Active Dual-Band Frequency Selective Surfaces with Close Band Spacing Based on Switchable Ring Slots

Autor:	Jose I. Martinez-Lopez, Alexander E. Martynyuk, Jorge Rodriguez-Cuevas, Henry Fabian-Gongora
Rok vydání:	2015
Předmět:	Materials science business.industry Frequency ratio PIN diode Resonance Condensed Matter Physics Ring (chemistry) Selective surface law.invention Optics law Insertion loss Optoelectronics Multi-band device Electrical and Electronic Engineering Waveguide simulator business
Zdroj:	IEEE Microwave and Wireless Components Letters. 25:606-608
ISSN:	1558-1764 1531-1309
DOI:	10.1109/lmwc.2015.2451358
Popis:	This letter presents active dual-band frequency selective surfaces (AFSS) with close band spacing based on two switchable ring slots loaded by PIN diode switches. The close band response is achieved by splitting the outer ring slot, and then shifting upward its fundamental resonance beyond the resonance of the inner ring slot. The proposed AFSS can provide four states of operation including lower single-band, upper single-band, dual-band with close band spacing, and reflective mode. Experimental results based on the waveguide simulator show that a frequency ratio of 1.14, with insertion loss lower than 0.82 dB at resonant frequencies, is obtained in the X-band.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::693081771ed8ba06b7a754864f4f3026 https://doi.org/10.1109/lmwc.2015.2451358 Zobrazit plný text záznamu