Title:
コンテナを識別するための装置
Document Type and Number:
Japanese Patent JP4388725
Kind Code:
B2
Abstract:
A wireless communication device and method for identifying a container, or communication information about a container, using a slot in the container as an antenna. The device includes a wireless communication device for transmitting information regarding the container. The container includes an outer wall forming a rim and a slot between the rim edge and the outer wall that is circular and continues without boundaries. The wireless communication device is coupled to the slot to provide the slot antenna for communications. An impedance matching network is additionally provided to make the operating frequency of the slot substantially the same as the operating frequency of the wireless communication device. Alternatively, shorting posts may be placed in the slot to define boundaries of the slot to match the operating frequency of the slot to the operating frequency of the antenna. Variable impedance matching is provided between the wireless communication device and the slot.
Inventors:
Foster Ian James
Horel peter robert george
Horel peter robert george
Application Number:
JP2001571318A
Publication Date:
December 24, 2009
Filing Date:
March 23, 2001
Export Citation:
Assignee:
Marconi Corporation Public Limited Company
International Classes:
B65G63/00; H01Q13/10; B65D25/20; G06K19/077; H01Q1/22; H01Q1/44
Domestic Patent References:
| JP10511486A | ||||
| JP10145126A | ||||
| JP63042203A |
Attorney, Agent or Firm:
Minoru Nakamura
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda
Fumiaki Otsuka
Sadao Kumakura
Shishido Kaichi
Hideto Takeuchi
Toshio Imajo
Nobuo Ogawa
Village shrine Atsuo
Takaki Nishijima
Atsushi Hakoda