Design of a Novel Double Negative Metamaterial Absorber Atom for Ku and K Band Applications

Abstract

This paper presents a multiband metamaterial (MM) absorber based on a novel spiral resonator with continuous, dual, and opposite P-shape. The full wave analysis shows 80.06% to 99.95% absorption at frequencies range for Ku and K bands for several substrate materials of 100 mm2 area. The results indicate that the absorption rate remains similar for different polarizing angles in TEM mode with different substrates. With FR4 (Flame Retardant 4) substrate and 64 mm2 ground plane, the design acts as single negative (SNG) MM absorber in K band resonance frequencies (19.75–21.37 GHz) and acts as double negative (DNG) absorber in Ku band resonance frequencies (15.28–17.07 GHz). However, for Rogers 3035 substrate and 36 mm2 ground plane, it acts as an SNG absorber for Ku band resonance frequency 14.64 GHz with 83.25% absorption and as a DNG absorber for K band frequencies (18.24–16.15 GHz) with 83.69% to 94.43% absorption. With Rogers 4300 substrate and 36 mm2 ground plane, it acts as an SNG absorber for Ku band at 15.04 GHz with 89.77% absorption and as DNG absorber for K band frequencies (22.17–26.88 GHz) with 92.87% to 93.72% absorption. The design was fabricated with all three substrates and showed quite similar results as simulation. In comparison with other broadband absorbers, this proposed MM absorber illustrated broad incidence angles in TEM mode.

Penta Band Single Negative Meta-Atom Absorber designed on Square Enclosed Star-Shaped Modified Split Ring Resonator for S-, C-, X- and Ku- Bands Microwave Applications

“…From references [13], [17], [20], [21], [22], and [28] we can realize that the dimension of this MMA unit cell is high, the number of resonance frequency, EMR, and cover bands are low, so our proposed MAA unit cell performance is better than the references [13], [17], [20], [21], [22], and [28]. Though the MMA unit cell dimension of references [25], [26] are small compared to the proposed MAA unit cell, the number of resonances, EMR, and frequency bands are low than the designed cell, so the suggested MAA unit cell performance is good quality than references [25], [26]. Since the references [15], [20] are equal to our fabricated MAA unit cell, but the other parameters, such as EMR, are low, and the covering band is low.…”

“…In recent times, one MMA is demonstrated for two bands application X-, and Ku-bands in [24], the absorption peaks can be seen 94.63% at 11.31 GHz, 95.58% at14.11 GHz, 97% at 14.23 GHz, and 75.58% at 17.79 GHz. A novel DNG MMA presented in [25], this paper shows the Ku-and K-bands absorption. The highest absorption peak shows of 93.72% at the Ku-band and 94.43% at the K-band for the satellite communication.…”

“…The designed MAA unit cell provides high EMR, high quality factor and maximum absorption bands, moreover its size is small compared with many published works [13], [15], [17], [20], [21], [22], [24], [25], [26], and [28]. In order to explain these innovations, this article offers a complete analysis of meta-atom properties of the formed absorber, accompanied by a study of surface current, E and H fields.…”

Special Issue on “Advanced Technology Related to Radar Signal, Imaging, and Radar Cross-Section Measurement”

“…After a very careful peer-review process, a total of 32 papers were accepted. These works include SAR/ISAR [2][3][4][5][6][7][8][9], polarimetry [10][11][12], MIMO [13,14], direction of arrival (DOA)/direction of departure (DOD) [13][14][15], sparse sensing [5,14,16], ground-penetrating radar (GPR) [17][18][19], through-wall radar [20,21], coherent integration [22,23], clutter suppression [24,25], and meta-materials, among others [26][27][28][29][30][31]. All of these accepted papers are the latest research results and are expected to be further advanced, applied, and diverted.…”

Modified-Segmented Split-Ring Based Polarization and Angle-Insensitive Multi-Band Metamaterial Absorber for X, Ku and K Band Applications

“…Though the developed substrates are unique, they are hard to fabricate commercially and handy for installing in EM wave appliances. Hence commercially available substrates (like FR4, Rogers RT, or RO) are being used in recent times for their universal applicability and availability [13][14][15].…”