Metamaterial-based-absorber to improve the performance of S and X band radar systems

• We present a metamaterial-based dual band microwave-absorber for radar applications, the structure of which consists of an array of closed ring resonators on a low profile substrate. Simulations show high absorption (absorptance > 90%) at dual frequencies i.e. 3 GHz and 9 GHz. The proposed absorber is insensitive to polarization (i.e., absorptance taking into account both co- and cross-polarization of reflected waves). Further, we show how the microwave absorber can be used to improve the performance of a radar system for short range applications, when positioned between the transmit and receive antennas. The error in estimated target distance is reduced and clutter reduction is improved.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

Radar antennas

Absorption

Radar applications

Metamaterials

Impedance

Crosstalk

microwave absorber

dual-band absorber

metamaterial absorber

co- and cross-polarization absorber

crosstalk reduction

Intelligent industri

Intelligent Industry

Publication and Content Type

ref (subject category)

kon (subject category)