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Patent Searching and Data


Title:
RELAY DEVICE AND EXTERNAL ANTENNA UNIT
Document Type and Number:
Japanese Patent JP2008236407
Kind Code:
A
Abstract:

To provide a compact, low-cost and easy-manufacturable relay device which relays a wireless WAN system and a wireless LAN system, and to provide an external antenna unit.

In a communication system, the relay device has a first antenna unit which transmits and receives wireless signals in a first frequency band; a second antenna unit which transmits and receives wireless signals in a second frequency band; a first signal processing board which performs wireless communication via the first antenna unit; a second signal processing board which performs wireless communication via the second antenna unit; and a connector which connects the first and the second signal processing boards and relays wireless signals in the first and the second frequency bands. The second antenna unit has an antenna element that receives wireless signals in the second frequency band, and a filter which controls interference signals in a specified frequency band which are included in the wireless signals. The second antenna unit is provided removably from the second signal processing board.


Inventors:
MAKITA SOKEN
IKEBE HAYATO
Application Number:
JP2007073516A
Publication Date:
October 02, 2008
Filing Date:
March 20, 2007
Export Citation:
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Assignee:
SANYO ELECTRIC CO
International Classes:
H04B7/15; H04B1/38; H04B1/3822; H04B7/26; H04W16/26; H04W76/02; H04W84/12; H04W88/00
Attorney, Agent or Firm:
Ichitaro Ito
Keishin Terayama
Hiroyuki Miyoshi