabrication of the prototype, we will use CNC Milling Machine. Chip resistors are also used in the prototype for the purpose of power dissipation, which plays an important role in absorption. For the soldering of resistors, we will use soldering station “Kada 850”.

Benefits of the Project

The benefits of metamaterial-based radar absorbers to the society are:

1. Wider adaptability
2. Defense
3. Stealth technology
4. Fighter jets
5. Microwave filters
6. Wireless communication

Technical Details of Final Deliverable

1. Metamaterial absorber prototype:

The prototype of metamaterial absorber sheet comprised of subwavelength sized unit cells.

1. MATLAB code:

MATLAB code for the graphical description of simulation data from CST microwave studio and experimental data of the prototype.

Final Deliverable of the Project Hardware SystemCore Industry ManufacturingOther IndustriesCore Technology Wearables and ImplantablesOther TechnologiesSustainable Development Goals Good Health and Well-Being for People, Industry, Innovation and Infrastructure, Responsible Consumption and Production, Peace and Justice Strong Institutions, Partnerships to achieve the GoalRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	79350
Prototype Fabrication	Equipment	3	15000	45000
FR-4 Substrate	Equipment	6	2500	15000
Chip Resistors	Equipment	700	5	3500
Soldering Station Kada 850	Equipment	1	6500	6500
Printing	Miscellaneous	7	250	1750
Registers	Miscellaneous	4	50	200
Clipboard	Miscellaneous	2	150	300
Ball pens	Miscellaneous	10	10	100
Bus Fair	Miscellaneous	1	7000	7000