Flexible Substrate Antennas

摘要: Flexible electronics can currently be considered a wellestablished technology that has reached certain degree of maturity in meeting the requirements tightly assembled electronic packages, providing reliable electrical connections where assembly is required to flex during its normal use or board thickness, weight, space constraints are driving factors. In this context, flexible substrate antennas (FSAs) play key role integration and packaging wireless communication devices sensor networks. Those antennas, which designed such resonant peak frequency remains unaffected after bending, stretching, twisting, being embedded into materials as textile fabrics, bandages, stickers, bendable displays. FSAs rapidly emerging popular choice for radio identification (RFID) tags, multisystem gadgets, wearable computer systems, smart clothing spurring new applications sensing monitoring civil construction, health care supervision, search rescue satellite systems. The introduction design concepts, fabrication processes adding momentum interest development consumer electronics. Researchers continuingly relying on antenna solve problems efficiency, reliability, cost, shape, reproducibility. There also need using environmentally friendly lowcost production processes, order allow easy disposal massive number those devices. This special issue aims at reflecting current research trends approaches FSAs, collecting 13 peer-reviewed articles (with an acceptance ratio 52%) reporting original coming from 46 authors 19 institutions 14 countries. Authors used variety silver nanoparticle ink printed Kapton polyimide film, ceramic-polymer carbon-epoxy composites, conductive polymers PEDOT PPy, metamaterialbased artificial magnetic conductor structures, copperplated nylon fabric acts electrotextile material. They addressed technologies located different bands, including near field communications (13,56MHz), UHF RFID tag (860MHz), global navigation systems (L2 band 1.227GHz L1 1.575GHz), L-band DVB-H (1452–1492MHz), GSM1800 (1710–1880MHz), PCS1900 (1859–1990MHz), UMTS (1900–2170MHz), local area networks WiFi WiMAX (2.4-, 3.6-, 5-GHz), Bluetooth (2.4GHz), ultra-wideband (3.1 10.6GHz), even scientific Ku-band (12–18GHz). diversity reflects lively experiencing, corroborated by publications topic shown Figure 1.