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A Polarization Independent Quasi-TEM Metamaterial Absorber for X and Ku Band Sensing Applications
摘要： In this paper, a dual-band metamaterial absorber (MMA) ring with a mirror reflexed C-shape is introduced for X and Ku band sensing applications. The proposed metamaterial consists of two square ring resonators and a mirror reflexed C-shape, which reveals two distinctive absorption bands in the electromagnetic wave spectrum. The mechanism of the two-band absorber particularly demonstrates two resonance frequencies and absorption was analyzed using a quasi-TEM field distribution. The absorption can be tunable by changing the size of the metallic ring in the frequency spectrum. Design and analysis of the proposed meta-absorber was performed using the finite-integration technique (FIT)-based CST microwave studio simulation software. Two specific absorption peaks value of 99.6% and 99.14% are achieved at 13.78 GHz and 15.3 GHz, respectively. The absorption results have been measured and compared with computational results. The proposed dual-band absorber has potential applications in sensing techniques for satellite communication and radar systems.
关键词： X band,sensing,quasi-TEM,absorber,metamaterial,dual-band
更新于2025-09-23 15:21:21
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Inset-fed rectangular MICROSTRIP patch antenna bandwidth enhancement
摘要： Bandwidth enhancement of the traditional inset-fed rectangular microstrip patch antenna is numerically analyzed using degraded ground plane technique. Input impedance calculation based on the electromagnetic theory in traveling-wave in conjunction with field distribution in quasi-TEM mode approximation is carried out. Radiated electric field properties are performed using Ampere’s law of the magneto-static. Some antenna performances such as ?10 dB return loss bandwidth of 36.7%, beam-width of about 94(cid:1), and stable gain of 3.4 dB have been achieved.
关键词： degraded GND inset-patch,traditional inset-patch,return loss,quasi-TEM mode,radiation pattern
更新于2025-09-23 15:21:01