E-viri
Recenzirano
-
Xing, Jiaqi; Li, Da; Fan, Yudi; Zhang, Ling; Li, Er-Ping
IEEE transactions on antennas and propagation, 04/2024, Letnik: 72, Številka: 4Journal Article
In this paper, an amplitude and frequency tunable coherent perfect absorption (CPA) is presented using a varactor-embedded frequency selective surface (FSS)-based metamaterial absorber. The proposed structure mainly incorporates two dielectric layers, two metal-patterned layers equipped with varactors and resistors, and an intermediate metal cross layer for electrical connections. This coherent absorber is evaluated based on full-wave simulations. When a single electromagnetic wave is incident vertically from one side of the structure, two adjacent peaks are produced with absorption efficiencies of about 50%. The structure is then positioned in the standing wave field created by two counter-propagating coherent waves, where the two peak amplitudes can be selectively enhanced or weakened by adjusting the phase difference between the coherent waves. Moreover, by modulating the reverse voltage across the varactors, the capacitance of the varactors is altered, thereby enabling the tunability of the absorption frequency. Two coherent absorption peaks with phase differences of ϕ = 0° and ϕ = 180° are deliberately designed to be significantly enhanced within distinct frequency ranges. As a result, a CPA with a wide tunable frequency range within 2.3-6.6 GHz is synthesized, where the absorption rates of 2.3-3.8 GHz and 4.25-6.59 GHz exceed 90%. To substantiate the soundness of our theory and design, an equivalent circuit model is constructed, and experimental measurements are also carried out. All the results agree well with each other.
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.