作者: Yuki Ito
DOI:
关键词: Wireless 、 State (computer science) 、 Printed circuit board 、 Electronic engineering 、 Antenna (radio) 、 Engineering 、 Electrical engineering
摘要: In a wireless IC device, an insulating material, which has electrical characteristic that is varied with change in environmental state, provided between feed circuit board and antenna to detect the state from of communication device external reader apparatus.