Screen Printed Polarization Independent Microwave Absorber for Wideband RCS Reduction

Dhumal, Ayushi; Bisht, Mahesh Singh; Bhardwaj, Abhinav; Saikia, Mondeep; Malik, Sudha; Srivastava, Kumar Vaibhav

doi:10.1109/temc.2022.3213941

Cited by 31 publications

(5 citation statements)

References 43 publications

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“…The dielectric properties of the PLA for the numerical simulation are based on earlier reported work. 31 The objective of this work is to design a FSS on a 3D-printed substrate. The PLA substrate is fabricated using the FFF technique (FLASHFORGE).…”

Section: Fabrication and Measurement Setupmentioning

confidence: 99%

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Comparative analysis of X‐band FSS fabricated by inkjet printing and conventional etching technique

Inbarani,

Manikandan

2024

Micro & Optical Tech Letters

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An investigation of a single‐layer band‐stop frequency selective surface (FSS) is designed and analyzed for X‐band application. The proposed FSS design primarily involves a cross‐shaped conductive patch with four square slots on each corner, and it is fabricated on the 3D‐printed polylactic acid (PLA) substrate. The design is resonating at 12 GHz with an insertion loss greater than 60 dB. The 10 dB bandwidth of the designed structure is 8.3% with respect to the resonant frequency. The results show that the design has polarization‐independent and angle‐insensitive transmission characteristics for incidence angles up to 60°. The simulation is carried out using CST Microwave Studio Suite, and the results are obtained. The physical mechanism of the designed structure is evaluated using the surface current distribution. The designed FSS is fabricated using two techniques, namely inkjet printing and conventional etching. Finally, the measurements of the fabricated structure are done using a vector network analyzer setup.

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Section: Fabrication and Measurement Setupmentioning

confidence: 99%

“…Currently, 3‐D printable PLA is the material utilized for a honeycomb substrate. The dielectric properties of the PLA for the numerical simulation are based on earlier reported work 31 . The objective of this work is to design a FSS on a 3D‐printed substrate.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of X‐band FSS fabricated by inkjet printing and conventional etching technique

Inbarani,

Manikandan

2024

Micro & Optical Tech Letters

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“…In [9], the spatial lossy transmission line was proposed to realize a wide absorption band while maintaining a large oblique incident angle stability. The inkbased resistive layer was used in [10] to cope with the wideband RCS reduction under a planar structure. In [11], polycarbonate substrate was coated with gold films for the broadband absorber with optical transparency.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Design of 3-D Microwave Absorber With 70° Angular Stability for C-Band and X-Band

Feng,

Zhu,

2024

IEEE Open J. Antennas Propag.

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This article presents the synthesis and design of 3-D microwave absorber with 70° angular stability for C-band and X-band. The operating principle is firstly investigated, where the absorber is considered as an energy convertor. With the help of our proposed universal equivalent transmission line (TL) model, the absorptive performance can be accordingly synthesized. Then, a design method for efficient absorption under large angles is presented. By selecting a proper synthesized angle (SA), the angular stability can be effectively improved. After that, the prototype with 70° angular stability is designed as an example with structural realization and practical implementation. Measurements agree well with synthesized and simulated results, successfully verifying the proposed design method. For specific C-band and X-band applications, the measured average absorption ratios (ARs) under normal incidence, 45° incidence, and 70° incidence are 94.2%, 94.0%, and 92.3%. Minimum measured ARs within the operating bandwidth are 88.4%, 81.5%, and 82.0% for normal, 45°, and 70° incidences. Besides, the proposed absorber element owns the advantage of simple structure with only one resistor. Such a class of microwave absorber is a potential candidate for wide coverage electromagnetic absorption.INDEX TERMS 3-D microwave absorber, angular stability, synthesis and design, universal equivalent transmission line model.

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“…The Circuit Analogue Absorber (CAA) offers a practical solution for achieving high absorption bandwidths by carefully choosing the appropriate lumped equivalent resistance. While resistive sheet patterning 9 can be costly, resistant ink 10 provides a more affordable alternative. It can be conveniently applied to a substrate using a low‐cost screen printing technique.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin wideband low profile circuit analog metamaterial absorber

Murali Naik,

Singh,

Rama Krishna

2024

Micro & Optical Tech Letters

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In this paper, a low profile polarization insensitive ultrathin Circuit Analogue Absorber is presented for wideband absorption, encompassing the entire X‐band and Ku‐band applications achieving stable angular performance up to 45° angle of incidence in TE and TM polarized configurations. The absorber design being proposed consists of a multislotted square loop resonator loaded with lumped resistors, accompanied inside by a quadruple‐split annular copper ring. These components are arranged in a stacked configuration, with a grounded dielectric substrate serving as the base and an air spacer between the substrate and ground displaying absorptivity above 90% from 8.19 to 22.20 GHz with a 14.01 GHz and 92.2% of actual and fractional bandwidth respectively under the normal incidence. The thickness of designed wideband absorber is 0.0819(is the wavelength corresponding to the lowest operating frequency) making absorber Low profile and Ultrathin.

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Screen Printed Polarization Independent Microwave Absorber for Wideband RCS Reduction

Cited by 31 publications

References 43 publications

Comparative analysis of X‐band FSS fabricated by inkjet printing and conventional etching technique

Comparative analysis of X‐band FSS fabricated by inkjet printing and conventional etching technique

Synthesis and Design of 3-D Microwave Absorber With 70° Angular Stability for C-Band and X-Band

Ultrathin wideband low profile circuit analog metamaterial absorber

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